Tearing something down feels simpler than building it.
In permit terms, it often is not. Demolition permits exist because a teardown touches utilities, sewer connections, asbestos, neighbors, and sometimes historic or housing policy. Whether you are removing a whole house, a detached garage, or an old shed, it pays to know the rules first.
This guide covers when a demolition permit is needed, the steps most cities require before issuing one, and the special rules some cities add. Rules are local, so confirm with your AHJ (authority having jurisdiction). See our disclaimer.
Quick answer
- Whole house: a demolition permit is required almost everywhere.
- Detached garage or accessory building: usually a demolition permit, especially if it has utilities or a slab.
- Small shed: often exempt if it has no utilities and is below the local size limit, but check.
- Partial demolition during a remodel is usually covered by the remodel permit, though removing most exterior walls can be treated like a full demolition.
The steps most cities require
- Asbestos survey. Older homes may contain asbestos in flooring, siding, insulation, or ducts. Many cities require an asbestos survey before issuing a demolition permit. Portland, for example, requires "the Site Controls Form, asbestos survey, and close-out letter" before the permit can be issued. The U.S. EPA also notes that, for demolitions covered by federal asbestos rules, structures "must be thoroughly inspected for the presence of asbestos" first, and that state and local rules may apply as well.
- Utility disconnects. Gas, electric, and water must be shut off and disconnected by the utilities, with proof submitted.
- Sewer capping. The sewer lateral usually must be capped at the property line and inspected. Portland: "you must cap the sewer as part of the demolition permit." Septic systems need a decommissioning permit.
- Site plan and erosion control for larger demolitions.
- Notices and waiting periods in some cities (see below).
Minneapolis calls this a wrecking permit and puts it at the start of its remodel and new-home process when an existing structure has to come down; see our Minneapolis building permits guide.
Special rules in some cities
| Rule | Example |
|---|---|
| Waiting period before demolition | Portland applies a 35-day delay for one- or two-family dwellings in residential areas, which can be extended by up to 60 days on appeal. |
| Neighbor notification | Portland mails notice within 150 feet and requires door hangers on properties within 300 feet. |
| Deconstruction instead of demolition | Portland requires certified deconstruction for houses and duplexes built in 1940 or earlier, so materials can be salvaged. |
| Historic review | Many cities review demolition of older or historic buildings before issuing a permit. |
Source: Portland residential demolition permits. Austin and Seattle publish their own requirements; see Austin demolition permits and Seattle demolition of housing.
Partial demolition vs full demolition
Gutting a kitchen or removing an interior wall is part of a remodel permit (see removing a load-bearing wall). But large remodels can cross into demolition territory. Portland treats removing 50% or more of exterior walls as a major alteration with its own notification rules. If your "remodel" leaves only a foundation and a wall or two, ask whether it counts as demolition and new construction.
Sheds and small structures
Many cities exempt small sheds from building permits when they are built (see shed permit requirements). Removing one is often exempt too, but if the shed has electrical wiring or plumbing, those need to be safely disconnected, which may require a trade permit. Detached garages with slabs, wiring, or sewer connections usually need a demolition permit.
Removing an in-ground pool is its own demolition job; see in-ground pool removal permits.
After demolition
- Final inspection of the cleared site, capped sewer, and erosion control
- Updated property records (a demolished house changes the tax assessment)
- A new building permit for whatever replaces it (see how to apply for a building permit)
How three more cities handle a house demolition
Portland isn't the only city with extra steps. Austin, Los Angeles and Seattle each add their own, and comparing them shows what to ask your city about:
| City | Notable requirements |
|---|---|
| Austin, TX | Pre-demolition inspection and notice to adjacent homes for total demolitions and partial demolitions removing more than half the exterior walls. Homes 45 years or older go to the Historic Preservation Office. A refrigerant disposal acknowledgment is required, and demolition can start only after a notification window of at least five days (source) |
| Los Angeles, CA | For buildings whose original permit is more than 45 years old, the city sends written notice to abutting owners and occupants and the applicant posts a "Notice of Demolition" placard within 5 feet of the front property line, at least 30 days before the permit is issued (source) |
| Seattle, WA | Housing can only be demolished if one of several conditions is met, such as being owner-occupied or not used as a rental in the last six months. Applications need a rat abatement declaration covering at least 15 days before work starts, a salvage assessment, and an asbestos survey (source) |
Two patterns repeat. Older houses get a historic look before they come down, and neighbors increasingly get notice before the excavator shows up. If your house is in a historic district, our historic COA vs building permit guide covers that separate approval.
