Building Permit Requirements by City
Find out if you need a building permit for your next home improvement project. PermitRules covers residential permit requirements for 8 project types across 50+ cities in 30 states, with specific rules for size thresholds, setback distances, permit fees, and step-by-step application guides.
How PermitRules Works
Every city in the United States sets its own building permit rules. What is allowed without a permit in Austin, Texas may require a full building permit in Chicago, Illinois. The size threshold for a shed permit ranges from 100 square feet in some cities to 200 square feet in others. Fence height limits, deck attachment rules, pool safety requirements, and ADU regulations all vary by municipality.
PermitRules compiles this information from official city building department websites, municipal codes, and published government documents so you can quickly find the rules for your specific city and project type. Each permit page includes whether a permit is required, the size threshold that triggers a permit, setback distances from property lines, typical permit fee ranges, and a step-by-step application guide.
We cover sheds, decks, fences, pools, garages, pergolas, hot tubs, and ADUs (accessory dwelling units). Select your state and city below, or use our guides to understand permit rules by project type.
Popular Permit Searches
- Shed Permit in Austin, Texas — 200 sq ft threshold
- Deck Permit in Miami, Florida — Required for most decks
- Pool Permit in Los Angeles, California — Always required
- Fence Permit in Chicago, Illinois — Over 6 ft requires permit
- Deck Permit in Seattle, Washington
- Shed Permit in Louisville, Kentucky — 120 sq ft threshold
- Pergola Permit in San Diego, California
- ADU Permit in Atlanta, Georgia
Do You Need a Building Permit?
The answer depends on your city and what you are building. Here are the general rules that apply in most U.S. cities:
- Sheds: Most cities allow sheds under 100-200 sq ft without a permit. Larger sheds require a permit. Shed permit rules →
- Decks: Attached decks and decks over 30 inches above grade almost always require a permit. Deck permit guide →
- Fences: Backyard fences under 6 feet usually do not need a permit. Front yard and tall fences often do. Fence permit rules →
- Pools: Swimming pools require a permit in virtually every city, plus electrical and plumbing permits. Pool permit guide →
- Pergolas: Depends on whether the pergola has a solid roof and is attached to the house. Pergola permit guide →
- Garages, Hot Tubs, ADUs: Requirements vary widely by city. Find your city →
Even when a permit is not required, setback rules still apply — your structure must maintain minimum distances from property lines. Building without a required permit can result in fines of $200-$10,000, forced demolition, and complications when selling your home.
Permit Guides by Project Type
- Complete Building Permit Guide — When permits are required, costs, and the application process
- Shed Permit Rules — Size thresholds by city, setback rules, and fees
- Deck Permit Requirements — Attached vs freestanding, inspections, and costs
- Fence Permit Requirements — Height limits, front vs back yard, and HOA rules
- Pool Permit Requirements — Safety barriers, multiple permits, and timelines
- Pergola Permit Requirements — Open rafter vs solid roof, attached vs freestanding
Latest from the Blog
- How close to the property line can you build a shed?
- What size shed can you build without a permit?
- Do you need a permit to build a fence?
- Do you need a permit for a hot tub?
- Do you need a permit for a pergola?
- HOA rules vs city building permits
- View all blog posts →
Browse by State
We cover building permit requirements in 30 states including California, Texas, Florida, New York, Illinois, Georgia, Pennsylvania, Ohio, Michigan, and more. Each state page lists all covered cities with links to specific permit requirements for sheds, decks, fences, pools, garages, pergolas, hot tubs, and ADUs.