Sunnyvale rent control 2026 No local RSO. AB 1482 applies: 2026 cap ≈ 8% (5% + ~3% San Jose-Sunnyvale-Santa Clara MSA CPI, below 10% ceiling).

Sunnyvale's 2026 cap: AB 1482 with San Jose MSA CPI

Under California Civil Code §1947.12(a)(1), the maximum annual rent increase for a covered Sunnyvale residential rental unit is the lesser of:

1. 5.0% plus the percentage change in the Consumer Price Index for All Urban Consumers (CPI-U) for the San Jose-Sunnyvale-Santa Clara, CA Metropolitan Statistical Area for the 12-month period ending on April 1 of the year prior to the increase (or the most recently published 12-month period ending before the effective date of the increase); OR
2. 10.0% absolute ceiling.

Sunnyvale is in Santa Clara County, which is part of the San Jose-Sunnyvale-Santa Clara, CA MSA. The applicable AB 1482 CPI is the San Jose MSA CPI — NOT the Los Angeles MSA, San Francisco MSA, or any other region. For 2026, San Jose-Sunnyvale-Santa Clara MSA CPI is running approximately 3.0%. Calculation: 5% + 3% = 8%, below the 10% ceiling. Sunnyvale’s 2026 AB 1482 rent-cap is approximately 8%.

The Santa Clara County overlay comparison for 2026:

• Sunnyvale (AB 1482 only) — ~8% for 2026 (5% + 3% San Jose MSA CPI). This page.
• Santa Clara city (AB 1482 only) — ~8% for 2026. No local RSO. Same San Jose MSA CPI.
• Cupertino (AB 1482 only) — ~8% for 2026. No local RSO. Same San Jose MSA CPI.
• Milpitas (AB 1482 only) — ~8% for 2026. No local RSO. Same San Jose MSA CPI.
• Mountain View CSFRA Charter Article XVII (Measure V 2016) — ~1.7% for 2026 (100% × SF-Oakland-Hayward CPI capped at 5%). February 1, 1995 first-CoC cutoff (Costa-Hawkins-anchored). Direct border with Sunnyvale.
• San Jose ARO §17.23 — ~1.5% for 2026 (lesser of 5% or 100% × SF CPI, capped at 5%). September 7, 1979 first-CoC cutoff. Covers 3+ unit buildings. Sunnyvale’s southern and eastern border neighbor.
• East Palo Alto Chapter 14 Measure J (2010) — ~1.4% for 2026 (80% × SF CPI capped at 10%). January 1, 1988 first-CoC cutoff. San Mateo County (not Santa Clara), but a reference point for the Bay Area local-overlay band.

The key structural difference: California’s local rent-control overlays (Mountain View at 100% × CPI, San Jose at lesser-of-5%-or-100%-CPI) apply a fraction of CPI with no additive, producing 2026 caps of 1.5–1.7%. AB 1482 adds a 5% additive to CPI, producing an ~8% floor for 2026 even in the same low-CPI Bay Area environment. This structural divergence between adjacent Sunnyvale and Mountain View is the sharpest cross-boundary rent-cap gap in Santa Clara County.

Why Sunnyvale has no local rent control

The City of Sunnyvale (population ~155,000) is one of the largest incorporated municipalities in Santa Clara County and Silicon Valley’s tech corridor. Despite its size, Sunnyvale City Council has not enacted a local RSO. Several structural factors explain the absence:

• Tech-era housing stock: A significant share of Sunnyvale’s apartment stock was built during post-1980 tech booms, meaning a large proportion of units would be exempt from any local RSO under Costa-Hawkins §1954.52(a)(1) (February 1, 1995 cutoff) or under the newer AB 1482 15-year rolling exemption. The universe of pre-1995 covered units is smaller relative to total rental stock compared to older Bay Area cities.
• Costa-Hawkins constraint: Any local Sunnyvale RSO would be limited by Costa-Hawkins to buildings with first CoC before February 1, 1995 (or an earlier cutoff chosen by the ordinance). Many of Sunnyvale’s largest apartment complexes were built in the 1990s–2010s and would be exempt from day one.
• Proximity to Mountain View and San Jose RSOs: With Mountain View CSFRA (effective 2017) covering the north border and San Jose ARO (in force since 1979) covering the south and east, advocacy energy for a Sunnyvale-specific RSO has been diffused by existing protections in adjacent jurisdictions covering the higher-density corridors along El Camino Real and Stevens Creek Boulevard.
• Post-AB-1482 landscape: AB 1482’s passage in 2019 provided a statewide baseline that reduced political urgency for a local Sunnyvale ordinance, just as it did for Santa Clara (the city), Cupertino, Milpitas, and other Silicon Valley cities without pre-existing RSOs.

