Denver CO North Metro Area Landlord Guide 2026 Colorado HB 21-1117 (April 2021) repealed the statewide rent control preemption — but NO north Denver metro city has enacted any local ordinance. The critical issue here isn’t rent caps: it’s the Adams County courthouse paradox (Commerce City, Adams County’s largest city, has NO courthouse — all evictions file 18–22 miles away in Brighton), the Westminster Adams/Jefferson county split (wrong courthouse = case dismissed), and the Suncor refinery’s dual pricing effect on Commerce City rental markets. CRS §38-12: no deposit cap; 60-day return (30 days with written demand); 3× willful wrongful withholding + attorney fees. HB 21-1121: 10-day pay-or-quit (genuine cure right — not a vacate-only notice). SB 21-173: 21-day notice for month-to-month termination (10-day notices are now defective).

1. Colorado HB 21-1117 — No Rent Control Anywhere in the North Metro

Colorado’s history with rent control has two distinct eras, and understanding both is essential context for any investor in the north Denver metro corridor.

From 1994 to 2021, Colorado Revised Statutes §38-12-301 — enacted by voters as Proposition 10 in 1994 — prohibited every Colorado city and county from enacting any local rent control ordinance. This statewide preemption was one of the broadest in the United States.

In April 2021, Governor Jared Polis signed Colorado House Bill 21-1117, which repealed §38-12-301 and returned local authority to Colorado municipalities to enact rent stabilization for the first time since 1994. Colorado SB 23-184 (2023) subsequently modified the preemption framework further, removing some remaining barriers to local rent ordinances.

Despite having had this authority since 2021 — more than five years as of 2026 — NO Colorado city or county has enacted any local rent stabilization ordinance, rent increase guideline, rent board, or rent control measure of any kind. This holds for every community in the north Denver metro corridor: Brighton, Northglenn, Commerce City, Westminster, and Thornton have each declined to act. Adams County and Jefferson County have not acted at the county level.

The TABOR Barrier

Colorado’s Taxpayer’s Bill of Rights (TABOR), Article X, Section 20 of the Colorado Constitution, adds an additional layer of complexity to any potential future rent ordinance. Any rent program that requires landlord registration fees, enforcement administration charges, or any mandatory government charge that could be characterized as a tax may require citywide voter approval before it can be collected. This constitutional requirement has been cited by city attorneys in Denver and several Front Range cities as a practical obstacle to implementing a self-funding rent program without a ballot measure. For north metro investors, the practical implication is straightforward: no rent regulation exists, and enacting one faces significant legal and political hurdles.

Boulder: The Closest Active Discussion

The closest Colorado community to an active rent ordinance is the City of Boulder, which has enacted a Rental Housing License program and a Just Cause Eviction ordinance — but even Boulder has not enacted a rent cap or rent stabilization program. Boulder’s ordinances affect eviction procedures rather than rent levels. Denver has also had repeated Council discussions about rent stabilization but has not passed binding measures. No Adams County city is in this discussion at all.

For Brighton, Northglenn, Commerce City, Westminster, and Thornton landlords: rent increases may be applied by any amount at lease expiration, or with the appropriate advance notice period (21 days for month-to-month since SB 21-173, effective 2022) for mid-tenancy increases. No government notification, filing, approval, or cap applies.

2. The Adams County Courthouse Paradox — Brighton, Commerce City, Northglenn, Thornton

The single most important compliance fact for landlords investing in Adams County communities — particularly Commerce City and Northglenn — is the location of the Adams County Combined Court: 1100 Judicial Center Dr, Brighton CO 80601.

Why Brighton Is the County Seat

Brighton, Colorado (~43,000–47,000 population) is the seat of Adams County government. The Adams County Combined Court, Adams County Assessor, Adams County Clerk and Recorder, Adams County Health Department, and most county administrative functions are located in Brighton or in the Brighton area (some at 4430 S. Adams County Pkwy, the Administrative Services Center). Brighton has held county seat status since Adams County was formed in 1902.

The Commerce City Paradox

Commerce City (~63,000–67,000 population) is the largest city in Adams County by population — significantly larger than Brighton itself. Yet Commerce City has no courthouse. Every residential Forcible Entry and Detainer (FED) eviction action for a Commerce City property, every deposit dispute filed in small claims court, every civil matter involving a Commerce City address in Adams County must be filed at the Adams County Combined Court in Brighton, approximately 18–22 miles northeast of central Commerce City via I-270 East / I-76 East to US-85 North.

