Awaiting expert review. This page covers safety or regulatory rules that change over time. It is kept out of search results until a qualified reviewer has checked it; the sources below are dated so you can verify each point.
Quick answer
A building permit is an official document from the local building department that authorizes specific construction work, such as building, altering, repairing or demolishing a structure, and requires that work to be inspected against the adopted building code.
It is tied to one address, one scope of work and one code edition. The owner or the owner’s agent applies, and the permit stays open until the work passes its final inspection.
Quick facts
The key facts about Building Permit, with sources:
- Issued by
- The local building official, under the code the jurisdiction adopted 1
- Who applies
- The owner or the owner’s authorized agent, often the contractor 1
- Separate trades
- Electrical, gas, mechanical and plumbing work also need permits 1
- Exempt finish work
- Painting, papering, tiling, carpeting, cabinets and countertops (model code) 1
- Expires
- If work does not start within 180 days or stalls 180 days between inspections 1
- Fee based on
- Valuation of the work, including materials and labor 1
Key takeaways
- A building permit is written approval to do specific work, plus a promise that the work will be inspected.
- The model code requires a permit to build, alter, repair, move, demolish or change the use of a building, with listed exemptions.
- Finish work like painting, tile, cabinets and countertops is exempt in the model code, but local rules can differ.
- Cutting walls, beams or load-bearing supports, or changing plumbing, wiring or gas, is not exempt.
- The permit is not the same as zoning, HOA or historic approval; those are separate.
What a building permit is, in plain English
A building permit is the building department’s written OK for a specific job. It says what work is allowed, at which address, under which code, and it sets up inspections so an inspector can check the work before it is covered up.
The 2021 International Residential Code (IRC) defines a permit as an official document or certificate issued by the building official that authorizes performance of a specified activity 2.
Section R105.1 sets when one is needed: anyone who intends to construct, enlarge, alter, repair, move, demolish or change the occupancy of a building, or to install or change any electrical, gas, mechanical or plumbing system the code regulates, must first apply and obtain the permit 1.
The code’s own words help sort remodeling work. An alteration is construction or renovation to an existing structure, other than a repair or addition, that requires a permit 2.
An addition increases floor area, stories or height 2. A repair is reconstruction or renewal of part of a building for maintenance or to correct damage 2. Most remodels are alterations, and many include additions.
This page covers what a permit is and which kinds exist. For how to apply, how long plan review takes and what happens at each inspection, see our remodeling permits and approvals guide.
How a permit works as a legal tool
A permit is more than a fee receipt. In the model code it creates a set of duties for the permit holder and powers for the building official.
- A permit describes the work. The application must identify and describe the work, the address, the use, and the valuation of the work 1.
- It approves documents. Plans reviewed for a permit are stamped and must be kept on site; changes during work must be resubmitted 1.
- It must be posted. The permit or a copy stays on the job site until completion 1.
- It triggers inspections. Work may not continue past each inspection point, or be covered, until approved 1.
- It can lapse or be revoked. It becomes invalid if work does not start within 180 days or more than 180 days pass between inspections, and it can be revoked if issued on wrong information 1.
- It does not approve violations. The model code is explicit that a permit is never approval of any code violation 1.
- ApplicationScope, address, use and valuation
- Plan reviewDocuments checked against the code
- Permit issuedPosted on site; clock starts
- InspectionsEach stage approved before it is covered
- Final and closedWork approved; certificate where required
The full process, with timing and common pitfalls, is on our permits and approvals guide. Source: [1]
Types of permits a remodel may need
| Permit | What it covers | Model code basis |
|---|---|---|
| Building permit | Structure, framing, walls, roofs, windows, additions, alterations | IRC R105.1 1 |
| Electrical permit | New or changed wiring, circuits and equipment | IRC R105.1; exemptions in R105.2 1 |
| Plumbing permit | New or replaced piping, fixtures and drains | IRC R105.1; leak repairs exempt in R105.2 1 |
| Mechanical permit | Heating, cooling, ventilation and ducts | IRC R105.1 1 |
| Gas permit | Gas piping and fixed gas appliances | IRC R105.1 1 |
| Demolition permit | Removing a structure or major part of one | IRC R105.1 lists “demolish” 1 |
| Zoning or planning approval | Use, setbacks, height and lot coverage | Local zoning ordinance; not the building code |
Example: does the model code require a permit for these jobs?
