Permit requirements vary by city and county, so there's no single national list that applies everywhere — always confirm specifics with your local building department before starting work. That said, most jurisdictions require a permit for the same broad categories of work, because the underlying concern (life safety, structural integrity, and future resale disclosure) is consistent even though the exact rules and fees differ locally.
Categories That Almost Always Require a Permit
- Structural changes — removing or altering load-bearing walls, foundation repair, roof structure changes, additions that increase the home's footprint or square footage.
- Electrical work beyond simple fixture swaps — new circuits, panel upgrades or replacements, rewiring, and adding outlets or switches typically require an electrical permit, often pulled by a licensed electrician.
- Plumbing beyond fixture replacement — relocating or adding water lines, drain lines, or venting, water heater replacement in many jurisdictions, and any work affecting the sewer or septic connection.
- HVAC system changes — installing or replacing a furnace, air conditioning system, or ductwork modifications in many areas.
- Additions and accessory structures — decks above a certain height, sheds above a certain size, garages, and any addition to the home's conditioned space.
- Window and door replacement in some jurisdictions, especially where it affects a required egress opening or the structural opening size.
Work That's Often Permit-Exempt
Cosmetic work — painting, wallpaper, new flooring that doesn't involve subfloor structural changes, cabinet and countertop replacement without moving plumbing or electrical, and like-for-like fixture swaps — is commonly exempt from permitting in many jurisdictions. But "commonly" isn't "always": some local codes require permits for work that seems purely cosmetic elsewhere, and the line between an exempt fixture swap and a permit-triggering relocation can be narrow. Confirm with your specific building department rather than assuming based on general guidance.
How to Actually Find Out What You Need
- Start with your city or county building department's website or front desk. Most publish a permit-requirement guide or checklist specific to their jurisdiction.
- Describe your actual scope of work, not a general category — "replacing a water heater" and "moving the water heater to a new location" can have different permit requirements even within the same city.
- Ask your licensed contractor what permits they typically pull for this type of work in this jurisdiction — an experienced local contractor usually already knows the specific local requirements and process.
- Confirm who pulls the permit — for licensed-trade work like electrical and plumbing, many jurisdictions require the licensed contractor to pull the permit rather than the homeowner.
What Happens If You Skip a Required Permit
Consequences vary by jurisdiction but commonly include: fines, being required to open up completed work for retroactive inspection (which can mean tearing out finished drywall or flooring), difficulty or delay selling the property once unpermitted work is disclosed or discovered during a buyer's inspection, and potential insurance claim complications if unpermitted work is involved in a later loss. For a flip specifically, unpermitted work discovered during the buyer's inspection or appraisal process is a common and costly source of last-minute deal problems.
What to Watch Out For
- Don't assume "the previous owner didn't pull a permit for this, so it doesn't need one." Prior unpermitted work isn't evidence of what's legally required — it may just mean the prior owner also skipped a requirement.
- Permit timelines vary widely by jurisdiction and can affect your renovation schedule significantly — build in buffer time rather than assuming approval will be immediate.
- Unpermitted work is a real disclosure issue at resale in most states — check your state's specific seller disclosure requirements around known unpermitted work.
- Don't rely on a national list (including this one) as a final answer. Treat this as a starting checklist of categories to ask your specific local building department about, not a substitute for confirming local requirements.
Frequently Asked Questions
Do I need a permit to paint or install new flooring?
In most jurisdictions, no — purely cosmetic work like painting or flooring replacement that doesn't involve structural or subfloor changes is commonly exempt. Confirm with your local building department, since this does vary.
Who is responsible for pulling permits, me or my contractor?
It depends on the jurisdiction and the type of work — many places require licensed trades (electrical, plumbing) to pull their own permits, while a homeowner can sometimes pull permits for general work they're doing themselves. Ask your local building department directly.
What happens if I sell a house with unpermitted work?
It varies by state, but many require disclosure of known unpermitted work, and buyers' inspectors or appraisers may flag it during the sale process, which can affect financing, negotiations, or closing timelines.