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Permit rules by project type

20 common home projects, each mapped across 50 states. Pick a project to see how permit requirements differ by location.

Structures & additions

🏠

Accessory Dwelling Unit (ADU)

Backyard cottage, in-law suite, garage conversion
🚗

Garage / Carport

New detached or attached garage
🏗️

Room Addition

Expand the home footprint
🏘️

Roof Replacement

Re-roof with same footprint
💥

Demolition / Teardown

Remove an existing structure

Outdoor & yard

🪵

Deck / Porch

Raised or ground-level outdoor platform
🧱

Fence / Wall

Property-line barrier or privacy wall
🛖

Shed / Outbuilding

Storage shed, studio, or detached outbuilding
🅿️

Driveway / Parking Pad

New or expanded paved access
🏊

Swimming Pool / Spa

In-ground or above-ground pool
🧱

Retaining Wall

Grade-change structural wall

Mechanical systems

☀️

Rooftop Solar PV

Residential solar panel system
🌡️

HVAC Replacement

Furnace, AC, or heat-pump swap
🚰

Septic System

Install or replace a septic system
🔌

EV Charger

Home EV charging station
⚡

Standby Generator

Backup power generator install

Interior remodels

🪜

Basement Finish

Finish or remodel an existing basement
🍳

Kitchen Remodel

Cabinets, layout, plumbing & electrical
🛁

Bathroom Remodel

Fixtures, plumbing, ventilation
🪟

Window / Door Replacement

Swap windows or exterior doors

Pick your next step

Rules by state

See every project we cover for a single state.

Permit checker

Get a personalised go / no-go for your own project.

Printable permit checklists

The steps, documents and inspections in order.

Project x state matrix

Scan the whole grid before you commit.

Related tools from our network

A focused set of free calculators and guides across related topics — no account required.

Practical tools

Money & tax