Counting the decks built in the United States each year is harder than it sounds. Building permits capture only the projects that get recorded, and a large share of deck construction never touches a permit office. The North American Deck and Railing Association, the trade group that tracks the category, works from permit records and builder reports, and its own staff concede the real total runs higher than the official numbers. What the data does show is a large, growing market for outdoor structures that shares nearly its entire supply chain with shed building.
Most decks go up in two situations: on new homes as part of the original construction, or as an addition by the homeowner after move-in. The second group matters for builders because it spreads demand across every year of a home’s life instead of concentrating it in the construction phase. Buyers who stretch to buy a house in a seller’s market often defer the deck for a year or two, which means a backlog of demand that shows up after the sale closes.
What the Data Says About Deck Demand
New home sales set the baseline for deck demand. The National Association of Home Builders reported that sales of newly built single-family homes rose 2.2 percent to a seasonally adjusted annual rate of 546,000 units in May, the highest new home sales rate since February 2008. Every one of those homes is a candidate for a deck, either at construction or in the first few years of ownership.
- New home sales at a 546,000 annualized rate, the highest level in more than a decade.
- Existing homeowners adding decks to expand usable outdoor space without moving.
- A large DIY segment that professional builders convert into referrals, repairs, and replacements.
- Replacement demand from older decks that no longer meet current building code.
The gap between recorded and unrecorded projects matters when sizing the market. If half of all decks are built without permits, published permit counts understate demand by a wide margin, and builders who rely only on those numbers will understaff for the spring rush. Treating permit data as a floor rather than a ceiling is a safer planning assumption.
Deck demand also behaves differently across the housing cycle than new construction does. When buyers pause and prices soften, renovation work usually keeps going because homeowners stay put and improve what they own. Builders who plan for that pattern can keep crews busy when the market settles down instead of laying people off, which is exactly why deck work is treated as a counterweight to new-home volume.
How Big Decks Have Gotten
The average deck is measurably larger than it was a few years ago. Industry surveys put the typical do-it-yourself deck at 250 to 300 square feet, up from 175 to 200 square feet in earlier years. The shift reflects bigger backyards on new lots, outdoor kitchens, and homeowners who treat the deck as an outdoor room rather than a landing pad.
Size drives material volume, and the math is simple: a 300-square-foot deck uses roughly 70 percent more framing lumber and decking than a 175-square-foot deck at the same joist spacing. That is why deck projects appeal to builders who already buy lumber in bulk. One caution from the trades: a deck that sits too low traps moisture and rots early, and contractors who accept a too-low deck during construction usually return later to rebuild it.
Bigger decks also change the labor picture. A 250-square-foot deck needs footings dug to frost depth, a ledger flashed correctly against the house, and a railing that passes inspection, none of which scales linearly with surface area. The framing crew matters more than the decking material, and experienced crews stay booked first.
Why decks keep getting bigger
The trend has three drivers. More homeowners work from home and treat the yard as an extension of the house. Standard lot sizes in new developments have grown, giving decks more room to spread. And the falling cost of composite decking makes a larger deck affordable at a given budget.
Size, materials, and labor at a glance
| Deck size | Decking with a 10% waste allowance | Typical use |
|---|---|---|
| 175 to 200 sq ft | 195 to 220 sq ft | Older standard, entry level |
| 250 to 300 sq ft | 275 to 330 sq ft | Current DIY average |
| 400 sq ft and up | 440 sq ft and up | Outdoor kitchen, multi-zone layouts |
Regional Demand and Climate Factors
Deck demand varies sharply by region, and builders who read local markets can time their entry. Cold-weather states build for a short outdoor season and favor materials that shrug off freeze-thaw cycles. Minnesota housing market trends show how a tight regional market with steady new construction keeps deck crews booked from spring thaw through late fall, while warm-weather markets stretch the season longer and shift the product mix toward covered and screened decks.
Regional data also shapes pricing. Markets with high land costs and expensive homes support higher-value decks because the deck adds a larger share of usable living space. Builders entering a new region should price against local permits and local labor rates rather than a national average.
Seasonality is the other regional variable. Northern builders compress most deck revenue into five or six months and use the off-season for repairs, covered structures, and indoor work. Southern builders spread the year more evenly but compete on a longer calendar, which changes how they schedule crews and buy materials.
Materials, Costs, and the Shared Supply Chain
Shed builders and deck builders buy from the same suppliers: lumber yards, fastener distributors, window and door dealers, and roofing material vendors. A builder already stocking framing lumber, deck screws, and trim for sheds can extend the same purchase orders to decks, which improves volume discounts and keeps inventory turning.
Material costs swing with trade policy, and outdoor construction feels those swings directly. Lumber and imported composite components move with tariffs, and tariffs reshape the US real estate market by changing construction costs and buyer strategies at the same time. Deck builders who quote fixed prices should build a materials contingency into their bids or price closer to the start of construction.
- Pressure-treated lumber: lowest upfront cost, requires periodic sealing or staining.
- Composite decking: higher material cost, minimal upkeep, growing share of new decks.
- PVC decking: premium price, best moisture resistance, hollow or foamed cores.
- Fasteners and flashing: small line items that determine whether the deck lasts ten years or thirty.
Lumber prices move in cycles of their own on top of trade policy. Builders who bought framing packages at the top of a spike and priced jobs from those invoices learned the hard way that material cost and job price can drift apart within a single season. The standard hedge is to lock prices with suppliers for quoted jobs and to write escalation clauses into long-delayed projects.
Adding Decks to a Building Business
For shed builders, decks are the closest adjacent market. The customer base overlaps, the materials overlap, and the sales process overlaps: the same buyers who order a shed for the backyard will ask about a deck, a pool house, or a covered patio. Trade associations have noticed and now offer classes that walk builders through deck framing, railing code, and flashing details as an introduction to the category.
- Survey your existing customers and ask every shed buyer whether they plan a deck in the next two years.
- Train one crew on deck framing, railing code, and flashing details before taking paid jobs.
- Add deck samples to your yard or showroom so the sales conversation starts naturally.
- Partner with an established deck builder for overflow work while your own crew ramps up.
- Track the financial side of the new line closely. Financial management strategies for construction companies matter most when a second product line doubles your materials purchasing.
The expansion runs both directions. Deck builders refer shed work to builders they trust, and shed builders refer deck work back. A customer who buys a shed this year and a deck next year becomes two projects from one relationship, which is how small builders grow without spending on marketing.
Pricing the first few decks conservatively is worth it. The goal of the first year is references and repeatable details, not maximum margin, because a deck that fails in year two costs more in reputation than it earned in profit.
Wood Still Leads the Outdoor Living Market
Despite the growth of composites, wood remains the default deck material, and the reasons are practical. Wood decking still dominates the outdoor living market because it is affordable, familiar to every carpenter, and easy to repair, and because pressure-treated lumber is stocked at every yard in the country. Builders who stock both pressure-treated and composite lines can offer buyers a price ladder instead of a single option, which closes more sales.
The deck market rewards builders who treat the project as a system: sound framing, correct flashing, generous footings, and railings that meet code. A deck built that way sells itself, generates referrals, and keeps a crew fed between shed orders. The materials are already on the truck, the customers are already in the yard, and the demand shows up in every new home sales report.