The model code answers these permit questions through the 2021 IRC exemption list in Section R105.2 and the repair limits in R105.2.2 1. They show how the model code sorts work. Your jurisdiction may have amended the list, so treat this as a starting point, not a ruling.
| Job | Model-code answer | Why |
|---|---|---|
| Replace kitchen cabinets and countertops | No permit for that work alone | Cabinets, counter tops and similar finish work are exempt 1 |
| Re-tile a bathroom floor | No permit for the tile | Tiling is listed finish work 1 |
| Move a sink to a new wall | Permit needed | Rearranging piping is not an ordinary repair 1 |
| Open a load-bearing wall between kitchen and dining room | Permit needed | Cutting away a wall or a load-bearing support is not an ordinary repair 1 |
| Swap a worn receptacle in the same box | No permit | Reinstalling receptacles, but not new outlets, is exempt 1 |
| Build a detached 160 sq ft shed | No building permit | One-story detached accessory structures up to 200 sq ft are exempt 1 |
| Build a 150 sq ft deck 24 in above grade, not attached | No permit | Decks up to 200 sq ft, under 30 in high, unattached and not serving the required exit door are exempt 1 |
- 200 sq ftLargest exempt detached one-story accessory buildingIRC R105.2
- 30 inDeck height above grade under which small decks can be exemptIRC R105.2
- 180 daysA permit lapses if work does not start, or stalls between inspectionsIRC R105.5
- 7 ftHighest fence that is exemptIRC R105.2
Source: [1]
Two caveats apply. An exemption from a permit is never permission to break the code 1. And a bundled job is judged as a whole: a kitchen with new cabinets plus a moved sink and new circuits needs permits for the plumbing and electrical. Our permit checker walks through your own job.
Where the permit shows up: contract, job site and property records
In the contract: California’s contractor board advises that a contract should state, among other things, who gets the necessary building permits 5. Many contracts make the contractor responsible and list the permit fee as a line item.
On the job site: The permit card or a copy must be kept on site until the job is done 1. Inspectors sign or record each approval.
In public records: Building departments keep records of applications, permits and inspection reports 1. Buyers, appraisers and insurers sometimes check those records against the house.
In the fee: The permit application states a valuation of the work 1, and many jurisdictions base the fee on it.
The ICC publishes Building Valuation Data that jurisdictions use as a benchmark for setting fees, updated twice a year 4.
Our study of remodeling permit fees by city shows how far fees vary for the same job.
Get the permit number in writing
Ask your contractor for the permit number before work starts and look it up on the building department’s site. It is the simplest check that the job is permitted in the scope you agreed to.
What a permit gives you, and what it costs you
What you get
- An independent inspector checks structure, wiring, plumbing and fire safety before they are hidden.
- A public record that the work was approved, useful when you sell or insure the home.
- A clear scope: approved documents fix what is being built 1.
- A built-in check: a contractor cannot cover failed work until it passes 1.
What a permit does not do
A permit is not a quality guarantee. Inspectors check for code minimums at set stages. They do not check finish quality, match your design, or verify that the contractor followed your contract.
A permit does not replace other approvals. Zoning, historic district, homeowners association and utility approvals are separate. A permit also does not make a contractor licensed or insured; check those yourself, for example with our contractor insurance requirements research.
A permit does not protect you if it lapses. In the model code it becomes invalid after 180 days without work starting or between inspections, unless extended in writing 1.
What drives permit fees and how long a permit lasts
We do not quote permit fees here; each jurisdiction sets its own schedule 1. The drivers are consistent.
Most fee schedules start from the valuation of the work, which in the model code includes the total value of the work, including electrical, gas, mechanical and plumbing equipment, materials and labor 1.
Some add plan review fees, separate trade permit fees, and charges for re-inspections.
Starting work before a permit is issued can cost more. The model code lets the jurisdiction charge an extra fee, on top of the normal permit fee, for work begun before permits were obtained 1.
As for life span, a permit is time-limited. Under the model code it lapses if work does not begin within 180 days of issue, or if more than 180 days pass between inspections; extensions of up to 180 days each may be granted in writing 1.
Who handles the permit, at a glance
The detailed process lives on our permits guide. Here is who does what.
- The owner or the owner’s agent, usually the contractor, applies 1.