This routinely surprises out-of-state investors who purchase Commerce City rental properties under the assumption that a city of 65,000+ would have its own courthouse. It does not. Commerce City landlords travel to Brighton for every appearance.

Northglenn and Thornton

Northglenn (~42,000–45,000 population) and Thornton (~140,000 population; the 6th largest city in Colorado) are both entirely within Adams County. Both use the Adams County Combined Court in Brighton:

• Northglenn → Brighton: approximately 20 miles northeast via I-25 N / I-76 E / US-85 N
• Thornton → Brighton: approximately 18–22 miles north via I-25 N to US-85 N or via SH-7 E

Brighton’s Unique Advantage

Brighton landlords file evictions at the same courthouse: Adams County Combined Court, 1100 Judicial Center Dr, Brighton CO 80601. The difference is that for Brighton landlords, the courthouse is in their own city — no long drive, no additional logistics. Every FED filing, every hearing, every writ of restitution is processed at a courthouse within Brighton city limits. This is a genuine landlord advantage in Brighton that is not available in any other Adams County city.

Adams County FED Process

For any Adams County property (Brighton, Northglenn, Commerce City, Thornton, east Westminster):

1. Serve the written 10-day Demand for Payment or Possession (CRS §13-40-104(1)(d); HB 21-1121). The tenant has a genuine right to cure by paying all past-due rent in full within 10 days.
2. If tenant does not cure: file FED complaint at Adams County Combined Court, 1100 Judicial Center Dr, Brighton CO 80601.
3. Court schedules hearing, typically 7–14 days after filing. Summons is served on the tenant by the Adams County Sheriff.
4. Hearing is held at Brighton. If judgment for possession is entered, landlord receives a Writ of Restitution.
5. Adams County Sheriff executes lockout within 48 hours of writ issuance.

Total uncontested timeline: approximately 3–5 weeks from notice service to lockout. Contested cases (tenant appears, files defenses, seeks continuances) can extend to 2–3 months.

3. The Westminster Adams/Jefferson County Split — Critical Filing Trap

Westminster, Colorado (~115,000 population) is unique among north Denver metro cities in that it straddles the boundary between Adams County and Jefferson County. For eviction purposes, filing in the wrong county means the court lacks jurisdiction and will dismiss the case — forcing the landlord to start over with a new filing in the correct county.

Where Is the County Line?

The Adams/Jefferson county line runs roughly north-south through Westminster, approximately following Sheridan Blvd or Wadsworth Blvd in the southern portions and US-36 in the northern portions. East Westminster (including the Westminster Station RTD area, Federal Heights border, and the US-36/Federal Blvd commercial corridor) is in Adams County. West Westminster (including Standley Lake, Legacy Ridge, Bradburn Village, and most of Westminster’s newer residential development west of Wadsworth/Sheridan) is in Jefferson County.

The Two Courthouses

• Adams County Westminster (east) → Adams County Combined Court, 1100 Judicial Center Dr, Brighton CO 80601 (approximately 18 miles northeast)
• Jefferson County Westminster (west) → Jefferson County Combined Court, 100 Jefferson County Pkwy, Golden CO 80401 (approximately 11 miles south)

Note that for west Westminster (Jefferson County), Golden is actually closer than Brighton — so west Westminster landlords travel 11 miles south rather than 18 miles northeast.

How to Determine Which County a Westminster Property Is In

Do NOT rely on ZIP codes alone. Several Westminster ZIP codes straddle the county line. The authoritative method:

1. Search the property address at the Adams County Assessor (assessor.adcogov.org) or Adams County Property Search. If the property appears, it is in Adams County.
2. Search the property at the Jefferson County Property Search (jeffco.us/property). If it appears there, it is in Jefferson County.
3. For any property directly on or near Wadsworth/Sheridan, verify by parcel number — do not guess from street side alone.

Maxar and Lumen Are Jefferson County Westminsters

Westminster’s two largest private employers — Maxar Technologies (~2,000+ engineers at ~1300 W. 120th Ave) and Lumen Technologies / Level3 Communications (global fiber/internet HQ near US-36) — are in the western portion of Westminster, which is Jefferson County. Landlords renting to Maxar or Lumen employees near those campuses are almost certainly in Jefferson County Westminster and should expect to file at Golden, not Brighton, if eviction proceedings become necessary.