What a demolition permit process looks like, step by step
Austin's published process is one of the most detailed, and it's a useful model even if you live elsewhere (Austin demolition permit):
- Confirm you can build afterward. Austin recommends checking with land use staff that new construction will be allowed on the site before you apply to demolish.
- Apply with the demolition application and an affidavit of compliance.
- Plan review, including historic review for older homes and tree review for protected trees. Austin's threshold is 19 inches in diameter.
- Protect the site. Tree protection and erosion controls go in before any work, and get inspected.
- Disconnect utilities through the city's utility contact center and upload the refrigerant disposal acknowledgment. The sewer tap and final plumbing inspections happen along with the pre-construction inspection.
- Pre-construction inspection, after which the contractor receives the neighbor notification packet.
- Notify neighbors and wait out the notification window before demolition starts.
- Close out with the final tree and environmental inspections.
Austin also requires general contractors on affected projects to reuse or recycle at least 50% of construction debris and file a recycling report. Our protected tree permit guide explains why big trees on a teardown lot slow things down.
Can you do the demolition yourself?
Sometimes, at least for small residential jobs. Seattle says plans for small residential demolitions "rarely require a professional's stamp," so you may prepare the drawings yourself, and the demolition can be done by you or a contractor. But rat abatement and asbestos surveys must always be done by licensed professionals (Seattle SDCI).
Lead is the other issue. Under the EPA's renovation rule, demolition of painted surfaces in pre-1978 homes is always covered by lead-safe requirements for contractors, regardless of square footage (EPA RRP for contractors).
Common mistakes
- Buying a lot to tear down without checking whether the house triggers historic review.
- Calling it a remodel when more than half the exterior walls come off. Austin and Portland both treat that like a demolition for notice purposes.
- Forgetting the refrigerator and AC. Austin wants refrigerant disposal documented before the pre-construction inspection.
- Demolishing first and permitting later. In Los Angeles, the code lets the department withhold new building permits on a site where demolition was done without the required permit, and record an affidavit blocking new permits for five years after notice and a hearing (LAMC 91.106.4.1).
FAQ
Do I need a permit to demolish a house?
Yes, almost everywhere. Expect an asbestos survey, utility disconnects, and sewer capping before the permit is issued.
Do I need a permit to tear down a shed?
Often not for a small shed with no utilities, but rules vary. If it has wiring or plumbing, those must be disconnected safely.
How long does a demolition permit take?
Simple accessory-building demolitions can be quick, but whole-house demolitions can take weeks when asbestos work, utility disconnects, or waiting periods apply. See how long a building permit takes.
Will my neighbors be told before I demolish?
In many cities, yes. Austin requires the contractor to notify adjacent homes with a window of at least five days before demolition starts (Austin), and Los Angeles sends written notice to abutting owners and occupants for buildings over 45 years old (LAMC 91.106.4.5.1).
Does an old house need historic review before demolition?
Often. Austin sends residential structures 45 years or older to its Historic Preservation Office, and possibly the Historic Landmark Commission (Austin demolition permit).
Do I need an asbestos survey for a house demolition?
Many cities require one before issuing the permit. Seattle says you must meet asbestos survey requirements before you can obtain a demolition permit (Seattle SDCI).
Bottom line
Demolishing a house or garage usually needs a permit, an asbestos survey, utility disconnects, and a capped sewer. Some cities add waiting periods, neighbor notices, or deconstruction rules. Start early and confirm with our 10-minute AHJ permit checklist.
Last checked: October 2026.
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