Fences near you

There is no federal fence code and, in most states, no statewide height limit either. The limit comes from a municipal zoning ordinance, and it usually differs between the front yard and the back, because the front rule exists to protect sight lines at driveways and corners rather than your privacy. Homeowner association rules can be stricter still, and they are enforced separately from the city's.

Seattle shows how specific this gets. The city says no construction permit is required if the fence is 8 feet or less in total height and has no masonry or concrete elements over 6 feet, unless it is in a flood-prone area. Its neighborhood residential and multifamily zones cap the fence at 6 feet, with an additional 2 feet of architectural features such as arbors or trellises, but limit it to 4 feet when it sits in a front or street-side setback. Where a retaining wall raises the grade, Seattle caps the combined height of wall plus fence at nine feet six inches. Those are Seattle's numbers and only Seattle's: the point is the shape of the rules, not the figures.

So the first call is to your own building or planning department, and the question to ask is specific: what is the maximum height in my zone, in the front yard and the rear, is a permit required, and does anything change because of a corner lot, an easement, a critical area or a pool. A contractor who works in your city every week will usually know, but the department's answer is the one that governs.

A fence line is dozens of holes dug two feet or more into ground that may carry gas, electric, water, sewer, cable and fiber. The national 811 service exists for exactly this. It is free, it is for anyone who plans to dig including homeowners, and fence installation is one of the projects it names directly. You contact 811 a few business days before you begin, the utilities respond, and they mark the approximate location of their buried lines with paint or flags so that you do not unintentionally dig into one.

Two points get missed. Depth is not an excuse: the service is blunt that shallow digging is still digging and that every digging project, regardless of depth, requires contacting 811. And the marks cover utility-owned lines, not the ones a previous owner ran themselves, so a private irrigation main, a line out to a shed, a septic field or a buried invisible-fence wire will not be flagged. Tell your fence contractor about anything you know of, and walk the line with them before the auger starts.

Good crews handle the 811 request as a matter of routine and schedule the dig around the response. Ask when you book the job whether they will place the request and how the marks will be protected until the holes are dug.

A fence around a pool is a different product from a fence around a yard, and it is the one fence where the details are the whole point. The Consumer Product Safety Commission publishes Safety Barrier Guidelines for Residential Pools, and it is careful to say these are guidelines rather than a CPSC standard or a mandatory requirement, while noting that some states and localities have written them into their building codes. CPSC cites CDC data that drowning is the leading cause of unintentional death for children aged 1 to 4, and reports that each year nearly 300 children under age 5 drown in swimming pools.

State law can go further than the guidelines and is not uniform. California's Health and Safety Code requires a pool enclosure with a minimum height of 60 inches, a maximum vertical clearance from the ground of two inches, gaps that will not pass a sphere four inches in diameter, and gates that open away from the pool and are self-closing with a self-latching device placed no lower than 60 inches above the ground. Florida's Residential Swimming Pool Safety Act requires a barrier at least 4 feet high on the outside with gates that open outward, are self-closing and self-latching with the release on the pool side, and it also allows an owner to satisfy the act with one of several alternatives instead, including an approved safety pool cover meeting ASTM F1346-91 or an exit alarm rated at a minimum 85 dB A at 10 feet. Check your own state and city before you buy a gate.

Material decides how the fence looks and how you will spend your weekends, but it rarely decides how long the fence stands. Posts, footings and hardware do that. Choose the material for the look and the upkeep you want, then spend the argument with your contractor on what goes in the ground.

In cold parts of the country the ground freezes to a depth that varies enormously between states and even within one state, and water in freezing soil lifts anything it grips. A post set above that depth is jacked up a little each winter and never fully settles back, which is why gates that closed fine in October bind in March and why fence lines go wavy after a few years.

How deep is a local answer, and the state building code is where it is written down. Minnesota's rules set a minimum footing depth due to freezing of five feet in Zone I, the northern counties, and three and a half feet in Zone II to the south. A number like that is specific to Minnesota and to the structures the rule covers, and it shows the scale of the problem in the north; a city on the Gulf Coast or in the desert Southwest works to a far shallower requirement. Ask your building department what depth applies where you live, and ask the fence contractor what depth they actually dig to.

Timing matters too. Frozen ground is slow and expensive to auger, so cold-state installers book heavily from spring through fall, and a fence quoted in November may be scheduled for April. In much of the South and West the season is year round, and the constraint is heat and soil moisture rather than frost.

Most fence arguments are really boundary arguments, and they are cheaper to settle before the posts go in. A current survey or the recorded plat tells you where the line is; long use, a hedge or the old fence does not. Building slightly inside your own line keeps the whole structure on your property and keeps maintenance access simple, at the cost of giving up a few inches.

Who pays is a question of state law, and states differ. California's Civil Code section 841, the Good Neighbor Fence Act, presumes that adjoining landowners benefit equally from a dividing fence and are equally responsible for its reasonable costs, and it requires a landowner to give 30 days' prior written notice to each affected adjoining landowner before incurring those costs, describing the problem, the proposed work, the estimated cost and how it would be shared. That is California's statute; another state may have no equivalent, or a different one. Whatever your state says, telling the neighbor what you plan and putting it in writing is the step that prevents the dispute.

Repair is the right call when the posts are sound and the damage is above ground: a truck backed into two panels, a storm took a run of boards, or the pickets are tired while the framing is not. Matching new lumber to a weathered fence never looks perfect, but the fence keeps doing its job for a fraction of the disruption.

Replacement starts to make sense once posts are failing across the line rather than in one spot, because each repair means digging beside a footing that is already in the way. It is also the moment to fix what the fence never did well: the height allowed in your zone today, a gate wide enough for a mower or a wheelbarrow, or a pool barrier that meets current state requirements rather than the ones in force when the pool was dug.

Ask for the quote to be broken into removal and disposal, posts and footings, panels or boards, gates and hardware. That way you can see whether you are paying for a new fence or for a fence with old problems buried underneath it.