Know your legal max. Serve the notice. Keep the receipts.
RentCeiling tells small landlords in rent-controlled U.S. jurisdictions the legal maximum rent increase for each unit, generates the statutorily-compliant tenant notice, and logs every calculation for audits or disputes.
Covers ten jurisdictions today: California · Los Angeles (RSO) · San Francisco · Berkeley · Oregon · New York (NYC RSL) · Washington DC · Saint Paul MN · Montgomery County MD · Washington State — see them all side by side.
Why this exists
Three reasons small landlords get this wrong.
Caps change every year.
The CPI piece of AB 1482 is recomputed every August — last year's Google search will get you sued. Oregon recalculates against the West-Region CPI on the same cycle. The 2026 numbers are not the 2025 numbers.
Overshoot = treble damages.
Cal. Civ. Code §1947.12(h)(2) lets the tenant recover up to three times the overcharge plus attorney fees. Oregon ORS §90.323(5) is three months' rent plus damages and fees. One miscalculation can erase a year of NOI.
Your PMS won't compute it.
AppFolio, Buildium, Yardi, RealPage, Stessa, Baselane — none compute per-unit caps against jurisdiction-specific formulas. You're on your own. Until now.
Covered jurisdictions
Click your state for the local cap, formula, and notice rules.
Pricing
Free for one unit. $19/mo for everything else.
No surprises. Pricing is anchored to the $150–$300 a landlord-tenant law firm will charge to review one notice — pay us once and you get unlimited.
Free calculator
$0
- 1 unit
- Current legal max
- Plain-English formula breakdown
- No PDF, no log
Pro
$19/mo
- Up to 20 units
- Unlimited statutory notice PDFs
- Compliance log (audit-ready)
- CSV / PDF export
- Annual rule-set refresh — at no extra cost
Pay per notice
$9/notice
- One-off statutory PDF
- One log entry
- No subscription
- For landlords with 1–2 increases per year
Common questions
What landlords ask before they trust the number.
Is RentCeiling legal advice?
No. RentCeiling is a deterministic calculator and a document generator. We compute the statutory cap from public statute plus public CPI data; we render the notice PDF from the statute's prescribed fields. Nothing here is legal advice, and we don't practice law. Consult counsel for disputes, banking-provision edge cases, or any jurisdiction not yet covered. See Terms for the full no-attorney-client-relationship and no-UPL disclaimer.
Which jurisdictions are covered today?
Ten U.S. jurisdictions are live as of April 2026: California (AB 1482, 8.8% in 2026), Los Angeles RSO, San Francisco, Berkeley (1.0% CY 2026 — lowest cap in the catalogue), Oregon (SB 611, 9.5% in 2026), New York (NYC RSL, 2.75% / 5.25% on the 2025-2026 lease cycle), Washington DC, Saint Paul MN, Montgomery County MD, and Washington State (RCW 59.18.355, 9.683% multi-unit / 5% manufactured-housing in 2026). See them all side by side →
Can I see the rule-set?
Yes — the rule-set is served as plain JSON at /rules/{slug}.json. For California see /rules/california.json; for Oregon, /rules/oregon.json; for Berkeley, /rules/berkeley.json. The /rules/index.json endpoint lists every jurisdiction with cap, statute citation, and last-refreshed date. If your attorney disagrees with a number, they can point at the exact JSON line.
What does it cost?
Free for one unit and the legal-max calculation with a plain-English formula breakdown. $9 per notice for a one-off statutory PDF and one log entry. $19 per month for Pro: up to 20 units, unlimited notices, full compliance log, CSV/PDF export, and the annual rule-set refresh at no extra cost. The $150–$300 a landlord-tenant law firm typically charges to review one notice is the anchor we’re pricing against. Full pricing →
What happens if a rule changes mid-year?
California’s AB 1482 cap updates in August each year with the new CPI figures for the next calendar year; Oregon’s SB 611 cap is posted by the Department of Administrative Services in September. Annual rent guidelines for NYC, DC, San Francisco, Berkeley, and Montgomery County publish on each jurisdiction’s own calendar. When any of them changes, we ship a rule-set PR the same day. Pro subscribers get a changelog entry and a version-hash audit record — your 2026 calc stays locked to the 2026 rule-set even after the next refresh ships. Free-tier users see the new cap on their next calculation without doing anything.
Get launch updates.
We'll email when notice generation goes live, and when each new jurisdiction ships.