deck replacement cost

What deck replacement costs in 2026

For a typical 300- to 400-square-foot residential deck, most homeowners pay somewhere between $4,000 and $18,000, with the national average landing around $9,000 to $12,000 for a full replacement. All in, deck replacement cost runs about $15 to $45 per square foot once demolition, materials, and labor are combined, based on 2026 contractor pricing data.

Published cost-guide rates describe the same work with a wider spread: HomeGuide lists replacement at $30 to $55 per square foot, and Fixr lists $20 to $62 per square foot for the deck alone, rising to $20 to $70 once demolition is included. Replacement costs more per square foot than a new build because someone has to tear out and haul away the old structure — and because the framing you uncover often needs work before new boards can go down.

Two 2026 price pressures are worth knowing. Residential construction material prices rose 3.7% in April 2026, the fastest pace in three years, and metal trim and fasteners have run 40% or more above last year's prices — which is why current building-cost guides recommend a written price-validity window on any quote. Thirty days is standard.

Where the money goes: materials, labor, and demolition

Labor usually accounts for roughly half of a deck replacement bill, with materials taking most of the rest, according to 2026 replacement cost breakdowns. Complex layouts shift that balance toward labor.

What decking materials cost per square foot

One detail surprises a lot of homeowners: the frame underneath stays pressure-treated lumber no matter which surface you choose. Joists, beams, and posts are almost always PT pine, so upgrading from wood to composite changes the boards and railing, not the whole structure — which is why the gap between wood and composite quotes is often smaller than expected.

What labor costs per square foot

Full-service labor for a deck replacement typically runs $8 to $22 per square foot depending on region, complexity, and contractor availability. HomeGuide's 2026 data centers on $11 to $22 per square foot, while Angi's contractor network reports $15 to $35 for more complex builds. The average labor cost to replace deck boards only, on an existing frame, is lower — some regional crews charge $3 to $7 per square foot for the labor portion of a board swap. Carpenters themselves run $50 to $100 per hour in most markets.

Labor also tracks the job's complexity. Composite adds time because hidden clips and tighter spacing control mean 10% to 20% more labor hours for the same footprint, and stairs, multi-level layouts, and limited site access push the rate toward the top of the range.

Demolition, permits, and the add-ons people forget

Demolition and disposal is the line that makes replacement more expensive than a new build. Published guides put tear-out and haul-away at $5 to $15 per square foot, or $500 to $1,000 flat for a complete removal, and most homeowners land between $500 and $2,500 total once dump fees are included.

The rest of the add-ons add up quickly:

• Building permits: $150 to $500 in most municipalities; structural work almost always requires one.
• Railing: $30 to $85 per linear foot installed.
• Stairs: $400 to $1,800 per stair run.
• Hidden framing repairs: $50 to $150 per joist, $300 to $900 for a ledger board, and $400 to $1,500 per post and footing.
• Contingency: budget 10% to 15% of the project cost for whatever the tear-off uncovers.

That hidden-repair line is the single most common reason a deck replacement quote grows after the first board comes up. A contractor who quotes without inspecting the substructure is a red flag, not a bargain.

Deck replacement cost by size

Using the published per-square-foot ranges above, here is what four common footprints look like in broad strokes. These are budget estimates before permits, railing upgrades, or structural repairs.

So how much does a 14x20 deck cost to replace? At 280 square feet, expect roughly $4,200 to $8,400 for pressure-treated wood and $6,200 to $12,600 for composite, with demolition and permits on top. The 12x12 row follows the published full-service range of $2,200 to $5,000 for wood and $3,500 to $6,500 for composite.

Bigger decks usually cost less per square foot because mobilization, permits, and design are fixed costs spread across more area — but adding height, curves, or a second level pushes the rate back up. Second-story decks and premium boards can add 20% to 40% to any of the numbers above.

DIY vs hiring a professional: the real math

What doing it yourself actually saves

If your frame passes inspection, board-only replacement is a realistic DIY project: you pay for materials, fasteners, and your own time instead of $3 to $7 per square foot in labor. On a 300-square-foot deck, that is a potential savings of $900 to $2,100, based on regional board-replacement pricing.

The savings shrink once you count the real costs. Tool rental or purchase runs $100 to $300 for a weekend if you do not own the basics. Miscuts and split boards mean buying extra material, and composite mistakes are expensive. Disposal costs $150 to $400 whether you or the crew hauls it, and treated lumber sometimes needs special handling at the transfer station. You still pull the permit if your municipality requires one.

The bigger risk is what you cannot see. Rotted joists, a compromised ledger board, or failing post bases are easy to miss without experience — and finding them mid-project usually means calling a contractor anyway, at a worse price than hiring one up front.

What a contractor's labor actually buys

A licensed contractor inspects the substructure before quoting, estimates material quantities with less waste, pulls permits, coordinates inspections, and carries liability insurance and workers' compensation coverage. That coverage matters most on elevated decks and structural work. Crews also move faster: most full replacements finish in two to five days, while board-only jobs can wrap in one to two.

