Plan a deck around how you will actually use it

What does a deck cost in 2026, and why do quotes vary so much?

Angi's current planning benchmark for new deck construction is $30 to $60 per installed square foot, which puts a common 16-by-20 platform between roughly $9,600 and $19,200 before extras. Zonda's 2025 Cost vs. Value Report pins the national average job cost for a mid-range pressure-treated deck addition with railings at $18,263, while the composite version of the same project averages $25,096. HomeAdvisor's member-reported average is lower at $8,319, because its sample includes many small, ground-level, wood decks.

Those three numbers are not in conflict; they describe different decks. The spread inside any single quote comes from height above grade, the number of stair risers, footing depth in frost country, railing material, and whether the builder is reusing an assessed frame or pouring new piers. HomeAdvisor puts labor alone at $15–$35, and a permit at $230–$500. When two proposals differ by more than a third, one of them is almost always assuming a different structure, not a different board.

Which decking material do most homeowners choose right now?

In the 2026 U.S. Houzz Outdoor Trends Study, 45% of surveyed deck renovators chose composite or plastic decking, ahead of pressure-treated lumber at 37% and cedar or redwood at 15%. That is a platform sample with multiple answers allowed, not a national installation count, but the direction matches what Trex reported in its 2024 results and what Freedonia forecasts for wood-plastic composite. If you are leaning toward a capped board, the composite decking page covers the framing and fastener requirements that change with the product line.

Pressure-treated pine still wins on first cost. HomeAdvisor prices composite boards at $12–$22, and Fixr's installed ladder runs pressure-treated at $15 to $25 per square foot versus composite at $28–$40. The trade is upkeep. Bob Vila's guide budgets $550–$1,300 per year to resand and stain a wood deck, and HomeAdvisor recommends restaining every 2–3 years. Run both paths through the comparison tool over the years you expect to own the house before deciding.

Does a deck pay you back when you sell?

Better than most projects. Zonda's 2025 Cost vs. Value Report estimates a wood deck addition recoups 94.9% of its cost at resale and a composite deck 88.5%, ranking eighth and ninth of every remodeling project tracked. The National Association of REALTORS' 2023 Remodeling Impact Report reached a similar conclusion, estimating 89% recovery on a $16,900 wood deck. Only 9% of REALTORS in that report would recommend adding a deck specifically to sell, so treat the resale figure as a floor on your downside, not the reason to build.

The stronger argument in the NAR data is enjoyment. Homeowners gave a new wood deck a Joy Score of 9.8 / 10, and 74% said they had a greater desire to be home after finishing it. Buyers want one too: NAHB's What Home Buyers Really Want survey found 75% of buyers rate a deck essential or desirable. Yet by our analysis of Census new-housing tables, only 17.9% of new single-family homes completed in 2025 had a deck, down from 19.5% in 2021. The design and build page turns your use into dimensions a builder can price.

How do you know whether to repair, resurface, or replace?

The North American Deck and Railing Association estimates that 30 million of the roughly 60 million decks in the country are past their useful life. The Consumer Product Safety Commission counted about 4,600 emergency-room visits from deck collapses over roughly a decade, and the usual failures are the ledger connection and rotted posts, not the boards you can see. Half of the deck stock being at or past its design life explains why so many resurfacing quotes turn into replacement quotes after the first board comes up.

Fixr puts the national average deck repair at $1,500, and HomeAdvisor's board-replacement average is $2,246. Both are a fraction of a new build, which is why an honest structural assessment is worth asking for before any finish work. The repair and restoration page lists which components should be probed and what a soft joist end means for the rest of the plan.

• Repair when the defect is isolated: a loose rail post, a few cupped boards, a wobbly stair stringer.
• Resurface only after a builder has probed the joists, beam, posts, and ledger and found them sound.
• Replace when the ledger is unflashed and rotted, footings have heaved, or the frame is undersized for the boards you want.

What does code require for guards and stairs?

The International Residential Code, summarized by Decks.com, requires a guard on any deck surface more than 30 inches above grade; the guard must be at least 36 inches tall and its openings cannot pass a 4-inch sphere. California and New York City require 42 inches instead of 36, so a railing kit ordered for one state can be illegal in another. Stair treads, riser heights, and handrail graspability have their own limits, and inspectors check them with a tape.

Railing choice is also the biggest swing item after the structure. HomeAdvisor's ladder runs from composite at $15 to $30 per linear foot up to glass at $100 to $600, with the replacement average at $1,100. Cable systems that preserve a view cost $75–$260 installed. The railing and stair systems page explains post attachment, the detail that most often fails inspection.

Should lighting and built-ins go in the first proposal or later?

Wiring is cheap to rough in before the boards go down and expensive to retrofit afterward. The EIA's 2024 Residential Energy Consumption Survey found 43.4% of occupied U.S. homes leave some outdoor lighting on all night, which is one reason low-voltage LED systems on a 12-volt transformer have become the default. Homewyse prices low-voltage deck lighting at $303–$490 per fixture installed, while HomeAdvisor's landscape-lighting guide lists simpler fixtures at $90–$150.

Built-in benches and planters change drainage and block access to the frame, so mark them on the plan early. The lighting and accessories page covers stair-riser lights, post caps, and how to keep a transformer serviceable. If the deck already exists and simply is not big enough, the additions and extensions page explains why new supports usually cannot borrow load from the old frame.

How long does a deck project take from first call to last inspection?

Bob Vila's cost guide puts a typical build at 3–4 weeks from ground prep to finished deck, including footing inspection and material lead time. Permit review comes before that and varies from a few days to several weeks by jurisdiction. NAR's 2023 report found only 15% of landscape professionals saw rising demand for new wood decks, the lowest of 11 outdoor categories, which in practice means shorter waits for deck crews than for patio and hardscape crews in many markets.

Timing also affects price. In Angi's April 2025 Home Spending Pulse, 71% of surveyed homeowners who had hired a pro in the previous year had postponed a project, while 23% had started early to get ahead of price increases. Shoulder-season starts, late winter in the South and early fall in the North, tend to get faster scheduling and more attention from the builder.

How do you compare three deck proposals fairly?

Ask every builder to price the same drawing: identical footprint, height, stair count, railing system, and named decking line. Then read each proposal for what it assumes rather than what it lists. A resurfacing price that never mentions the ledger, a material-only figure presented as a project total, and a claim that any board needs no maintenance are the three red flags that show up most often. The project request form collects the dimensions and photos a builder needs to give you a comparable number.

Use the deck planning quiz to check your own assumptions, and the homeowner polls to see how other people weighted cost against upkeep. When you are ready, the locations page notes the frost-depth, wind, and moisture issues that change a deck design from Maine to Arizona.