The boards are a symptom — look at the ledger
Deck collapses almost never start with the decking. They start with the ledger, the board that attaches the deck to the house.
A ledger fastened with nails, or with lag screws into siding rather than into the rim joist, or without flashing above it, is the standard failure. Water gets behind an unflashed ledger, the rim joist rots from the inside where nobody can see it, and one day the fasteners pull through with a crowd on the deck.
Any deck repair worth paying for begins with someone looking at the ledger connection and the flashing above it, plus the post-to-beam and beam-to-joist connections. Modern practice uses through-bolts or structural screws in a specified pattern, and galvanized or stainless connectors rated for treated lumber.
If a contractor quotes deck boards without ever looking underneath, get someone else.
Board replacement done properly
Individual boards get pulled, the joists beneath get inspected and probed, and any soft joist gets sistered or replaced before the new board goes down. Putting a new board over a rotten joist hides the actual problem.
Joist tops that are sound but weathered benefit from joist tape — a self-adhesive membrane over the top edge that keeps water out of the fastener holes. It is inexpensive and dramatically extends framing life.
New boards should match the existing in thickness and width, and be fastened with coated or stainless screws rated for treated lumber. Standard zinc fasteners corrode quickly in modern pressure-treated wood, which uses a copper-based preservative that eats them.
Expect the new boards to look different for a season. Weathered decking has silvered, and new material takes time to match even after staining.
Composite, wood, and what lasts
Pressure-treated pine is the economical standard and, maintained, lasts 15 to 20 years. It needs cleaning and sealing every couple of years, and it will check and split over time.
Cedar and redwood are more stable and naturally rot-resistant but cost more and still need maintenance.
Composite and PVC decking costs two to three times as much up front and essentially eliminates the maintenance cycle. It does not rot, does not splinter, and holds color. It also gets noticeably hotter in direct sun and is heavier, which matters on marginal framing.
Worth knowing: composite decking can usually go over existing wood framing, so an older deck with sound structure can get a new surface without a full rebuild. Have the framing verified first — composite is heavier than what it replaces.
Signs you need this work
- Deck boards that feel soft, spongy, or flex underfoot
- Splintering, cracking, or cupped boards
- Nails or screws backing out and standing proud of the surface
- Discoloration, dark staining, or visible fungal growth
- A railing that moves when you lean on it
- Any movement, sway, or noise from the deck structure when walked on
- Rust streaks running down from the ledger connection at the house
Cost by property type
| Property | Typical range | Notes |
|---|---|---|
| Apartment / condo | $245 – $1,590 | Balcony and shared deck structures are association-maintained and often subject to mandated inspection requirements. Report rather than repair. |
| Small home (under 1,500 sq ft) | $255 – $1,675 | Small ground-level decks are the safest and cheapest case — a failure is a short fall. |
| Midsize home (1,500–2,500 sq ft) | $260 – $1,700 | The baseline for this estimate — replacing a handful of boards on an attached deck. |
| Large home (2,500+ sq ft) | $290 – $1,895 | Large elevated decks mean more boards, more framing to inspect, and more consequence if something is wrong. |
| Older home (pre-1978) | $315 – $2,050 | Decks built before modern connector standards frequently have ledgers attached with nails rather than through-bolts or structural screws, which is the classic collapse mode. Have the ledger inspected specifically. |
| Rental / turnover unit | $230 – $1,505 | Deck safety is a serious liability exposure for a landlord. A structural inspection is worth far more than the cost of a few boards. |
| Small commercial / office | $310 – $2,040 | Commercial decks, patios, and balconies are subject to inspection requirements and engineered load standards. |
Ranges assume national-average handyman labor rates ($60–$100/hr) and mid-grade materials.
Cost by state
| State | Typical range | |
|---|---|---|
| Alabama | $245 – $1,520 | |
| Alaska | $305 – $1,880 | |
| Arizona | $260 – $1,640 | |
| Arkansas | $230 – $1,460 | |
| California | $305 – $2,000 | |
| Colorado | $275 – $1,760 | |
| Connecticut | $290 – $1,820 | |
| Delaware | $260 – $1,640 | |
| Florida | $260 – $1,700 | |
| Georgia | $245 – $1,580 | |
| Hawaii | $320 – $2,000 | |
| Idaho | $245 – $1,580 | |
| Illinois | $275 – $1,760 | |
| Indiana | $245 – $1,520 | |
| Iowa | $230 – $1,520 | |
| Kansas | $230 – $1,520 | |
| Kentucky | $230 – $1,520 | |
| Louisiana | $245 – $1,580 | |
| Maine | $260 – $1,640 | |
| Maryland | $290 – $1,820 | |
| Massachusetts | $305 – $1,940 | |
| Michigan | $245 – $1,640 | Find a handyman in Michigan |
| Minnesota | $260 – $1,700 | |
| Mississippi | $230 – $1,460 | |
| Missouri | $245 – $1,520 | |
| Montana | $245 – $1,580 | |
| Nebraska | $230 – $1,520 | |
| Nevada | $275 – $1,760 | |
| New Hampshire | $275 – $1,700 | |
| New Jersey | $305 – $1,880 | |
| New Mexico | $245 – $1,580 | |
| New York | $305 – $1,940 | |
| North Carolina | $245 – $1,640 | |
| North Dakota | $245 – $1,520 | |
| Ohio | $245 – $1,580 | Find a handyman in Ohio |
| Oklahoma | $230 – $1,520 | |
| Oregon | $275 – $1,760 | |
| Pennsylvania | $260 – $1,700 | |
| Rhode Island | $275 – $1,760 | |
| South Carolina | $245 – $1,580 | |
| South Dakota | $230 – $1,520 | |
| Tennessee | $245 – $1,580 | |
| Texas | $260 – $1,700 | |
| Utah | $260 – $1,640 | |
| Vermont | $260 – $1,640 | |
| Virginia | $260 – $1,700 | |
| Washington | $290 – $1,880 | |
| Washington DC | $320 – $2,000 | |
| West Virginia | $230 – $1,460 | |
| Wisconsin | $245 – $1,640 | |
| Wyoming | $245 – $1,520 |
State ranges reflect typical independent handyman labor rates for a midsize home.
Common questions
How much does deck board replacement cost?
Typically $8 to $20 per square foot for the replaced area including materials, or $300 to $900 for a handful of boards. Structural repairs to joists, beams, or the ledger cost considerably more.
How do I know if my deck is safe?
Check the ledger connection at the house for through-bolts and flashing, probe the joist ends and post bases for soft wood, and push hard on the railings. Any sway, movement, or soft framing means stop using it and get it inspected.
Can I put composite decking over my existing frame?
Often yes, if the framing is sound and the joist spacing meets the composite manufacturer's requirement — many composites need 16 inches on center or tighter. Have the structure verified first.
How often should a wood deck be sealed?
Every two to three years for most stains and sealers, sooner in harsh sun or heavy rain. A quick test: sprinkle water on the boards. If it soaks in rather than beading, it is time.
Related project cost guides
Sources and further reading
Primary sources behind this page. Federal safety, emissions and consumer-protection references — worth reading before you authorize any repair.
- ICC residential deck construction guide (DCA 6) Prescriptive residential deck construction standard used by most building departments.
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