Build one dated file for the address. Record the property facts that may change coverage, give each official source a single question to answer, and mark every conclusion supported, contradicted, or unresolved. California landlords must check both state and local protections; for a San Francisco property, use Planning records for property facts and the Rent Board for Rent Ordinance and Housing Inventory questions. [1] [2] [3]
Start with facts that can change the answer
California's Attorney General tells landlords to follow both state and local developments. Its Tenant Protection Act summary also lists property and tenancy details that can affect coverage, including ownership, certificate-of-occupancy timing, owner occupancy in a duplex, and whether a more protective local ordinance applies. [1]
- Exact street address, unit number, and assessor parcel or block-and-lot identifier.
- Property type, number of residential units, certificate-of-occupancy date, and available permit history.
- Current owner name and entity type, plus any owner-occupancy fact relevant to the question.
- Tenancy start date, lease and riders, current rent, and the specific action being considered.
- City and county. Do not assume the mailing city identifies every local authority.
Treat these as inputs, not a legal conclusion. If a fact is missing, write “unresolved” and identify the document or agency that could settle it.
Give every source one job
| Official source | Use it to answer | Do not use it to assume |
|---|---|---|
| California Attorney General | Which statewide protections and common exceptions need investigation | That a short summary resolves every exception or notice requirement |
| SF Planning Property Information Map | The address or block-and-lot record, zoning information, and property or permit leads | Whether the unit is rent controlled |
| San Francisco Rent Board | Rent Ordinance guidance, Housing Inventory information, forms, and the correct agency contact | That one portal result answers every coverage question |
SF Planning instructs users to search by address or Assessor's Block and Lot, then open Zoning Information. The Rent Board separately provides residential property information and Housing Inventory services. Save both results because they answer different questions. [2] [3]
Turn the tabs into a decision log
- Question: one sentence, such as “Which rent-increase rules apply to Unit 2 before a proposed change?”
- Source: agency, page title, URL, and the date you opened it.
- Property fact: the exact record relied on, with its document date.
- Finding: supported, contradicted, or unresolved.
- Next step: the missing record, agency inquiry, or legal review needed before acting.
This structure makes an old conclusion easy to recheck. A folder full of undated bookmarks does not show which property fact or version of a rule produced the answer.
San Francisco example: do not let zoning answer a rent question
Illustrative scenario: the file concerns Unit 2 in a four-unit San Francisco building. The Planning map supplies the block-and-lot number and permit leads. Record those facts, but do not label the unit rent controlled from that map. Open the Rent Board's coverage guidance and Housing Inventory portal separately, save the dated result, and list any missing tenancy or exemption documents. [2] [3]
A useful interim note is: “Property identity confirmed; local Rent Board record collected; unit coverage unresolved pending tenancy and exemption documents.” That sentence is more actionable than a guess because it shows exactly what is known and what still blocks the decision.
Recheck before a notice or rent decision
- Reopen the state and local pages instead of relying on a saved search snippet.
- Confirm the property and unit identifiers match every record.
- Separate statewide coverage, local coverage, and procedural notice questions.
- Keep the proposed action on hold while a material fact is unresolved.
- Use the relevant agency or qualified California housing counsel for a property-specific legal determination.
Sources
- Landlord-Tenant Issues — California Department of JusticeSource checked Sep 12, 2026.
- Find My Zoning — San Francisco PlanningSource checked Sep 12, 2026.
- Rent Board — City and County of San FranciscoSource checked Sep 12, 2026.
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