- A registered design professional prepares documents where state law or the building official requires it 1.
- The building official reviews documents and issues or rejects the application in writing with reasons 1.
- The permit holder calls for inspections and gives the inspector access 1.
- The building official approves each stage, and the final inspection happens when work is complete and before occupancy 1.
For the timing, the paperwork and the common mistakes, see the permits guide linked above. To see how permit time fits your whole schedule, try the remodeling timeline tool.
Keeping your permit records in order
A permit has no physical upkeep, but its paperwork is worth keeping for the life of the house.
- Keep the permit, approved plans and final sign-off with your home records.
- Confirm the permit is closed, not just inspected once; an open permit can surface at sale.
- Save inspection results for each stage, including any corrections.
- Keep product data, such as window labels and fixture specs, that inspectors relied on.
Risks of unpermitted work, and warning signs
- A contractor asks you to pull the permit in your own name for work they will do. That can shift legal responsibility to you.
- A bid says a permit "isn’t needed" for work that moves plumbing, wiring or walls.
- Walls get closed before an inspection you expected.
- The permit lapses because work stalled more than 180 days between inspections 1.
- Work starts before the permit is issued, which can bring an extra fee 1.
Structural, electrical and gas work
Do not start any work that cuts walls or beams, changes wiring or panels, or alters gas piping without a permit and qualified, licensed trades. These are the jobs where hidden mistakes cause fires, gas leaks or structural failure, and the model code does not treat them as ordinary repairs 1.
Unpermitted work may need to be opened for inspection later, and the building official can issue stop-work orders. If you find old unpermitted work, ask the building department how it handles permits for existing work.
The rules behind permits: IRC, IEBC and local adoption
2021 IRC Chapter 1. R105.1 requires permits; R105.2 lists exempt building, electrical, gas, mechanical and plumbing work; R105.2.2 limits what counts as an ordinary repair.
R105.3 sets what an application must contain, including valuation; R105.5 sets the 180-day expiration; R105.7 requires the permit on site; R108 covers fees; R109 inspections; R110 the certificate of occupancy 1.
2021 IEBC. For existing homes, many jurisdictions also use the International Existing Building Code, which classifies work as repair, Level 1, 2 or 3 alteration, change of occupancy or addition.
Level 2 includes adding or removing a door or window and reconfiguring systems where the work area is half the building or less; Level 3 applies above half 3.
Local adoption. The IRC is a model code. It only has legal force where a state or city adopts it, and Chapter 1 administrative rules are often rewritten locally.
Fees, exemptions and time limits on your permit come from your jurisdiction. This page is held for review by a building official or ICC-certified inspector before it is indexed.
Building permit vs related approvals
| Approval | Who issues it | What it decides |
|---|---|---|
| Building permit | Building department 1 | Whether planned work may proceed under the code |
| Zoning or planning approval | Planning department | Whether the use, size and placement are allowed on the lot |
| Rough-in inspection | Building inspector | Whether concealed systems pass before walls close 1 |
| Certificate of occupancy | Building official | Whether a building or part of it may be used 1 |
| HOA approval | Homeowners association | Whether the project meets private covenants |
| Contractor license | State or local licensing board | Whether the contractor may legally do the work |
Common permit myths
- Myth Interior work never needs a permit.
- Reality Moving walls, plumbing, wiring or gas lines needs one under the model code, inside or out 1.
- Myth If the work is exempt, the code does not apply.
- Reality The IRC says an exemption is not permission to break the code 1.
- Myth A permit means the job was done well.
- Reality Inspectors check code minimums, not finish quality or your contract.
- Myth HOA approval covers the permit.
- Reality HOA and building approvals are separate; you may need both.
- Myth Permits last forever once issued.
- Reality In the model code they lapse after 180 days without work or between inspections 1.
Why your permit rules depend on where you live
Every rule on this page comes from the model code; the binding version is the one your state or city adopted, with its amendments. Jurisdictions change the exemption list, the fee schedule and the time limits, and they decide which trade permits are bundled.
Fees in particular vary widely for the same job, which is why our research compares them city by city. Some states also require the contractor to hold a license before pulling a permit, which varies by state.
When a permit affects your remodel decisions
Assume a permit is needed whenever a job moves or adds plumbing, wiring, gas, ducts, walls, windows or doors, or adds space. Plan for it in both time and budget. If your job is only finish work, check whether your jurisdiction kept the model-code exemptions.