4. Colorado Landlord-Tenant Law Essentials

Security Deposits (CRS §38-12-102 through §38-12-104)

No deposit cap. Colorado imposes no statutory maximum on the security deposit amount. North metro market practice is typically 1–2 months’ rent for standard units and 1.5–2 months for pet-friendly units.

Return deadline. The landlord must return the deposit (or provide a written itemized statement) within 60 days after the tenancy terminates — or within 30 days if the tenant submits a written demand for return (CRS §38-12-103(1)). Best practice is to use 30 days as the working standard, since a tenant’s written demand can arrive at any time and immediately shortens the deadline. Set a calendar alert the moment a tenancy terminates.

Itemized statement required. Any partial return must be accompanied by a written itemized statement identifying each deduction with a corresponding dollar amount (CRS §38-12-103(2)). Returning less than the full deposit without an itemized statement is treated as wrongful withholding of the retained amounts, regardless of whether the deductions are legitimate.

Willful wrongful withholding penalty. CRS §38-12-103(3): a landlord who willfully retains the deposit in violation of the return requirements is liable for: (a) actual damages; (b) treble (3×) the amount wrongfully withheld; and (c) reasonable attorney’s fees and court costs. This 3× multiplier makes Colorado one of the most plaintiff-favorable deposit states in the western United States. The “willful” requirement means courts will look at whether the landlord had notice of the violation and acted deliberately.

Eviction Notice Requirements (CRS §13-40-104; HB 21-1121; SB 21-173)

Nonpayment: 10-day Demand for Payment or Possession. Colorado HB 21-1121 (effective January 1, 2022) extended the non-payment notice from 3 days to 10 days. Serve a written demand identifying the overdue amount and stating that the tenant has 10 days to pay in full. Colorado’s 10-day notice gives the tenant a genuine right to cure — if the tenant pays all past-due rent within 10 days, the notice is extinguished and eviction cannot proceed. 3-day notices served on Colorado tenants after January 1, 2022 are legally defective and will result in FED case dismissal.

Month-to-month termination: 21-day notice. Colorado SB 21-173 (effective January 1, 2022) extended the month-to-month termination notice from 10 days to 21 days. The notice must be in writing. Landlords who have been using 10-day termination notices since 2022 are serving defective notices — any resulting FED action can be defeated on procedural grounds.

Entry notice: 24 hours advance written notice. CRS §38-12-1102 requires advance written notice before any non-emergency entry. Verbal notice or text-only notice without a paper trail is insufficient; the notice should be in writing (text, email, posted note) and delivered at least 24 hours in advance.

Self-Help Eviction Prohibition (CRS §38-12-510)

Changing locks, removing a tenant’s belongings, shutting off utilities, or taking any other self-help action to remove a tenant without a court order violates CRS §38-12-510 and exposes the landlord to: up to $5,000 in punitive damages, plus actual damages, plus reasonable attorney’s fees and court costs. No self-help, ever. File the FED and wait for the writ.

Bedbug Disclosure (HB 22-1380; CRS §38-12-517)

Colorado HB 22-1380 (effective 2022) requires landlords to disclose any known current bedbug infestation AND any history of bedbug infestation in the prior three years at the time of lease signing. This is one of the most specific bedbug disclosure requirements in the country. Failure to disclose gives the tenant grounds to terminate the lease and potentially pursue damages. Include a written bedbug disclosure addendum in every new lease stating whether there is a current infestation or prior history within three years.

Habitability (CRS §38-12-501 et seq.; HB 21-1121)

Colorado’s Residential Tenants Health and Safety Act (HB 21-1121, effective January 1, 2022) codified and expanded habitability obligations. Landlords must maintain: weatherproof exterior; working heating (to 68°F minimum); hot and cold running water; functional electrical, plumbing, and HVAC; pest-free conditions; working smoke and CO detectors. Tenants may give written notice of habitability failures; if the landlord fails to cure within the statute’s timeframe, tenants have rights to repair-and-deduct (limited), rent withholding in escrow, or lease termination.

