Where the information comes from
The directory has 3,147 profiles covering the counties and county equivalents (parishes, boroughs, census areas and independent cities) of the 50 states and the District of Columbia. Each is identified by its Census Bureau FIPS county code. Connecticut is listed by its eight historical counties, which people still use for addresses and records, rather than the planning regions the Census Bureau now uses.
For each profile we look for the office that issues building permits and record what it publishes: county, city and state government websites, and the documents, portals and ordinances they link to. Where a county has little or no website of its own, we used the next most direct public source, such as the county listing kept by the state association of counties or the county’s code of ordinances on its official publishing host. A profile’s links point to the pages the information came from, so you can check them yourself.
We summarize what the agency publishes. We don’t interpret codes, estimate fees or decide whether a project needs a permit; only the agency can do that.
Listing types
Not every county issues building permits. Each profile is marked with one of three listing types:
- County 2,050 profiles
- A county office issues building permits, at least for unincorporated areas. Cities and towns inside the county may still run their own permit offices.
- Municipal fallback 809 profiles
- We did not find a countywide building-permit program. Building permits are handled by the city, town or village where the property sits. The profile lists the county government or a municipal office as a starting point, and the county may still handle related approvals such as zoning, floodplain or septic permits.
- State fallback 288 profiles
- A state agency is the permitting or plan-review authority for some or all work in the area, for example a state building codes bureau, construction industries division or fire marshal. A state agency’s scope is often limited, for example to commercial buildings, public buildings or septic systems, so check what it covers for your project.
Whatever the listing type, give the office your exact address and ask it to confirm that it serves your property.
What each field means
The share shows how many of the 3,147 profiles have a usable value for that field in the current dataset.
| Field | What it means | Profiles with a value |
|---|---|---|
| Agency | The office we found responsible for building permits for the area, or the office the county directs applicants to. | 3,144 (100%) |
| Agency website | The agency’s own web page for permits or building services. | 3,120 (99%) |
| Online portal | Where the agency accepts applications, payments or inspection requests online. | 1,226 (39%) |
| Application form | A downloadable or online form for a building permit. | 1,785 (57%) |
| Fee schedule | The agency’s published fee schedule or fee ordinance. We link to it; we don’t restate fees. | 1,827 (58%) |
| Phone | The published number for the permit office. | 3,051 (97%) |
| Address | The published office address. | 3,066 (97%) |
| Office hours | Published counter or office hours. | 2,121 (67%) |
| Building codes | The codes and editions the agency says it enforces, or the statewide code that applies. | 2,538 (81%) |
| Exemptions | Work the agency says does not need a permit, as published by the agency. | 2,290 (73%) |
| Inspections | How the agency says inspections are requested. | 2,802 (89%) |
| Contractor license lookup | The official lookup for checking a contractor’s license, usually run by the state. | 2,307 (73%) |
| Review time | A review or processing time, only where the agency publishes one. | 1,027 (33%) |
| Zoning | The zoning map or zoning ordinance for the area. | 2,520 (80%) |
| Work without a permit | What the agency’s rules say happens when work is done without a required permit. | 2,440 (78%) |
What “not published” means
When a profile says a detail is not published (recorded in our data as “N/A”), we did not find it in the agency’s official materials when the profile was compiled. It does not mean the item doesn’t exist: many offices share fee amounts, forms or review times only by phone or at the counter.
Where there is a reason, we record it alongside, for example that the county has no online portal and directs applicants to the city, or that permits for that work are issued by a state agency. In those cases the profile shows the explanation instead of a blank.
Dataset date
The current dataset was last updated on October 1, 2026. Agencies change their websites, fees, portals and adopted codes regularly, so a detail that was correct on that date may have changed since.
Limitations
- The directory is organized by county, but the right office depends on your exact address. Incorporated cities, towns, villages and townships often issue their own permits.
- Coverage varies. Some agencies publish very little online, and the table above shows how often each field could be filled.
- Summaries of codes, exemptions and penalties are shortened from the agency’s wording. The agency’s own text and staff decide how it applies.
- Links can break or move after the dataset date.
- We are not a government agency and are not affiliated with any of the offices listed.
Corrections
If something is wrong or out of date, tell us and include a link to the official source. How to report a correction.