DECKS & FENCES ยท ST. JOSEPH
Deck and Fence Repair in St. Joseph
A loose board or a sagging gate can be a small repair, but the supporting parts need checking first. The assessment includes posts, stairs, rails and connections underneath, where damage can be concealed. In St. Joseph a few local rules also decide which repairs need a permit.
What should you budget for deck or fence repairs?
Deck and fence repairs need separate scopes. HomeGuide's national deck guide puts average deck repairs at $750โ$2,500; its fence guide puts a standard fence repair at $300โ$900, with examples such as a panel or one to two posts. These are published national planning comparisons, not St. Joseph averages or our quoted prices. Sources checked October 17, 2026.
| Project | What the estimate needs to separate |
|---|---|
| Deck surface repair | Boards and finish work versus damaged framing underneath |
| Structural deck work | Ledger, joists, stairs, footings, access and any required permit |
| Fence or gate repair | Pickets/panel versus posts in concrete, gate hardware and disposal |
Send photos of the whole structure and the damaged area. We assess what can remain before quoting the repair. Get a deck or fence estimate โ
What's different about decks and fences here
- New decks need a permit, whatever the size. St. Joseph doesn't use the model code's exemption for small, low, freestanding decks, and it deleted the model code's "ordinary repairs" exemption too. So we check with the city before starting deck repairs.
- Footings go to 36 inches. The city's code sets a 36-inch frost line, and its deck checklist requires frost footings for decks over 600 sq ft or attached to the house.
- Wood takes a beating. The city's own design table rates St. Joseph "Termite = Moderate to Heavy" and "Weathering = Severe," so wood at or in the ground needs to be rated for ground contact.
- Every fence post goes in concrete. The city's fence code requires it: "All posts used for any type of fencing shall be set in a concrete base."
Deck repair
Keep off a deck with loose guards, sagging framing or uncertain support. Observe from safe ground-level positions; do not climb underneath, probe wood or load-test it yourself. Structural concerns need a qualified deck professional or engineer as appropriate before the repair scope is agreed.
What a deck assessment needs to cover
| Part | What fails | What we look for |
|---|---|---|
| Ledger (where the deck meets the house) | Rot behind it, missing flashing, nails instead of bolts | Soft wood, rust streaks, gaps. The city's checklist asks attached decks to show the ledger bolt pattern |
| Posts and footings | Post bases rotted at grade, footings heaved or too shallow | Posts sitting in soil or on a paver; frost heave after winter |
| Joists and beams | Rot at the top edge under the boards, end rot, sagging spans | Professional assessment of decay, connections and the purpose of added framing |
| Stairs | Stringers rotted at the bottom, loose treads | Stringers sitting on dirt |
| Guards and railings | Loose posts, missing balusters, spacing too wide | Professional assessment of post connections and guard spacing; do not push on a suspect railing to test it |
| Decking | Cupped, split or soft boards; popped screws | Boards that flex or crack underfoot |
Repair, rebuild and the permit question
Neither of the city's permit lists mentions deck repair, and the city issues quick over-the-counter permits for "miscellaneous repairs." So before replacing boards, we check with Building Development. Replacing framing, footings or stairs, or changing the deck's size or height, is new-construction territory and needs a permit. If our inspection turns a board job into a framing job, we'll tell you before starting.
A new-deck permit application includes a site plan with property lines and setbacks, whether the deck is attached (with the ledger bolt pattern), footing size and depth, framing, stairs, and "Railing Details, Dimensions of Guards and Spacing." That's from the city's deck checklist. Decks go to Planning & Zoning first for a setback check. โ Full permit guide
When the deck price changes
The national range above is a comparison for average repairs, not a rate per square foot. Rotten framing under intact boards, height and access, stairs, and a repair that becomes a rebuild can change the job substantially. Ask the written scope to separate decking, framing, railings, finish work and permits. Compare repair estimates in our cost guide โ
Fence repair
The short version of the city's fence rules
4 ft maximum in the front yard, 6 ft on the sides and 8 ft in back, measured from the highest adjoining grade. No privacy fence in front of the house. Finished side facing out. Every post in concrete. A $34.75 permit from Planning & Zoning for fences over 30 inches. The city's website says fence maintenance and repair don't need one. โ All the fence rules and exceptions
The fence code also expects upkeep: "Missing boards, pickets or posts shall be replaced in a timely manner with material of the same type and quality."
Common fence repairs
- Leaning or broken posts: set new posts in concrete, as the code requires, with the top of the concrete sloped to shed water. With a 36-inch frost line, posts set shallow heave.
- Sagging gates: usually the hinge post, not the gate. We re-set or brace the post, add an anti-sag kit and adjust the latch.
- Missing or rotten pickets and rails: replaced to match, which the code specifically expects.
- Replacing long runs: that's closer to a new fence. We check the permit question with Planning & Zoning before starting.
Before we dig: Missouri law requires a call to 811 at least two working days before digging fence posts, and the locators won't mark lines you own, like your sewer lateral or the water line from the meter. Tell us about any you know of. โ 811 and private lines
After a storm
St. Joseph gets real wind: the NOAA storm database records an 82 mph gust at the St. Joseph airport in June 2023. A fence that "just blew over" often had posts rotted at grade, so after a storm we check posts and footings, not just the panels. โ Storm damage repair
In Hall Street and Museum Hill
In the two local historic districts, "Repair of an existing fence in-kind" is maintenance with no certificate needed. A new fence in a side or rear yard needs advance staff approval from the Historic Preservation Planner. โ Historic district repairs
What to tell us
- A photo from ground level showing the whole deck or fence run, plus close-ups of the problem areas
- How high the deck is off the ground and whether it's attached to the house
- For fences: which yard (front, side or rear), the height, and whether it's on the property line
Get a deck or fence quote.
Tell us what's loose, leaning or soft.
Get a deck or fence quote โ