5. Suncor Energy Refinery — Commerce City’s Defining Dual-Pricing Employer

The Suncor Energy Commerce City refinery (4700 NE 2nd Ave, Commerce City CO 80022) is the only petroleum refinery in the Denver metropolitan area and has operated continuously since 1943, when it was built by Continental Oil Company (later Conoco) to supply wartime fuel demand. It processes approximately 98,000 barrels of crude oil per day, employs approximately 800–1,000 direct employees plus 500–700 contractors during maintenance turnarounds. Suncor Energy (TSX/NYSE: SU) acquired the refinery in 2003.

The North Commerce City Employment Premium

Refinery direct employees — process operators, engineers, maintenance mechanics, environmental specialists, chemists — earn wages ranging from approximately $65,000 to $130,000+ per year. Contractor positions during plant turnarounds (typically every 4–5 years) draw skilled tradespeople from across the region. This high-wage employment base creates consistent demand for north Commerce City rentals, particularly near the 96th Ave and Tower Rd corridor that provides convenient access to the refinery without requiring workers to live immediately adjacent to it.

North Commerce City 1BR rents — away from the refinery, with E-470 and DIA access — run approximately $1,200–$1,700, comparable to south Thornton pricing levels.

The South Commerce City Odor Discount

Properties within approximately 1–3 miles downwind of the refinery — generally south and southwest of the facility, given Colorado’s prevailing northwest winds — are subject to intermittent hydrogen sulfide (H²S) and volatile organic compound (VOC) odors on refinery processing days and during flaring events. These odor events are not constant but are perceptible on affected wind-direction days. The result is a 10–20% rent discount for comparable units in south/central Commerce City versus otherwise equivalent units in areas without odor exposure. South Commerce City 1BR rents run approximately $900–$1,350 — the most affordable Adams County rental stock in the north metro.

Disclosure Best Practice

Colorado does not have a specific statute requiring disclosure of industrial facility proximity for residential leases (unlike Texas §92.0135’s flood disclosure requirement). However, failing to disclose Suncor refinery proximity to tenants who then experience odor events creates real risk: tenants who feel deceived about air quality conditions are disproportionately likely to dispute deposit deductions, claim habitability failures, and seek early lease termination. Best practice: include a written disclosure in the lease for any property within 2–3 miles of the refinery (roughly south of Commerce City, or west and southwest of the 4700 NE 2nd Ave location) acknowledging proximity to an active petroleum refinery and the possibility of intermittent odor events. This converts a potential surprise into a disclosed, agreed-upon condition.

6. Adams 12 Five Star Schools — The North Metro Rent Premium

Adams 12 Five Star Schools is the public school district serving Northglenn, Thornton, Westminster (north portions), Broomfield (portions), and surrounding Adams and Broomfield county communities. The district enrolls approximately 37,000–39,000 students, employs approximately 4,500+ staff (teachers, administrators, support), and operates roughly 55+ campuses across its service area.

The “Five Star” designation reflects the district’s history of receiving the top accountability rating from the Colorado Department of Education, a record that translates directly into family rental demand.

The $150–$350 Monthly SFH Premium

Families with school-age children renting in the north Denver metro consistently prioritize Adams 12 school feeder zones when searching for single-family homes, and most will explicitly ask about elementary, middle, and high school assignment before signing a lease. Market data consistently shows a $150–$350 per month premium on 3-bedroom single-family homes in verified Adams 12 feeder zones versus comparable units in other districts or in lower-performing Adams 12 campuses.

For landlords, this means advertising the specific school feeder zone (by name — e.g., “Northglenn High School district” or “Horizon High School feeder zone”) in rental listings targeted at families can command meaningfully higher rent than generic “Adams County” or “North Denver” framing.

Key Adams 12 High Schools in the Five-City Corridor

• Northglenn High School (601 W. 100th Pl, Northglenn) — serves central and north Northglenn
• Mountain Range High School (12500 Huron St, Westminster) — serves northwest Northglenn/Westminster boundary area
• Legacy High School (near 120th Ave, Broomfield/Westminster) — serves some Westminster west properties
• Horizon High School (Thornton) — serves central and south Thornton
• Thornton High School (Thornton) — serves north Thornton

Critical: Brighton Is NOT Adams 12

Brighton School District 27J is a completely separate Adams County school district serving Brighton, Henderson, and eastern Adams County communities. Brighton residents are NOT in Adams 12. Landlords in Brighton marketing to Adams 12 families should verify that their property’s address is indeed within the Adams 12 boundary (which it almost certainly is not in Brighton itself). The two districts have different accountability ratings and different rent premium profiles.