The practical consequence: a tenant in a 1988 three-unit apartment building in Sunnyvale faces an AB 1482 cap of ~8% for 2026, while a tenant in an identical building one block east across the Sunnyvale-Mountain View city limit faces a Mountain View CSFRA cap of ~1.7% — a 6.3 percentage point difference on the same building type, same rent level, same labor market.

Which Sunnyvale units does AB 1482 cover?

AB 1482 covers Sunnyvale residential rental units unless excluded under Cal. Civ. Code §1947.12(d):

• Newly constructed units (15-year rolling exemption). Buildings with certificates of occupancy issued within the last 15 years are exempt. For 2026, buildings completed in or after approximately 2011 are exempt. The window shifts each year.
• Single-family homes and condominiums with a valid HHBO notice. A detached SFR or condominium where the landlord provided the AB 1482 Homeowner Exemption Notice (§1947.12(d)(5)(B)) at or before the commencement of tenancy (or before January 1, 2020 for pre-existing tenancies) is exempt. An SFR or condo landlord who FAILED to timely serve the notice is NOT exempt.
• Owner-occupied duplexes where the landlord occupies one unit as primary residence.
• Government-subsidized affordable housing (LIHTC, Section 8 PBV, BMR, RAD) with a recorded affordability agreement.
• Dormitories operated by accredited educational institutions.
• Hotels, motels, and short-term accommodations under 30 days.

A Sunnyvale landlord with a pre-2011 multi-unit apartment complex where tenants have been in place for 12+ months is fully covered by AB 1482’s ~8% rent-cap AND §1946.2 just-cause eviction. A landlord with a single-family home who properly served the HHBO notice at lease signing is exempt from the rent-cap (but still subject to just-cause eviction if the tenancy exceeds 12 months).

Notice requirements for Sunnyvale rent increases

California Civil Code §827(b) governs form and timing for all Sunnyvale residential rent-increase notices:

• 30-day rule under §827(b)(2)(A) — increases of less than 10% take effect 30 calendar days after service. Sunnyvale’s ~8% AB 1482 cap is under the 10% threshold, so all standard Sunnyvale rent-increase notices qualify for the 30-day rule.
• 90-day rule under §827(b)(3) — increases of 10% or more require 90 calendar days. Unreachable under AB 1482’s 10% ceiling.
• §1013 mailing-add — 5 additional days when notice is served by U.S. Mail. Effective period: 35 days for standard Sunnyvale notices.
• AB 1482 §1947.13 tenant-rights disclosure — required at commencement of tenancy and when serving any rent increase notice for covered units.
• No Sunnyvale city-level notice requirements — unlike Mountain View (CSFRA registration + notice citation) or San Jose (ARO registration + notice citation), Sunnyvale has no municipal registration program and no city-level notice citation requirement. Only the statewide §827(b) and §1947.13 rules apply.
• 12-month frequency rule — AB 1482 limits landlords to two rent increases per 12-month period, with the combined amount not exceeding the AB 1482 cap.

Just-cause eviction in Sunnyvale

AB 1482 §1946.2 imposes just-cause eviction requirements on covered Sunnyvale residential rental units after 12 months of continuous occupancy. The City of Sunnyvale has no local just-cause eviction ordinance; §1946.2 is the only just-cause protection for Sunnyvale tenants.

The structural gap compared to Mountain View: Mountain View CSFRA §1709 provides universal just-cause coverage reaching ALL Mountain View rentals regardless of whether they are CSFRA rent-cap-covered (including post-1995 buildings, SFRs, and newly constructed units). Sunnyvale tenants in units exempt from the AB 1482 rent-cap (newly constructed, SFRs with HHBO) may have limited or no just-cause eviction protection under AB 1482 if the tenancy has not crossed the 12-month threshold or if the unit falls into one of AB 1482’s just-cause exemptions.

The 11 AB 1482 just causes under §1946.2:

1. Non-payment of rent
2. Material breach of a lease term not cured after written notice
3. Maintaining a nuisance or causing substantial damage
4. Refusal to permit lawful access (Cal. Civ. Code §1954)
5. Unauthorized sub-letting in violation of the lease
6. Refusal to renew a written lease at expiration on substantially similar terms
7. Criminal activity on the premises
8. Owner or qualified family member intends to occupy as primary residence (90-day notice; one month relocation assistance for 12+ months’ tenancy)
9. Withdrawal of the unit from the rental market (relocation assistance required)
10. Substantial rehabilitation under permit requiring temporary vacancy
11. Demolition with permit

Relocation assistance equal to one month’s rent applies to owner-move-in and withdrawal-from-market evictions for tenancies of 12 months or more. Ellis Act withdrawals follow Cal. Gov. Code §§7060–7060.7 and trigger §1954.535 re-rental restrictions.