Put permits in the contract: who applies, who pays, and that the final inspection must pass before final payment. Our guide to remodeling contracts covers how to tie payments to inspections.
- If Only paint, tile, flooring, cabinets or countertops
- Then Likely exempt in the model code; confirm locally
- If Moving plumbing, wiring, gas or ducts
- Then Trade permits are needed
- If Cutting walls, beams or adding windows
- Then A building permit is needed, often with plans
- If Adding square footage
- Then Building permit plus zoning review
Questions about Building Permit
What work requires a building permit?
Under the 2021 IRC, you need a permit to construct, enlarge, alter, repair, move, demolish or change the use of a building, and to install or change electrical, gas, mechanical or plumbing systems.
The code lists exemptions such as painting, tiling, cabinets and countertops. Your local building department has the final list, since it may amend the model code.
Do I need a permit to remodel a kitchen?
Often, yes, but it depends on the scope. Replacing cabinets and countertops alone is exempt finish work in the model code. Moving a sink, adding circuits, changing gas lines, venting a range hood outside, or removing a wall all need permits. Most full kitchen remodels include at least one of those.
Who is responsible for getting the building permit?
The model code lets the owner or the owner’s authorized agent apply. In practice, the contractor usually pulls the permit, and the contract should say so. Be cautious if a contractor asks you to pull it in your own name for work they are doing, because that can make you responsible for code compliance.
How long is a building permit good for?
In the 2021 IRC, a permit becomes invalid if work does not begin within 180 days after it is issued, or if more than 180 days pass between inspections. The building official may grant written extensions of up to 180 days each. Your jurisdiction may set different time limits.
What is the difference between a building permit and a zoning permit?
A building permit checks whether the work meets the construction code: structure, fire safety, plumbing, wiring and energy. Zoning approval checks whether the project fits land-use rules, such as setbacks, height and lot coverage. An addition often needs both, from two different departments.
How are building permit fees calculated?
Each jurisdiction sets its own fee schedule. Many base it on the valuation of the work, which the model code says includes materials and labor for all permanent systems. The ICC publishes building valuation data that jurisdictions use as a benchmark. Plan review, trade permits and re-inspections can add fees.
What happens if you remodel without a permit?
The building official can issue a stop-work order, and the jurisdiction may charge an extra fee for work begun before permits.
Unpermitted work can also surface when you sell, refinance or file an insurance claim, and you may need to open walls so it can be inspected. Ask your building department how it handles permits for completed work.
Does a permit guarantee the work is good quality?
No. Inspectors check that work meets the code’s minimum safety standards at set stages. They do not judge finish quality, check that the job matches your contract, or warranty the work. Your contract and contractor warranty cover quality; the permit covers code compliance.
Is a building permit needed to replace windows?
Often, yes. Many jurisdictions require a permit to replace windows, and the 2021 IECC requires replacement windows to meet energy ratings. Enlarging an opening or adding a window changes the wall structure and needs a permit. Some places exempt same-size replacements, so check locally.
Sources
- ICC, 2021 International Residential Code, Chapter 1 Scope and Administration (R105–R110), retrieved .
- ICC, 2021 International Residential Code, Chapter 2 Definitions (permit, alteration, addition, repair), retrieved .
- ICC, 2021 International Existing Building Code, Chapter 6 Classification of Work, retrieved .
- International Code Council, Building Valuation Data, retrieved .
- California Contractors State License Board, What Should I Look for in a Contract and Binding Agreements?, retrieved .
Expert review
Written by the HyreRemodel Research team. Not yet reviewed by an outside expert. We say so rather than imply a review that has not happened; see our editorial policy.
How the numbers were checked: Permit requirements, exemptions, application contents, valuation, fees, time limits, inspections and certificates were read from 2021 IRC Chapter 1, and definitions from Chapter 2, on ICC Digital Codes.
Work classification for existing buildings is from 2021 IEBC Chapter 6. The fee benchmark note is from ICC’s Building Valuation Data page; the contract advice from California’s CSLB.
The example table applies the model-code exemption list and is not a local ruling. Held noindex until a building official or ICC-certified inspector reviews it. No fees or prices are given.
Suggest a correction. We fix errors and say what changed.