Westminster Properties: Verify the District

Westminster properties in the western and southern portions of the city may fall within Jefferson County R-1 school district rather than Adams 12 — consistent with the Jefferson County boundary. Always verify school district assignment by property address at the Colorado Department of Education boundary tool or by calling the relevant district enrollment office.

7. Denver International Airport — The Corridor’s Structural Demand Driver

Denver International Airport (DIA) is approximately 25 miles northeast of downtown Denver, positioned at the geographic center of the north metro corridor. With approximately 37,000 total on-site employees (United Airlines, Southwest, Frontier, American, TSA, airport operations, concessions, cargo, ground transportation, retail), DIA is among the largest single-site employment centers in Colorado. It is the third-busiest U.S. airport by total passengers.

Brighton: Closest Affordable Community to DIA

Brighton is approximately 14 miles south of DIA via US-85 (which runs directly to DIA’s employee parking area) and E-470 (providing toll-road access to DIA’s Peña Blvd terminal entrance). At DIA employee wages in the $18–$100,000+ range, Brighton’s relative affordability (1BR from $1,000–$1,700 depending on submarket) makes it one of the most cost-efficient DIA commuter options in any Adams County community.

Landlords marketing Brighton units to DIA employees can specifically reference US-85 direct commute access, E-470 express connection, and typical commute times of 20–30 minutes against DIA’s shift schedules.

Commerce City North: The Other 14-Mile DIA Community

North Commerce City, near the 96th Ave / Tower Rd area, is also approximately 14 miles from DIA via E-470 east. This proximity, combined with Commerce City’s generally lower rents compared to Aurora or Thornton, makes north Commerce City a natural DIA employee community. Amazon’s logistics and air cargo facilities at DIA further reinforces this connection, with Commerce City’s established Amazon fulfillment infrastructure creating a dual-employer demand base for north Commerce City rentals.

Thornton: RTD N Line to DIA Connection

Thornton is served by the RTD N Line (the A Line branch to DIA diverges, but Thornton has light rail access at the Eastlake at 124th Station and 124th Ave / N. Washington station area). While Thornton is approximately 35 minutes by car from DIA via I-76 east, the RTD A Line from downtown Denver to DIA connects to Thornton-area transit via the N Line. Car access remains faster for DIA employees on shift schedules, but RTD connectivity supports Thornton’s broader Denver employment base.

8. Five-City Analysis

Brighton CO (Adams County Seat) — Courthouse Advantage + DIA Commuter Market

Brighton (~43,000–47,000 population) is the Adams County seat and the only Adams County city where evictions file in-city. The Adams County Combined Court at 1100 Judicial Center Dr is within Brighton’s municipal limits, eliminating the courthouse travel requirement that burdens all other Adams County landlords.

Brighton’s rental market is anchored by four demand pillars: DIA commuter demand (14 miles south via US-85/E-470; ~25,000–35,000 DIA workers need affordable housing in the corridor); Adams County government employment (the county seat hosts courts, assessor, health department, social services, and the full county administration, with ~4,000+ county employees many of whom are Brighton-based); Platte Valley Medical Center (1600 Prairie Center Pkwy; Intermountain Healthcare affiliate; 140-bed acute care; Level III Trauma Center; ~700–900 employees); and the I-76 logistics corridor (Brighton’s US-85/E-470/I-76 interchange area hosts Amazon, FedEx, UPS, and Prologis-affiliated distribution facilities drawing thousands of logistics workers).

New development: Brighton Crossings (southeast Brighton; master-planned community 2015+; trail network, community amenities) commands the market’s highest rents. Downtown Brighton and the Bridge Street Historic District offer the most affordable Brighton stock. Brighton School District 27J (~900+ employees; ~6,000 students) is the school district anchor; it is separate from Adams 12.

2026 rents: Brighton Crossings 1BR $1,300–$1,700; Prairie Center/US-85 corridor 1BR $1,100–$1,600; downtown established 1BR $1,000–$1,400.

