Rent increase calculator for California, Oregon and Washington

Enter your current rent to see the most a landlord may charge after the next increase under the statewide rent caps, with the official inflation figure behind it.

California: AB 1482 (Civil Code §1947.12)

The rule

• Over any 12 months, rent may rise by at most 5% plus the percentage change in the cost of living, or 10%, whichever is lower (Civil Code §1947.12(a)(1)).
• The percentage is measured against the lowest gross rent charged in the 12 months before the increase; discounts and concessions do not lower that base.
• Cost of living = change in the CPI-U for the metro area (BLS) between April of the prior year and April of the current year; where April is not published, March to March. Counties outside the four metro areas use the California CPI from the Department of Industrial Relations. Rounded to the nearest 0.1% (§1947.12(g)).
• The new figure applies to increases taking effect on or after August 1 each year.
• At most two increases within 12 months for the same tenant (§1947.12(a)(2)). Rent for a new tenancy can be set freely (§1947.12(b)).
• Notice follows Civil Code §827 (30 days for increases up to 10%). The cap expires on January 1, 2030 unless extended (§1947.12(o)).

Who is exempt

• Housing with a certificate of occupancy issued within the last 15 years (rolling date; mobilehomes excepted).
• Single-family homes and condos owned by individuals (not a REIT, corporation or LLC with a corporate member) if the tenant received the statutory exemption notice; for tenancies since July 1, 2020 it must be in the lease.
• A duplex where the owner lives in the other unit since the start of the tenancy.
• Deed-restricted affordable housing, dormitories, and units already covered by a stricter local rent control ordinance.

Stricter local rules

• San Francisco (units built before June 13, 1979): 1.6% for March 1, 2026 – February 28, 2027. SF Rent Board
• Oakland (units built before 1983): 2.3% for August 1, 2026 – July 31, 2027. Oakland Rent Adjustment Program
• Berkeley: 1.0% Annual General Adjustment for 2026 (from January 1, 2026). Berkeley Rent Board
• City of Los Angeles RSO (most units built before October 1978): 3% for July 1, 2026 – June 30, 2027; since February 2, 2026 the formula is 90% of CPI with a 1% floor and 4% ceiling. LA Housing Department
• Many other cities (for example West Hollywood, Santa Monica, San Jose, Pasadena, Richmond, unincorporated Los Angeles County) have their own rent stabilization. Check your city before using the statewide figure.

Sources: Civil Code §1947.12 (leginfo.legislature.ca.gov) · California Attorney General: rent caps by region · BLS regional CPI · DIR California CPI

Oregon: SB 611 (ORS 90.323 and 90.324)

The rule

• Rent may rise by at most 7% plus the September annual 12-month average change in the CPI-U West Region, or 10%, whichever is lower (ORS 90.324).
• The Office of Economic Analysis publishes the figure by September 30; it applies to the following calendar year.
• No increase during the first year of a tenancy, at most once in any 12 months, with at least 90 days' written notice (ORS 90.323(2)).
• Manufactured-home and floating-home parks with more than 30 spaces: at most 6% in 2026 and 2027 (ORS 90.600).

Who is exempt

• Units whose first certificate of occupancy was issued less than 15 years before the date of the notice (ORS 90.323(5)(a)). A notice claiming this exemption must state the facts.
• Regulated or certified affordable housing where the tenant's share does not rise, or the change follows program rules or a change in the tenant's income.

Sources: Oregon Office of Economic Analysis: rent stabilization · ORS 90.323 · DAS release: 2027 maximum

Washington: HB 1217 (RCW 59.18.700–.720)

The rule

• Rent may rise by at most 7% plus the CPI, or 10%, whichever is less, in any 12 months (RCW 59.18.700(1)(a)(ii)).
• CPI = the June 12-month percent change in the CPI-U for the Seattle area (BLS series CUURS49DSA0). The Department of Commerce publishes the figure in July for the following calendar year.
• No increase during the first 12 months of a tenancy (RCW 59.18.700(1)(a)(i)).
• At least 90 days' written notice of any rent increase (RCW 59.18.140(3)(a)); 30 days for subsidized rents based on income.
• Manufactured/mobile home lots: at most 5% in any 12 months (RCW 59.20.370). In force since May 7, 2025; expires July 1, 2040.

Who is exempt

• Buildings whose first certificate of occupancy was issued 12 years or less before the notice (RCW 59.18.710).
• Public housing authorities, public development authorities, nonprofit rent-regulated housing and qualified low-income/LIHTC properties.
• Owner-occupied single-family homes (incl. ADUs), owner-occupied duplexes to fourplexes, and rooms where the tenant shares a kitchen or bathroom with the owner, unless the owner is a REIT, corporation or LLC with a corporate member.

Sources: RCW 59.18.700 · RCW 59.18.710 (exemptions) · WA Commerce: HB 1217 landlord resource center

States without a statewide cap

Only California, Oregon and Washington cap rent increases statewide for most market-rate housing. In other states, rent control is either banned by state law or set by individual cities (for example New York City rent stabilization, Washington D.C., or St. Paul, Minnesota). Check your city before assuming there is no limit.