Penalty for exceeding AB 1482 in Sunnyvale

A rent collected above the lawful AB 1482 cap in Sunnyvale is unlawful under Cal. Civ. Code §1947.12. Because Sunnyvale has no local RSO and no local hearing officer, tenants must pursue remedies in Santa Clara County Superior Court. The contrast with Mountain View is direct: a Mountain View tenant files a petition with the CSFRA Rental Housing Committee (an administrative tribunal); a Sunnyvale tenant with the identical complaint files a civil action in Superior Court.

AB 1482 remedies under §1947.12(h):

1. Reduction of rent to the lawful AB 1482 rate.
2. Refund of the unlawfully-collected amount with statutory interest at 10% per year under Cal. Civ. Code §3289(b).
3. Treble damages where willful — up to three times the unlawfully-collected rent, not less than $250 per violation (§1947.12(h)(3)).
4. Attorney fees to prevailing tenants under §1947.12(i).

The three-year limitation under Cal. Code Civ. Proc. §338 applies. Tenants may raise the AB 1482 overcharge as an affirmative defense to an unlawful-detainer action for non-payment under Cal. Code Civ. Proc. §1161.

Sunnyvale vs. Mountain View and San Jose: the cross-boundary gap

The most distinctive feature of Sunnyvale’s rent-cap landscape is its direct border with Mountain View CSFRA and its proximity to San Jose ARO. A side-by-side comparison for 2026:

• Sunnyvale (AB 1482) — ~8% cap for 2026. No local RSO. No local petition process. Just-cause via §1946.2 only. San Jose MSA CPI (~3%) + 5% additive. No first-CoC cutoff in local ordinance; AB 1482 applies to pre-2011 buildings (15-year rolling).
• Mountain View CSFRA (Charter Article XVII) — ~1.7% cap for 2026 (100% × SF MSA CPI capped at 5%). February 1, 1995 first-CoC (Costa-Hawkins-anchored). Annual General Adjustment cycle September 1 – August 31. ~$169/year per-unit Rental Housing Fee. Banking permitted with 10% per-notice ceiling (§1707(c)). Universal just-cause (§1709). Rental Housing Committee administrative petition process (§1710). Voter-approved Charter amendment (Measure V, November 8, 2016).
• San Jose ARO (§17.23 SJMC) — ~1.5% cap for 2026 (lesser of 5% or 100% × SF MSA CPI). September 7, 1979 first-CoC cutoff. 3+ unit buildings. Banking permitted with 8.0% per-notice ceiling. ~$63/year per-unit registration. San Jose Rent Stabilization Program. Tenant Protection Ordinance (TPO §17.23.1300) extends just-cause to all San Jose rentals.

A landlord portfolio straddling Sunnyvale and Mountain View faces a compliance bifurcation: Mountain View units require CSFRA registration (~$169/unit/year), annual AGA calculation, banking-ceiling tracking, and Rental Housing Committee registration; Sunnyvale units require only AB 1482 §1947.12 compliance (no registration, no local petition program, no annual fee). The Mountain View compliance burden is meaningfully higher — but the Mountain View cap (1.7%) is meaningfully lower than Sunnyvale (8%), reflecting the structural trade-off in the adjacent-jurisdiction landscape. For a $3,000/month Sunnyvale unit: the AB 1482 ~8% cap allows an increase to $3,240; the Mountain View CSFRA ~1.7% cap on an identical adjacent unit would cap the increase at $3,051. For a landlord managing units on both sides of the border, the per-unit financial outcome diverges by nearly $189/month.

How RentCeiling handles Sunnyvale AB 1482 compliance

The free California calculator routes Sunnyvale units to the AB 1482 lesser-of formula using the San Jose-Sunnyvale-Santa Clara MSA CPI (not the LA MSA), with the 15-year rolling exemption check (is the building pre-2011 for 2026?), the SFR/condo HHBO-notice status check, the §1946.2 just-cause trigger check, and the 12-month increase-frequency rule. The California notice generator emits a §827(b)-compliant Sunnyvale rent-increase notice with the AB 1482 §1947.13 disclosure attached and the §1013 mailing-add applied. The AB 1482 regional CPI calculator shows the current San Jose MSA figure. The Mountain View CSFRA page walks the neighboring overlay. The San Jose ARO page walks the adjacent overlay for San Jose units. The Los Gatos AB 1482 page covers the southern Santa Clara County AB-1482-only context. Open rule-set at /rules/california.json.

Run the California 2026 cap calculator (free)

Common questions about Sunnyvale rent control