There is no single national U.S. building permit search that contains every local record. Start with the city or county that issued permits for the property, then choose the source that matches the record’s age and type: a current permit portal, a legacy system, a scanned-record archive, or the agency’s records office. Search the same property with its official address and a stable identifier such as a parcel number, APN, BIN, or permit number when one is available.
Last checked: July 22, 2026. This page is a route to official sources, not a national permit database. Portal names, coverage dates, and record-request procedures change, so confirm the scope shown on the government page before treating a blank result as evidence that no permit exists.
Find the issuing jurisdiction before choosing a portal
A mailing city is not always the government that issued the permit. A property inside an incorporated city may be handled by that city’s building department, while an address in an unincorporated area may be handled by the county. Special districts can keep separate fire, septic, electrical, or other records.
- Confirm the property address and whether it sits inside city limits.
- Identify the city or county building, planning, or development-services department.
- Open the department page from the government’s own domain, not from a directory advertisement.
- Read the portal’s coverage statement before searching.
If you do not know the local government, begin with the USA.gov local governments directory. It organizes official local-government contacts by state. It does not search permits for you; it helps you reach the government that can identify the correct records office.
Match the record to the source that actually holds it
Building departments often moved from paper to microfilm, then to one or more online systems. A newer portal may show current applications but omit older permits. Use the source description to decide where the search belongs.
- Current permit portal: Use it for recent applications, issued permits, inspections, and status updates. Check the launch date, included permit types, and whether public access requires an account.
- Legacy permit system: Use it for records created before the current system launched. Check its cutoff date, address format, and whether it excludes newer filings.
- Scanned archive or microfilm index: Use it for older permits, plans, cards, and certificates not converted to the main portal. Check the available years and how to order a legible copy.
- Open-data catalog: Use it to filter or export many public records. Check the refresh date, omitted fields, and which agency system remains authoritative.
- Records request: Use it for files that are not published online. Define the request scope and check fees, delivery method, and privacy or legal restrictions.
Official examples show why one directory link is not enough
The examples below are not interchangeable national portals. Each one shows a different way that a local government divides its records.
- New York City – NYC DOB Find Building Data: DOB tells researchers to use BIS for older filings and DOB NOW for filings submitted in the newer system. Some searches need both.
- Los Angeles – DBS online building records: The city describes permit, certificate, and trade-record coverage, plus a records route for material not available as an online PDF.
- Seattle – SDCI Research a Project: The city separates current portal records from older permit and property-record resources by date and record type.
- Chicago – permit application status help: The official help page explains that an application number can return more detail than an address and that the tool has a stated time window.
New York City’s split is especially useful as a warning against stopping after one blank result. The DOB NOW Public Portal FAQs state that the public portal shows DOB NOW filings while filings made through the older channels remain in BIS. The agency also points to open data as another way to view address-related filings.
Search with stable property and record identifiers
Address text is convenient but fragile. Street suffixes change, buildings have multiple entrances, units are omitted, and old records may use a former number. Save every identifier the official source gives you.
- Official street address: use the spelling and jurisdiction shown by the local property or assessor source.
- Parcel identifier: this may be called a parcel number, APN, PIN, tax lot, block and lot, or another local name.
- Building identifier: some cities use a separate building number, such as New York City’s BIN.
- Permit, job, or application number: use this to reopen the exact record and distinguish related filings.
- Contractor or applicant: use only as a secondary filter because names and business entities can change.
Read the result as a chain, not as a single permit row
A permit search result can contain an application, plan review, an issued permit, separate trade permits, inspections, corrections, extensions, and a completion document. The presence of one row does not prove that the work passed final inspection.
- Open the application or job record and confirm the property and work description.
- Check whether a permit was actually issued and note its issue and expiration dates.
- Look for linked electrical, plumbing, mechanical, fire, or other trade permits.
- Review inspection results and unresolved corrections.
- Find the final inspection, letter of completion, certificate of occupancy, or local equivalent.
- Save the official record URL, identifiers, and the date you checked it.
If no permit appears, change the search before drawing a conclusion
A blank screen is not a reliable no-permit finding until you have checked the portal’s limits. Try the parcel or building identifier, remove the unit number, test an older address, and search the legacy system. Check whether electrical, plumbing, fire, septic, or planning records live in another department. For an old property, ask the records office about paper files, microfilm, permit cards, or a formal public-records request.
Record absence also does not prove that work was unpermitted. A filing may be indexed under another address, recorded in a system that is not online, exempt from the permit type you searched, or restricted from public display. Record what you searched and ask the issuing authority a narrow question.
What an official permit record does not prove
- That the work matches the approved plans or present condition
- That every required trade permit was issued
- That the permit received final approval or closeout
- That the property has no current violations or unsafe conditions
- That online records are complete for every year
Use the record as one piece of due diligence. For a purchase, renovation, insurance decision, or legal dispute, confirm the result with the building department and the qualified professionals handling the property.
Continue with the lookup that matches your evidence
Use the permit lookup by address guide when you have only a street address. Use building permit history by address when the property has changed names or numbers. For records that predate the current portal, continue with the old building permit lookup.
Questions about official building permit sources
Is there one U.S. database for every building permit?
No. Building permits are primarily administered by local governments, and each jurisdiction sets its own systems, coverage, and request process.
Why does the official portal show no result for my address?
The address may be outside that jurisdiction, indexed under another form, stored in a legacy or paper archive, or covered by a separate trade-permit system. Check the portal’s stated coverage before concluding that no record exists.
Is an address or permit number better?
Use the address to discover records, then save the permit, job, application, parcel, or building number. Those identifiers are usually more reliable when you return to the record.
Do I need both a current and an old portal?
Sometimes. NYC DOB explicitly directs users to both BIS and DOB NOW for different filing groups, and other cities also divide current and historical records by system or date.
Sources checked July 22, 2026: USA.gov; New York City Department of Buildings; Los Angeles Department of Building and Safety; Seattle Department of Construction and Inspections; City of Chicago. Verify the current scope on the issuing agency’s page.