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Home improvement permits, explained plainly.

Not sure whether your project needs a permit? We break down the requirements for 15 common home improvement projects: what a permit costs, how to apply, and what happens if you skip one.

Browse permit guides

What is a building permit?

A building permit is an official approval from your local government that authorizes you to proceed with a construction or renovation project. Permits ensure that work meets safety standards, building codes, and zoning regulations.

Building permits are issued by your local building department, typically at the city or county level. Most jurisdictions offer online permit applications. Search for '[your city] building department permits' to find your local office.

Why permits matter

  • Ensures work meets safety standards and building codes
  • Protects your home's value and insurability
  • Required for legal property sales: unpermitted work must be disclosed
  • Provides legal protection through documented inspections
  • Ensures structural integrity, fire safety, and proper electrical/plumbing installation

The general permit process

1

Determine if your project requires a permit by contacting your local building department

2

Prepare your application with project plans, descriptions, and contractor information

3

Submit the application and pay the permit fee

4

Wait for plan review and approval

5

Begin work after receiving the permit and display it on-site

6

Schedule required inspections during and after construction

7

Receive final approval and close the permit

Permit guides for every job

Pick your project to see when a permit is required, what it costs, how to apply, and the answers to the questions homeowners ask most.

Bathroom Remodel

Yes, most bathroom remodels that involve plumbing, electrical, or structural changes require a building permit.

Permit cost: $50 - $1,500

Kitchen Remodel

Yes, most kitchen remodels require permits, especially when plumbing, electrical, gas lines, or structural elements are involved.

Permit cost: $100 - $2,000

Deck Building

Yes, building a new deck almost always requires a permit. Even replacing an existing deck may require one depending on size and your local codes.

Permit cost: $75 - $1,000

Fence Installation

It depends on your location and fence height. Many jurisdictions require permits for fences over 6 feet, and some require them for any fence.

Permit cost: $20 - $400

Electrical Work

Yes, almost all electrical work beyond simple fixture replacements requires a permit. Electrical permits are among the most strictly enforced.

Permit cost: $25 - $500

Plumbing Work

Yes, most plumbing work that involves new pipes, rerouting supply or drain lines, or adding fixtures requires a plumbing permit.

Permit cost: $50 - $500

Roofing

Yes, most jurisdictions require a permit for roof replacement. Even a re-roof over existing shingles typically needs a permit.

Permit cost: $100 - $500

Basement Finishing

Yes, finishing a basement requires permits. You will typically need building, electrical, and plumbing permits, plus egress window compliance.

Permit cost: $200 - $2,000

Room Addition

Yes, a room addition always requires permits. You will need building, electrical, plumbing (if applicable), and potentially zoning approval.

Permit cost: $500 - $5,000+

Garage Conversion

Yes, converting a garage into living space requires building permits and must comply with zoning and parking requirements.

Permit cost: $300 - $3,000

Window Replacement

It depends. Replacing windows with the same size and type usually does not require a permit, but changing window size, adding new windows, or structural modifications do.

Permit cost: $25 - $300

Water Heater

Yes, replacing a water heater requires a permit in most jurisdictions, even if you are installing the same type in the same location.

Permit cost: $25 - $250

HVAC Replacement

Yes, replacing an HVAC system requires a mechanical permit in most jurisdictions, even for a like-for-like replacement.

Permit cost: $100 - $500

Demolition

Yes, demolition of any structure typically requires a permit. Full building demolition has extensive requirements including utility disconnection and hazardous material testing.

Permit cost: $100 - $2,500

Swimming Pool

Yes, installing a swimming pool always requires permits. Pools have extensive requirements including fencing, electrical, plumbing, and zoning compliance.

Permit cost: $200 - $3,000

Rather have a pro handle the permits?

Find licensed professionals in your area who pull permits, schedule inspections, and keep your project up to code.

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