Northglenn CO (Adams County) — Adams 12 Premium + Westminster Tech Spillover

Northglenn (~42,000–45,000 population) sits between Westminster (to the west) and Thornton (to the east/south) along the I-25/US-36 north Denver corridor. Northglenn is entirely within Adams County (unlike Westminster, which straddles the county line) — all evictions file at Adams County Combined Court in Brighton, approximately 20 miles northeast.

Northglenn’s rental demand is driven by: Adams 12 Five Star Schools ($150–$350/month SFH premium in preferred feeder zones; Northglenn High School and Mountain Range High School are the anchor campuses); North Suburban Medical Center (9191 Grant St, on the Thornton/Northglenn border; ~135 beds; ~700+ employees creating healthcare worker rental demand); Westminster tech corridor spillover (Maxar Technologies ~2,000+ engineers and Lumen Technologies ~3,000+ employees are a 5–10 minute drive west; Northglenn’s Adams County pricing runs 5–15% below Jefferson County Westminster); and the I-25/104th Ave retail and logistics corridor (Walmart Supercenter, Target, FedEx, Amazon delivery stations; ~2,000–3,500 combined retail/logistics employment).

Border note: Northglenn’s western boundary abuts Westminster along a north-south line near Sheridan Blvd/Wadsworth Blvd. Properties on the Northglenn/Westminster border should have their county verified — an Adams County address that appears to be “Westminster” may actually be Northglenn.

2026 rents: I-25/104th Ave corridor (newer apartments) 1BR $1,300–$1,800; central Northglenn established 1BR $1,100–$1,600; Adams 12 SFH feeder zone add $150–$350 over equivalent.

Commerce City CO (Adams County Largest City) — No Courthouse + Suncor Dual Pricing

Commerce City (~63,000–67,000 population) is Adams County’s largest city and northeast Denver’s dominant industrial and logistics hub. Despite its size, it has no courthouse; all evictions file at Adams County Combined Court in Brighton (18–22 miles northeast).

Commerce City’s defining employer is Suncor Energy (Colorado’s only petroleum refinery; ~800–1,000 direct employees; $65K–$130K+) which creates the north premium / south discount dynamic described in Section 5. Beyond Suncor, major demand anchors include: Amazon (multiple I-270/Quebec corridor facilities; ~2,000–3,000 employees; $18–$26/hour; drives affordable 1BR/2BR demand); Walmart Distribution (I-76/Chambers; ~800–1,200 employees); Dick’s Sporting Goods Park (6000 Victory Way; 18,000-seat Colorado Rapids MLS stadium; ~200 FTE plus 2,000+ part-time/seasonal event workers); and Rocky Mountain Arsenal National Wildlife Refuge (6550 Gateway Rd; 17,000 acres; former US Army/Shell Chemical weapons production site decommissioned in 1989 and cleaned up by 2010; now a US Fish & Wildlife bison/bald eagle wildlife refuge free to the public; a unique north Commerce City amenity that adds walkability/recreation value to adjacent residential properties).

Commerce City also benefits from E-470 DIA access: the toll road connects north Commerce City to DIA in approximately 14 miles, making it one of the closest and most affordable DIA commuter locations.

2026 rents: North Commerce City/DIA corridor 1BR $1,200–$1,700; mid Commerce City/Dick’s area 1BR $1,100–$1,600; central/south refinery-adjacent 1BR $900–$1,350.

Westminster CO (Adams County East + Jefferson County West) — Tech Hub County Split

Westminster (~115,000 population) is the most complex jurisdiction in the five-city corridor, straddling the Adams/Jefferson county line and hosting two of the region’s most significant tech employers.

Maxar Technologies (~1300 W. 120th Ave, Westminster; space technology company; WorldView satellite imaging; ~2,000+ engineers and tech professionals; acquired by Advent International; formerly DigitalGlobe + MacDonald Dettwiler) is Westminster’s highest-wage employer, generating demand for quality 1BR/2BR units near the campus.

Lumen Technologies / Level3 Communications (global fiber internet infrastructure company; CDN, MPLS networking, enterprise connectivity; ~3,000+ Westminster employees; global HQ is in Monroe LA but major campus is Westminster; formerly Level3, acquired by CenturyLink, rebranded Lumen) is Westminster’s second major tech-sector employer.

