Do I need a permit to flip a house?

The flip itself doesn't need a permit, but much of the renovation work may. Confirm requirements for each part of your scope with your local building department.

What renovations usually require a permit?

Commonly structural changes, electrical, plumbing, HVAC, roofing, and additions. Cosmetic work like painting often doesn't, but rules vary locally.

How do I check a property's permit history?

Contact the local building department or search its online permit portal for the address. Some areas require a records request.

Can I sell a flip with open permits?

It may complicate or delay the sale. Close permits before listing, and ask your agent and attorney about local requirements.

Who should pull the permits on a flip?

Often the licensed contractor responsible for that trade. Confirm with your local building department and spell it out in your contractor agreement.

Permit Checklist for House Flips: What Typically Needs One

Why do permits matter so much on a flip?

This post is educational. Building codes and permit rules vary widely by state, county, and city. Always confirm with your local building department and licensed professionals.

Safety. Inspections exist because electrical, gas, structural, and plumbing work can hurt people when done wrong.
Resale. Buyers' inspectors, appraisers, and agents may check permit records. Unpermitted work can delay or kill a sale, or force a price cut.
Timeline. Permit review and inspections are part of your schedule. Missing them adds months.
Lender draws. For work that requires inspection, a passed inspection is often part of the evidence that a stage is complete.

Which flip work commonly needs a permit?

General patterns only. Your jurisdiction's rules control.

Work type	Commonly requires a permit?	Notes to confirm locally
Interior painting, flooring, cabinets (no plumbing or electrical changes)	Often not	Some areas regulate certain flooring or cabinet work in specific situations
Roof replacement	Often yes	Some areas exempt minor repairs
Window or exterior door replacement	Varies	Size changes and egress rules matter
Electrical: new circuits, panel replacement, rewiring	Usually yes	Licensed electrician is typically required
Plumbing: moving fixtures, repiping, water heater replacement	Usually yes	Water heaters often need a permit
HVAC replacement or new ductwork	Usually yes	Licensed contractor often required
Removing or altering walls	Yes if structural; varies otherwise	Structural engineer may be needed
Additions, decks, garage conversions	Usually yes	Zoning and setback review may apply
Basement finishing	Often yes	Egress, ceiling height, and moisture rules
Demolition	Varies	Asbestos or lead rules may apply to older homes
Fences, driveways, sheds	Varies	Zoning and HOA rules too

Pre-purchase permit checklist

Search the property's permit history with the local building department (online portal or records request)
Identify open or expired permits from prior owners
Compare permitted square footage and room count with the listing and what you see
Note additions, garage conversions, or finished basements with no permit record
Ask the seller about known unpermitted work
Estimate the cost and time to close out or legalize old work, or price it into your offer
Confirm zoning allows your planned use, especially if adding units or bedrooms
Check HOA rules for exterior or structural changes

Unpermitted work your ARV depends on is a serious risk. Ask your agent, attorney, and contractor how it affects value and saleability in that market.

Pre-renovation permit checklist

List every scope line that may require a permit
Confirm requirements with the local building department
Decide who pulls each permit (usually the licensed contractor for their trade)
Get typical review times for your scope and plan the schedule around them
Prepare drawings or plans if required
Budget permit fees as their own line in the rehab budget
Post permits on site as required
Calendar required inspections (rough-in, framing, final)

How long do permits take for a flip?

It depends on the jurisdiction, the scope, and how busy the office is. Some simple permits are issued quickly; projects that need plan review can take much longer. Call the local office early and ask about current timelines for your type of work, then put that number on your project calendar. Starting the permit process during your due diligence period, where possible, can save weeks.

Example (hypothetical numbers): if permit review adds four weeks and your monthly holding cost is $3,000, the delay costs about $3,000 in carrying costs. Applying during escrow, rather than after closing, can recover most of that.

Pre-listing permit checklist

All permits finaled and inspections passed
Copies of permits and final sign-offs in a folder for buyers and agents
Contractor invoices and warranties gathered
Any old open permits from prior owners closed out
Disclosures prepared with your agent and attorney as required in your state

What if you discover unpermitted work after closing?

Talk to the local building department and a licensed contractor about the options, which can include permitting the existing work after inspection, modifying it, or removing it. Costs and timing vary. Factor it into your budget and timeline, and tell your lender if it affects scope or draws.

How do permits fit with your lender's draws?

For work that requires inspection, the passed inspection is often the cleanest proof that a stage is complete. Plan your draw stages around inspection points: for example, request the rough-in draw after the rough-in inspection passes, not before. Keep a copy of every permit card and inspection result in the same folder as your draw photos and invoices. If an inspection fails, fix the item and re-inspect before requesting that draw. Lender practices vary, so ask your lender at the start what evidence it wants for each stage.

Should you ever skip a permit to save time?

No. It may look faster during the rehab, but it moves the risk to the sale, when you have the least room to absorb it. A buyer's inspector or appraiser may notice the work, a buyer's lender may ask questions, and you may be asked to open walls or redo work. Get the permit.

Key takeaways

Permit rules are local; confirm with the building department and licensed professionals.
Structural, electrical, plumbing, HVAC, roofing, and additions commonly need permits.
Check permit history before you buy, and close every permit before you list.
Put permit fees and review time in your budget and calendar.

Plan permits into the deal

Include permit costs and timing in your budget and calendar when you submit your deal. Program details are on the fix-and-flip loan page.