Four checks that make the decision for you

1. Frame condition. If joists, ledger, and posts are sound, board replacement is a reasonable DIY path. If any of them fail, hire a professional.
2. Height and complexity. Anything over 30 inches off the ground needs railings, guardrails, and often stairs; multi-level or curved layouts raise both cost and risk.
3. Time and tools. Add a 10% to 15% material buffer for waste, and be honest about how many weekends the job will take.
4. Plan length and warranty. Staying 10 or more years? Professional installation with a workmanship warranty is easier to justify. Selling within a few years? A sound, simple DIY board swap can be enough.

Do not skip the middle path either: paying a contractor for an inspection before you decide can prevent an expensive mistake.

Repair, resurface, or replace?

Not every worn deck needs a full replacement, and the math has fairly clear thresholds.

Repair is usually enough when fewer than 20% of the boards show rot, cracking, or splintering and the frame, joists, and ledger are structurally sound. Published repair ranges run $750 to $2,500 from HomeGuide and $500 to $3,000 from Fixr, so a deck repair cost calculator can help you compare a stack of small fixes against a replacement.

Full replacement makes more sense when the decking surface is 15 to 20 years old, multiple joists show rot or insect damage, the ledger board has separated from the house, posts are rotted at or below grade, or the deck sags and bounces underfoot. The practical rule: once repair estimates approach 40% to 50% of replacement cost, replace.

Resurfacing sits between the two. If the frame passes inspection, replacing only the surface costs a fraction of a full rebuild because most of the demolition and framing work drops away.

How to price your own project before you call anyone

You can build a defensible budget number in a few minutes with the published rates in this guide:

1. Measure the deck and multiply length by width for square footage; break irregular shapes into rectangles and add 10% for waste.
2. Multiply square footage by the material rate for your chosen decking.
3. Multiply the same square footage by your local labor range — $8 to $22 per square foot for a full replacement, or $3 to $7 for board-only work.
4. Add disposal at $150 to $400 and the permit at $150 to $500.
5. Add a 10% to 15% contingency for repairs the tear-off may uncover.

For a 300-square-foot deck in mid-range composite, that formula lands around $5,500 to $9,000 once labor, disposal, and contingency are included, which matches the published regional examples.

An online deck replacement cost calculator is a decent sanity check, but treat the output as a range to negotiate around, not a quote. Real bids come from a site visit.

A local example you can check against

Deck Bros, a family-owned deck builder serving the Omaha and Lincoln metro area and Western Iowa, publishes install rates of $9.74 to $12.43 per square foot for wood decking and documents real project prices, including a 12x12 composite replacement at $16,000, a 24x12 resurface at $18,000, and a complete elevated replacement at $65,500. The company says it is licensed, bonded, and insured in Nebraska and Iowa and that most installation jobs on an existing structure are completed within a working day. Those are the company's own published figures — useful as one local anchor next to at least three itemized quotes for your own deck.

Mid-page pricing section with real case study: composite deck replacement at $44,426 (20x16x5, Fiberon Sanctuary, Westbury railing). Ideal for composite vs wood cost articles.

What an itemized quote should include

Ask every contractor to break out decking, framing, railing, stairs, footings, demolition, and permits as separate lines. A complete quote also states the material brand and product line, the total square footage, whether debris removal is included, any structural repair identified during the site visit, the start and completion timeline, and a price-validity window of about 30 days.

Red flags: no site visit before the estimate, a vague low per-square-foot price, no mention of permits, a request for full payment upfront, or no substructure inspection.

Budget-planning questions homeowners ask

What is the total range for a deck replacement? Most homeowners pay $4,000 to $18,000, with $9,000 to $12,000 typical for a standard 300- to 400-square-foot deck. Size, material, and substructure condition move the number most.

Is it cheaper to repair or replace? Repair is cheaper when damage is under about 20% of the surface and the frame is sound. Once repair estimates reach 40% to 50% of replacement cost, replacement is the better long-term spend.

Can I phase a deck replacement to spread the cost? Yes — many homeowners replace the surface first and add railing, stairs, or lighting in a later season. The exception is framing: if the substructure fails, phasing usually costs more than doing the structural work once. Ask about payment schedules and financing before you compare bids, and never pay in full before work begins.

Do I need a permit to replace a deck? In most municipalities, structural deck work requires a building permit, typically $150 to $500. Board-only replacement on an existing frame sometimes qualifies as cosmetic work, but anything structural almost always needs one.

How long does a deck replacement take? Board-only replacement on a small deck can finish in one to two days. A full replacement on a 300- to 500-square-foot deck usually takes three to five days, with structural rebuilds running longer.

Does a new deck add value? Yes. A wood deck addition nationally recouped about 82.9% of its cost at resale and a composite deck addition about 68.2%, per the 2024 Cost vs. Value study — one of the stronger exterior returns available.

The honest summary: deck replacement cost is not one number. It is a per-square-foot range set by material, a labor rate set by your market and the job's complexity, plus demolition, permits, and a contingency for whatever the old framing is hiding. Measure your deck, price it with the ranges above, then get at least three itemized quotes before you commit.