Do I need a permit to put up a fence?
It depends on the specifics
Fences under 7 feet are typically exempt from a building permit — but height limits, corner-visibility rules and pool-barrier requirements are set locally and catch people constantly.
What changes the answer
- Under 7 feet tall — typically exempt from a building permit
- Over 7 feet — typically requires a permit
- Any fence acting as a pool barrier — separate and stricter rules apply regardless of height
- Front-yard and corner-lot fences are usually capped lower by zoning, which is a separate approval from a building permit
These thresholds come from the model code and are commonly amended locally, which is usually where people get caught.
Why it matters
Zoning setback and sight-triangle violations are the usual failure here, not structural ones — and the remedy is normally to move the fence at your cost.
Confirm the requirement with the authority that would issue the permit before deciding.
The version of this people actually ask
Do I need a permit for a 6 foot privacy fence?
Six feet is under the building code's 7 foot line, so a building permit is typically not the obstacle. Zoning usually is. Front yards are commonly capped at 3 or 4 feet, corner lots have sight-triangle rules at the intersection, and both are enforced by a different department than the one that issues building permits. The fence that gets ordered moved is almost always a legal height in the wrong part of the lot.
Do I need a permit to replace an existing fence?
Like-for-like replacement in the same location at the same height is usually treated as maintenance. Two things commonly change that without the owner noticing: moving the line even slightly, which can put a legal fence outside a setback, and replacing a fence that was grandfathered under an older rule, because the replacement is generally judged by today's rule rather than the one it was built under.
Do I need a permit for a fence around a pool?
A pool barrier is a different item from a fence and is not covered by the 7 foot exemption at all. It has its own minimum height, its own limits on gaps and climbable surfaces, and self-closing self-latching gate hardware, and it is inspected as a life-safety item. Where a boundary fence is being used as part of the barrier it has to meet the barrier rules, not the fence ones.
Does my neighbour have to agree to the fence?
Not a code question, and not one a building department will settle — but it is the one that produces the disputes. Position relative to the surveyed line, shared-cost statutes in some states, and whose side the finished face points at are civil matters between owners. A permit, where one is needed, says the structure is legal, not that it is in the right place.
This is the typical rule, not your answer
This is the typical rule in the United States and not a decision about your property — permitting is run by more than 22,000 separate authorities and any of them can amend the code it adopts, so confirm with your local building department before you start. Put a ZIP in to see what applies in that state, and how to reach the office that decides.
IRC R105.2 exemption for fences not over 7 feet high. Pool barriers fall under IRC Appendix V / ISPSC.
Other projects
- Build a deckA permit is usually required once a deck is more than 200 square feet, more than 30 inches above grade, serves an exit door, or is attached to the house.
- Add a shed or small outbuildingOne-story detached sheds are typically exempt up to 200 square feet under the residential code — but the number people quote is 120, and both are right depending on which code your jurisdiction adopted.
- Replace a water heaterReplacing a water heater almost always requires a permit, even though it is routinely done without one.
- Remove or open up an interior wallIf the wall is load-bearing, a permit and engineered drawings are required. If you are not certain whether it is load-bearing, assume it is.
- Upgrade or replace an electrical panelPanel and service work always requires a permit, and in most places must be done by a licensed electrician.
- Replace a roofRe-roofing normally requires a permit, and the number of existing layers is what usually decides whether you can go over the top.