Deck repair covers everything from swapping one warped board to jacking up a sagging structure, so the published prices span a wide field. The cost guides put a typical repair in the high three figures to low four figures, but the line items underneath - a board here, a railing section there, a rotted post at the base - are what actually add up on your invoice.
This guide collects what the named sources - HomeGuide and Fixr, with a total-cost figure from Angi - list for deck repair, broken down by the part being fixed, plus the point where repair stops making sense against a full rebuild. For new-build and material pricing, our deck cost guide is the pillar this sits under.
Pricing note - reviewed August 7, 2026: Every figure on this page is quoted from a named published cost guide, each opened on August 7, 2026. These are national published ranges, not local quotes or Plank Compass averages - deck work is priced job by job, and prices vary by market, size, material and site. Confirm the itemized total on site with a licensed, insured builder.
How Much Does Deck Repair Cost?
For an overall figure, HomeGuide lists most deck repairs at $750 to $2,500. Fixr, working from a 300-square-foot deck, lists repairs at $500 to $3,000, with most homeowners paying $1,500 to resurface a 300-square-foot deck, or $10 to $55 per square foot. Within that band, Fixr lists floor-board repair specifically at $10 to $35 per square foot. Angi frames the two ends bluntly: it lists deck repairs at $270 for minor fixes and up to $7,500 for major problems.
Those totals hide a lot of variation, because a repair is really a bundle of per-part prices. The next section breaks the invoice into the pieces a crew actually replaces.
Deck Repair Cost by Part
The parts of a deck fail at different rates and different prices. Boards and railings take the weather; joists, posts, and footings carry the load. HomeGuide prices most of these per board, per linear foot, or per post, while Fixr adds joist and footing figures on its 300-square-foot basis.
HomeGuide lists board replacement at $175 to $875 per board, or $25 to $125 per square foot depending on the material. It lists railing repair at $150 to $5,000 total and railing replacement at $20 to $250 per linear foot, post replacement at $150 to $500 per post, stair repair at $150 to $300 per stair, and fastener replacement starting at $50 to $200. Fixr lists board replacement at $15 to $55 per square foot, railing repair at $25 to $100 per linear foot and replacement at $50 to $250, joist repair at $100 to $300 per joist and replacement at $150 to $350, post replacement at $200 to $400 per post, and footing replacement at $300 to $400 per footing.
Published guide figures by deck repair part
| Repair | HomeGuide | Fixr |
|---|---|---|
| Board replacement | $175-$875 per board | $15-$55 per sq ft |
| Railing repair | $150-$5,000 total | $25-$100 per linear foot |
| Railing replacement | $20-$250 per linear foot | $50-$250 per linear foot |
| Joist repair | not listed | $100-$300 per joist |
| Joist replacement | not listed | $150-$350 per joist |
| Post replacement | $150-$500 per post | $200-$400 per post |
| Footing replacement | not listed | $300-$400 per footing |
| Stair repair | $150-$300 per stair | not listed |
Small fixes round out a repair invoice. HomeGuide lists replacing missing or damaged fasteners at $50 to $200, and common stair repairs at $150 to $300 per stair. None of these is large on its own, but a repair rarely touches just one item, and several small line items are how a $270 minor fix grows into a four-figure invoice.
Cleaning and sealing often rides along with a repair to protect the fresh work. HomeGuide lists deck cleaning and sealing at $300 to $1,500 depending on size and material; our deck staining and refinishing listings cover that side of the job, and our deck staining cost guide prices it out.
Repair vs Replace
At some point the repair invoice gets close enough to a rebuild that replacing makes more sense. The math is a comparison, not a formula. Fixr lists deck repair at $500 to $3,000 and a full replacement at $6,000 to $18,600 for a 300-square-foot deck, or $20 to $62 per square foot. HomeGuide lists replacement at $30 to $55 per square foot against its $750 to $2,500 typical repair.
The per-square-foot figures sharpen that comparison. Fixr lists repairing deck boards at $10 to $35 per square foot against replacing them at $15 to $55 per square foot, so even at the board level a replacement carries a premium over a fix, until enough boards fail that swapping the whole surface in one pass wins on labor. The rough signal in those numbers: when the parts adding up on a repair estimate start to approach the per-square-foot replacement figure, or when the same components keep failing, a rebuild is worth pricing. Our deck replacement cost guide lays out the full replacement path, including the demolition of the old deck.
Structural Red Flags
Some deck problems are not cosmetic, and their prices reflect it. Fixr lists fixing a sagging deck at $750 to $10,000 and repairing termite damage at $500 to $10,000. Rot at the base of a post is a common culprit; HomeGuide lists post replacement at $150 to $500 and Fixr at $200 to $400 per post, and Fixr lists footing replacement at $300 to $400 each.
These are not do-it-yourself items to diagnose from a cost table. A soft or spongy board, a wobbling railing, a post that has darkened at the base, or a deck that sways when you walk it are all reasons to have a licensed builder inspect the structure in person before you decide on any fix. The spread on these figures is wide for a reason: a post that only needs resetting is a different job from one whose footing has failed, and only someone standing on the deck can tell which you have.
The figures here tell you what a repair may run; only an on-site inspection tells you what your deck actually needs, and what it is safe to keep using in the meantime. Compare inspectors and repair crews in Denver through our directory, and if the structure turns out to be too far gone to patch, our deck replacement cost guide covers the rebuild.
Frequently Asked Questions
How much does deck repair cost?
HomeGuide lists most deck repairs at $750 to $2,500. Fixr lists $500 to $3,000 for a 300-square-foot deck, with $1,500 to resurface it, or $10 to $55 per square foot. Angi lists $270 for minor fixes and up to $7,500 for major problems.
How much does it cost to replace deck boards?
HomeGuide lists board replacement at $175 to $875 per board, or $25 to $125 per square foot depending on the material. Fixr lists replacing deck boards at $15 to $55 per square foot.
When is it cheaper to replace a deck than repair it?
It is a comparison of the two estimates. Fixr lists repair at $500 to $3,000 versus a replacement at $6,000 to $18,600 for a 300-square-foot deck, or $20 to $62 per square foot, and HomeGuide lists replacement at $30 to $55 per square foot. When repair line items climb toward the replacement figure, price a rebuild; see our deck replacement cost guide.
What are signs a deck needs structural repair?
Sagging, soft or rotted posts, and insect damage are the big ones. Fixr lists fixing a sagging deck at $750 to $10,000 and termite damage at $500 to $10,000, and both HomeGuide ($150 to $500) and Fixr ($200 to $400) list post replacement per post. Any of these warrants an in-person inspection by a licensed builder rather than a guess from a price table.
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