Westminster Station (RTD W Line / US-36 BRT; transit-oriented development hub at the Wadsworth Blvd/US-36 interchange) provides the north metro’s most direct RTD transit connection to downtown Denver and Boulder. The W Line (light rail) connects Westminster Station to downtown Denver in approximately 25–30 minutes. Westminster Station walkable apartments command the corridor’s highest rents.

2026 rents: Westminster Station/W-Line proximity 1BR $1,500–$2,200; Legacy Ridge/Bradburn Village (Jefferson County) 1BR $1,600–$2,400; Federal Blvd/US-36 (Adams County) 1BR $1,200–$1,800.

Thornton CO (Adams County) — Largest North Metro City + Eastlake RTD N Line

Thornton (~140,000 population) is the sixth-largest city in Colorado and the largest city in Adams County. Like Commerce City and Northglenn, Thornton is entirely within Adams County — all evictions file at Adams County Combined Court in Brighton (approximately 18–22 miles north).

Thornton’s demand anchors: Amazon Adams County fulfillment center (~1,500–3,000 workers; $18–$22/hour; drives consistent demand for affordable 1BR/2BR near the I-25/120th Ave area); RTD N Line (Eastlake at 124th Station) (light rail north extension connecting Thornton to downtown Denver via Commerce City and RINO; the Eastlake at 124th Station is the N Line terminus and creates a transit-oriented rental premium within walkable distance of the station); Denver International Airport (approximately 35 minutes via I-76 east; DIA’s shift workers represent a significant Thornton demand segment); and Adams 12 Five Star Schools (Thornton is a core Adams 12 service area; Horizon High School and Thornton High School feeder zones drive the SFH premium for family tenants).

Thornton also has healthcare employment through proximity to North Suburban Medical Center (at the Thornton/Northglenn border; ~700+ employees) and AdventHealth (various north metro facilities).

2026 rents: Eastlake at 124th/N Line vicinity 1BR $1,400–$2,000; 144th Ave/north Thornton corridor 1BR $1,300–$1,900; south Thornton established 1BR $1,300–$1,800; Adams 12 SFH feeder zone add $150–$350 over equivalent.

9. Major Employer Table — Denver CO North Metro 2026

10. Rent Ranges by Submarket — Denver CO North Metro 2026

11. Ten Costliest Mistakes — Denver North Metro Landlords

1. Mistake 1: Filing a Commerce City Eviction at Denver County Court

   Commerce City shares a southern border with Denver along Vasquez Blvd/Brighton Blvd — and many landlords assume that a Commerce City address can be filed in Denver County Court. It cannot. Commerce City is Adams County. File at Adams County Combined Court, 1100 Judicial Center Dr, Brighton CO 80601. Filing at Denver County Court for an Adams County property will be dismissed immediately.

2. Mistake 2: Filing a Westminster Eviction at the Wrong County Court

   Westminster straddles Adams/Jefferson county line. Filing a Jefferson County Westminster eviction at Adams County Brighton, or an Adams County Westminster eviction at Jefferson County Golden, results in dismissal. Always verify county via the Adams County Assessor (assessor.adcogov.org) or Jefferson County Property Search (jeffco.us) before filing. Do not rely on ZIP code.

3. Mistake 3: Serving a 3-Day Notice for Nonpayment

   Colorado HB 21-1121 extended the mandatory nonpayment notice from 3 days to 10 days, effective January 1, 2022. 3-day notices served in 2022 or later are legally defective. Adams County courts will dismiss FED cases filed on defective 3-day notices. Always serve a 10-Day Demand for Payment or Possession.

4. Mistake 4: Using a 10-Day Month-to-Month Termination Notice

   Colorado SB 21-173 extended the month-to-month termination notice from 10 days to 21 days, also effective January 1, 2022. 10-day termination notices served on month-to-month tenants after January 1, 2022 are defective and cannot support an FED action. Use written 21-day advance notice for all month-to-month terminations.

5. Mistake 5: Missing the Written Deposit Return Deadline

   The 60-day return deadline can be accelerated to 30 days if the tenant sends a written demand. Tenants who send a written demand and receive no deposit or itemized statement within 30 days have a strong willful withholding claim, triggering the 3× penalty + attorney fees. Set a calendar alert the moment tenancy terminates and treat every tenant communication as a potential written demand.

