How much does deck repair cost in Boise, ID?

What does deck repair cost in 2026?

Most repairs land in the low thousands. Two national cost publishers put typical projects in a similar band: HomeAdvisor's page, updated June 2026, lists $890–$3,664 with an average of $2,246, and Fixr's January 2025 page lists $500–$3,000 with a $1,500 average, modeled on a 300-square-foot deck. Neither figure is local to Boise, and neither is a Valley Decks price. They are the best published starting points we found, and the table lines them up.

The per-square-foot spread is wide ($3–$20 at HomeAdvisor against $10–$55 at Fixr) because "repair" covers everything from re-driving popped screws to replacing a third of the frame. A per-square-foot number is useful for comparing two decks of different sizes. For your own deck, the line items below say more.

Deck repair prices by part

Repairs are priced per piece, and the structural pieces cost the most. Fixr's January 2025 table is the most complete published breakdown; it is national and lists repair labor at $50–$100 an hour, so treat it as a planning range rather than a Boise bid.

Here is how those unit prices add up. Take a 1990s deck with three rotted joists at the house end, two posts rotted at grade on shallow piers, and 16 feet of unflashed ledger. Using Fixr's ranges, three joists run $450–$1,050, two posts $400–$800, two new footings $600–$800 and the flashing $240–$480. That totals $1,690–$3,130 before boards, railing or a permit. This is our arithmetic on published national figures, not a quote.

What do common deck problems cost to fix?

Homeowners usually call about a symptom, not a part. Fixr also prices repairs by the problem you can see, on a 300-square-foot deck. The top of each range is where the visible symptom turns out to be structural.

Sagging and wobbling are the two symptoms to take seriously right away. A deck that drops or moves when people shift their weight can have a ledger, beam or footing problem, and those carry the whole load. A loose guard post is the other safety item, because a guard is the only thing between a raised deck and the ground.

Why Boise decks need the repairs they do

Treasure Valley decks wear out from freeze-thaw and sun more than from rain. NOAA's 1991–2020 normals for the Boise airport show 108 nights a year at or below freezing but only 16 days that stay frozen, and about 55 days at 90°F or hotter, against just 11.51 inches of precipitation. That pattern decides which repairs come up most often on older Treasure Valley decks.

• Heaving footings. Boise's design frost depth is 24 inches. Older decks on pier blocks or short piers lift and settle every winter, which loosens stairs and opens gaps at the ledger. The fix is a new footing, priced per footing above.
• Ledger rot. Decks built before flashing was routine let water run behind the ledger, and snowmelt off the house keeps it wet in spring. A ledger repair can also mean repairing the house rim joist behind it, which is priced only after the board is off. Our guide to ledger board repair explains what that involves.
• Sprinkler-soaked framing. Lawn sprinklers that hit posts and joists all summer rot wood from the bottom up in a climate that otherwise stays dry.
• Sun-damaged railing and stair treads. South- and west-facing rails and treads check, split and lose their finish first, so railing and stair line items show up on most older-deck repair lists.
• Corroded hardware. Plain steel nails and hangers rust where they touch treated lumber; replacing them is labor-heavy because every connection has to be reached.

When does repair stop making sense?

Repair while the problems are contained; replace when the frame is failing in several places at once. Boards, railing, stairs and a handful of joists are repairs. When the ledger, a large share of the joists and the footings all need work, the labor of taking the deck apart to reach them closes most of the gap to a new deck, and you end up with old framing under new parts.

The numbers show where that line falls. Using the same Fixr unit prices, a 300-square-foot deck that needs 24 feet of ledger flashing, eight joists, six posts, six footings and 40 feet of new railing adds up to $6,560–$18,320. Fixr's full replacement figure for the same deck is $6,000–$18,600 ($20–$62 per sq ft), and that buys a new frame, new footings and a fresh start on code. For comparison, 2026 market ranges put a new raised 300-square-foot composite deck at $11,000–$21,000 before railing and stairs.

Our repair-or-replace checklist walks through each of those inspections step by step. If your deck lands on the repair side, the deck repair service page covers how we scope the work. If it lands on the other side, the deck replacement cost guide has tear-out and rebuild ranges.

Do deck repairs need a permit in Boise?

Structural repairs on a raised deck should be treated as permit work; board-for-board surface repairs usually are not. Boise requires a building permit for any deck more than 12 inches above grade, and replacing posts, beams, joists, footings or the ledger is structural. The city's brochure does not spell out which repairs need a permit, so call the building division at 208-608-7070 with your scope. Nampa uses the same 12-inch threshold. Meridian's rules key off size, height, attachment and exit doors: any deck attached to the house needs a permit there, and so does a detached one over 200 square feet or 30 inches high.

A permit adds a fee and some time, and published repair figures leave it out. It also brings an inspection, which is worth having when the repair is the ledger or the footings. The Boise deck permit guide explains the submittal.

Comparing deck repair quotes

Ask for the scope in parts, with a unit price for anything that might grow. Repairs change once boards come up, and a quote that names unit prices turns those surprises into arithmetic instead of a negotiation.

1. A written list of each item being repaired, with its location ("joists 3–5 from the house, east side").
2. Unit prices for hidden work: per joist, per post, per footing and per linear foot of ledger or flashing.
3. Whether new footings reach the 24-inch frost depth.
4. Fastener and hanger type, hot-dipped galvanized or stainless where they touch treated lumber.
5. Who checks the permit question and who pulls it if one is needed.
6. Railing replacement priced by linear foot and named by product, if the guards are part of the job.
7. Photos of the problem areas before and after, especially at the ledger.

If railing is the main item on your list, the deck railing cost guide breaks out installed prices by material. When you are ready for a number on your own deck, request an estimate and we will inspect the frame first and price the repair from what we find.