US Building Permits Directory

Building permits in the United States are issued by local governments — not the federal or state government. That means the office you need depends entirely on where your project is located: a city, town, or county building department.

This directory covers 35,304 jurisdictions across all 50 states and Washington D.C. — with contact information, links, office hours where available and a brief description of how permitting works in that jursidiction. Select your state below to find the right permitting authority.

51 States + DC covered

35,304 Jurisdictions

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How US building permits work

The US has no national building permit system. Instead, each state delegates permitting authority to local governments — counties, cities, and townships — resulting in thousands of independent permitting offices nationwide. Some states mandate that all jurisdictions adopt a uniform code; others give localities complete autonomy over whether to require permits at all.

In general: if your project is inside city limits, the city building department issues the permit. If it is in an unincorporated area, the county handles permitting. Some states use townships or special districts as the permitting authority. Use this directory to find the correct office.

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Browse by state

Alabama67 counties, 593 cities Alaska30 counties, 355 cities Arizona15 counties, 467 cities Arkansas75 counties, 625 cities California58 counties, 1,618 cities Colorado64 counties, 482 cities Connecticut9 counties, 215 cities Delaware3 counties, 79 cities Washington, D.C.1 counties, 1 cities Florida67 counties, 955 cities Georgia159 counties, 675 cities Hawaii5 counties, 163 cities Idaho44 counties, 236 cities Illinois102 counties, 1,462 cities Indiana92 counties, 976 cities Iowa99 counties, 1,026 cities Kansas105 counties, 740 cities Kentucky120 counties, 554 cities Louisiana64 counties, 489 cities Maine16 counties, 155 cities Maryland24 counties, 523 cities Massachusetts14 counties, 248 cities Michigan83 counties, 745 cities Minnesota87 counties, 914 cities Mississippi82 counties, 427 cities Missouri115 counties, 1,082 cities Montana56 counties, 497 cities Nebraska93 counties, 593 cities Nevada17 counties, 133 cities New Hampshire10 counties, 100 cities New Jersey21 counties, 691 cities New Mexico33 counties, 527 cities New York62 counties, 1,289 cities North Carolina100 counties, 777 cities North Dakota53 counties, 406 cities Ohio88 counties, 1,265 cities Oklahoma77 counties, 846 cities Oregon36 counties, 426 cities Pennsylvania67 counties, 2,002 cities Rhode Island5 counties, 60 cities South Carolina46 counties, 475 cities South Dakota66 counties, 485 cities Tennessee95 counties, 504 cities Texas87 counties, 1,863 cities Utah29 counties, 334 cities Vermont14 counties, 179 cities Virginia133 counties, 688 cities Washington39 counties, 639 cities West Virginia55 counties, 439 cities Wisconsin72 counties, 807 cities Wyoming23 counties, 205 cities