6. Mistake 6: Returning Deposit Without Itemized Statement

   Returning less than the full deposit without providing a written itemized statement identifying each deduction by category and dollar amount is treated as wrongful withholding of the retained portion under CRS §38-12-103(2). Even legitimate deductions are legally unenforceable without proper itemization.

7. Mistake 7: Not Disclosing the Suncor Refinery for Commerce City South/Central Units

   Tenants who sign leases for Commerce City properties south or southwest of the Suncor refinery without understanding the odor exposure become disproportionately likely to dispute deposits, claim habitability failures, and demand early lease release. A written proximity-and-odor disclosure in the lease converts the issue from a surprise to a disclosed risk.

8. Mistake 8: Performing Self-Help Eviction (Lock Changes, Utility Shutoffs)

   CRS §38-12-510 prohibits any self-help removal of a tenant without a court-issued Writ of Restitution. Changing locks, removing belongings, or cutting utilities without a court order exposes the landlord to up to $5,000 in punitive damages plus actual damages plus attorney’s fees. The $5,000 punitive cap is a floor in some cases; courts have discretion to award more in egregious situations.

9. Mistake 9: Treating Adams 12 and Brighton SD 27J as Interchangeable

   Brighton properties are NOT in Adams 12 Five Star Schools. They are in Brighton School District 27J, a separate Adams County district. Advertising a Brighton property as “Adams 12 district” to family tenants is both inaccurate and creates liability if tenants discover the misrepresentation after signing. Similarly, properties near the Northglenn/Westminster border that appear to be “Westminster addresses” may be Adams 12 Northglenn — verify by specific address.

10. Mistake 10: Omitting the Bedbug Disclosure Addendum

    Colorado HB 22-1380 (CRS §38-12-517) requires landlords to disclose any known current infestation AND any history of infestation in the prior three years. Omitting this disclosure gives tenants grounds to terminate the lease and potentially pursue damages. Include a bedbug disclosure addendum in every new Colorado lease stating current infestation status and three-year history.

12. Twelve-Step Landlord Checklist — Denver CO North Metro

1. Identify the county for your property (Adams vs. Jefferson for Westminster; Adams for Brighton/Northglenn/Commerce City/Thornton) using the county assessor’s website. Note the correct courthouse for this address.
2. Verify school district by property address (Adams 12, Brighton SD 27J, Jefferson County R-1, or other). If targeting families, confirm the specific feeder zone by calling the district enrollment office.
3. Assess Suncor proximity (Commerce City properties only): for any property within 2–3 miles of 4700 NE 2nd Ave, prepare a written refinery-proximity and odor-disclosure addendum for inclusion in the lease.
4. Draft the lease with 10-day nonpayment notice language, 21-day month-to-month termination language, and 24-hour entry notice requirement. Ensure no holdover provision shortens these statutory periods.
5. Include bedbug disclosure addendum per CRS §38-12-517: current infestation status and prior three-year history. Required for every new Colorado lease.
6. Conduct written move-in inspection with tenant present and tenant co-signature on the condition report. Photograph every room, every appliance, every fixture. Retain all documentation for the full tenancy + 1 year after.
7. Set deposit calendar alerts: 30-day alert (treat this as the default deadline due to written demand acceleration risk) and 60-day outer deadline. Never rely on the 60-day deadline without monitoring for written demands.
8. Use written entry notices (text with paper trail, email, or posted note) at least 24 hours in advance for every non-emergency entry. Record the notice with date/time/method in a lease log.
9. Serve 10-Day Demand for Payment or Possession (not 3-day) for any nonpayment situation. Confirm service method (personal delivery, certified mail, or posted + mailed per CRS §13-40-108) and document immediately.
10. File FED at correct courthouse: Adams County Combined Court (1100 Judicial Center Dr, Brighton CO 80601) for Adams County properties. Jefferson County Combined Court (100 Jefferson County Pkwy, Golden CO 80401) for west Westminster properties.
11. Never change locks or shut off utilities without a court-issued Writ of Restitution executed by the Adams County or Jefferson County Sheriff. Document every step of the eviction proceeding from notice through writ execution.
12. Return deposit (or itemized statement) within 30 days of tenancy termination (or immediately if written demand received). Attach written itemized statement for any retained amount. Never return without documentation.

13. Frequently Asked Questions