The Landlord Atlas Dataset

Everything this site publishes about state landlord-tenant law is generated from one dataset: 50 states × 5 topics (security deposits, rent increase notice, late fees, landlord entry notice, eviction process), every substantive claim traced to a statute citation and stamped with the date it was last verified against the official source. That dataset is downloadable here as versioned JSON — free to evaluate, with clear terms for production use.

Current release

Every page and record carries its own verified date, and they differ from page to page by design. A full pass over all 50 states runs quarterly; between those passes, individual topics are re-verified as laws change, so a state's eviction page may carry a newer date than the rest of that state's record. Separately, every statute page the dataset cites is checked each week for changes to its text. That weekly check is a watch, not a re-verification: it tells us when a source has changed so we can re-read it, and a page's verified date moves only after that re-read (what "verified" means).

Releases are explicit: the version and publish timestamp are set when a release is cut and verified live — never computed by a build — so /data/version.json always tells you precisely what is live as of when. A change to any legal figure always means a new version.

Downloads

What's in a record

Each state record covers the five topics field-by-field: statutory figures as typed values (integers, booleans, or explicit null where the state has no statute — a verified fact, not missing data), rule text in plain language, per-topic citations with official-source flags, plain-language summaries, labeled caveat notes, and verification dates. Each record also states the state's preemption posture for local rent regulation — preempted, not preempted, or no express statute, with a qualifier where the posture is conditioned — cited to statute and carrying its own verification date. Where local regulation operates, the dataset also carries locality records — city and county ordinances, state frameworks such as Connecticut's fair rent commissions and New York's opt-in stabilization system, and localities widely but wrongly claimed to regulate rents — each with its rent cap, coverage, vacancy and registration rules, and every current published figure stated with the period it applies to and the official source that published it. Every export wraps the record in a _meta block carrying the dataset version, publish timestamp, license, attribution, disclaimer, and the state's canonical page — so a record separated from its file still names its provenance.

Recent releases

• Version 1.19.0 · August 26, 2026 — Rental application and screening fee laws: twenty-four more states (36 of 50)
• Version 1.18.0 · August 25, 2026 — Seventh topic: rental application and screening fee laws — first 12 states
• Version 1.17.0 · August 24, 2026 — Pending-legislation flags gain machine-readable stage and date fields; one spent Colorado flag removed
• Version 1.16.0 · August 24, 2026 — Mobile home park and manufactured-housing community law: Wyoming and West Virginia complete the topic (all 50 states)
• Version 1.15.0 · August 23, 2026 — Mobile home park and manufactured-housing community law: twelve more states — Alabama, Arkansas, Georgia, Hawaii, Louisiana, Mississippi, Nebraska, North Carolina, North Dakota, Oklahoma, South Dakota and Tennessee (48 of 50)

Field-level detail for every change (which states, which topics, what moved) is in the machine-readable changelog.json. Human-readable change alerts are also the subject of the Law Alerts newsletter.

License & citation

The exports are free for evaluation use — download, test, prototype — under the Landlord Atlas Data License (Evaluation Tier): attribute Landlord Atlas, keep citations and verification dates with the data, and don't redistribute the dataset itself. Production use in a live product, redistribution, or the change-alert feed at scale takes a commercial license — email [email protected].

How the data is verified

Cited sources last checked for changes: August 26, 2026. Every statute page cited in the dataset is checked weekly for changes to its text, and tracked legislation is monitored on the same schedule. A detected change is then verified against the enacted text before any record is updated, and published to the changelog.

Direct reads of official statute text, per-claim citations, explicit treatment of statutory silence, and a logged change history — the full procedure is on the methodology page. The dataset is maintained on a standing cadence; it is not a one-time scrape.

Why maintenance cadence matters in this field: our August 2026 four-state accuracy review of two widely read landlord law reference sites found that neither reflected any of four recent statutory changes. The 50-state rent control preemption map shows what the dataset's preemption layer looks like tabulated.