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Permit history lookup
General info only. Check with a licensed pro and your local building department.
Before you buy a house or hire someone, see what work was permitted at an address.
Official ways to look it up
- Denver: search the address in Denver's official permit system, Denver Accela Citizen Access. Denver also publishes Residential Construction Permits and Commercial Construction Permits as free open data (catalog).
- Aurora: the city publishes Building Permits (last 6 months) on its official open data server (Aurora open data).
- Other cities: start at our permit guides and ask the building office.
Prototype: search a sample
Prototype — may be stale. This searches a copy we downloaded on 2026-10-30: the 2,000 most recent Denver residential permits (issued 2026-05-04 to 2026-10-29). Older permits and most addresses are not in it. "No results" does not mean no permits — always confirm with the official search above. Your search stays in your browser.
| City | Permit | Issued | Address | Type | Status |
|---|
Sources
| Topic | What the source says | Source |
|---|---|---|
| Denver residential permits | Open dataset of Residential Construction permits (type RESCON) extracted from the Accela database and mapped daily; 79,927 records on 2026-10-30. Some permit locations may be unknown. | Official page checked 2026-10-30 |
| Denver data service | Official feature service used for the sample download (fields incl. permit number, date issued, address, class, valuation, contractor name, final date). | Official page checked 2026-10-30 |
| Denver commercial permits | Open dataset of Commercial Construction permits. | Official page checked 2026-10-30 |
| Denver permit search | Official Accela Citizen Access portal for Denver permits. | Official page checked 2026-10-30 |
Data credits
Denver permit data: City of Denver Open Data Catalog, licensed CC BY 3.0. The City of Denver provides its data "as is" with no warranty; it is not for engineering use. We changed the data only by picking recent residential permits.
Unknowns
- Aurora permit data is not shown here because its republishing rights are Unknown; use Aurora's own site linked above.
- Whether Aurora has a public address search for older permits (beyond the 6-month layer and layer 44) — Unknown.
- Lakewood, Arvada, Westminster, Thornton, Englewood and other cities — not researched (left for later).
- How "status" and "final date" map to a passed final inspection — Unknown; ask the building office.