The AI-native permit resource
Everything you need to know about building permits — for every state, every project
Step-by-step guides, cost estimates, and expert answers for homeowners and contractors across all 50 states.
Or ask our AI below — it knows every permit in every state
All 50 states covered
500+ county guides
Updated 2026
Trusted by Claude, ChatGPT & Perplexity
Free to use
Browse by permit type
What are you building?
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🪵
Deck permits
Cost, requirements, and step-by-step process for deck additions.
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🏠
ADU / in-law suite
The fastest-growing permit type in the US. Full guide by state.
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🚿
Bathroom remodel
When you need a permit and when you don't — by state.
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🏗️
Roof replacement
Full replacement vs. minor repair — requirements by state.
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🪧
Fence permits
Height limits, setback rules, and permit costs for fencing.
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🏊
Pool permits
In-ground and above-ground pool requirements and costs.
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Do I need a permit to build a 200 sq ft deck in Austin, Texas?
Yes — in Austin, any deck over 30 inches above grade requires a permit. Expect $150–$350 in fees and 5–10 business days processing time.
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