Deck Construction Cost Calculator
Get an instant free estimate for building a deck based on the size, decking material, elevation, and railing — for pressure-treated, cedar, redwood, composite, PVC, and tropical hardwood decks.
Free Deck Construction Cost Calculator
Use this calculator to calculate the cost of deck construction near you for free. Enter your ZIP code for a localized estimate.
Deck Dimensions
Enter the length and width of the deck in feet. A common deck is around 12 × 16 ft (192 sq ft).
Decking Material:
Deck Elevation:
Railing:
Additional Features:
Estimates are instant and require no contact information.
Based on inputs, your Deck Construction project cost is approximately:
Note that the cost above is purely an estimate.
The actual cost may be higher or lower depending on the contractor's quote.
How Much Does Deck Construction Cost?
Building a deck runs $25 to $60 per square foot installed, so a typical 200-to-400 sq ft deck lands around $5,000 to $20,000. A basic pressure-treated ground-level deck sits at the bottom of that range; a large elevated deck in premium materials with premium railing at the top.
The decking material is the biggest lever — pressure-treated at the bottom, tropical hardwood at the top — while elevation (ground vs. raised vs. second-story) and railing adjust it, and the square footage sets the scale. Add-ons like stairs, built-in seating, a pergola, lighting, the permit, and old-deck removal stack on top. Use the calculator above to localize the estimate, then read on for what drives your quote.
Deck Construction Cost by Material & Elevation
Installed Cost Per Square Foot by Material
| Material | Installed / Sq Ft | Maintenance |
|---|---|---|
| Pressure-Treated | $25 – $35 | High (seal/stain) |
| Cedar | $35 – $45 | Moderate |
| Redwood | $40 – $50 | Moderate |
| Composite | $40 – $50 | Low |
| PVC / Synthetic | $45 – $55 | Very Low |
| Tropical Hardwood | $50 – $65 | Moderate (oil) |
Source: Baseline labor derived from U.S. Bureau of Labor Statistics, Carpenters (SOC 47-2031); ranges reflect our aggregated contractor quote data across U.S. markets.
Elevation Multiplier & Railing
| Factor | Adjustment | Why |
|---|---|---|
| Ground-Level / Floating | Baseline | Minimal substructure, often no railing. |
| Raised (With Stairs) | +20% | Footings, taller posts, stairs, railing. |
| Elevated / Second-Story | +45% | Deep footings, tall reinforced posts. |
| Premium Railing | $50–$90 / lin ft | Aluminum, cable, or glass vs. wood. |
Source: U.S. Bureau of Labor Statistics, Carpenters (SOC 47-2031) for baseline labor, combined with our aggregated quote ranges from licensed deck builders. Regional adjustments applied via the calculator above.
The 6 Factors That Drive Your Quote
1. Deck Size
Decks are priced per square foot — length × width — and both materials and labor scale with it. A common residential deck is 12×16 ft (192 sq ft) to 16×20 ft (320 sq ft); larger or multi-level decks cost proportionally more. Square footage is the baseline the material rate and elevation multiply against.
2. Decking Material
The biggest cost driver, spanning roughly 2x. Pressure-treated (~$28/sq ft installed) is the economical baseline; cedar (~$38) and redwood (~$45) are natural woods; composite (~$42) is low-maintenance; PVC (~$50) is fully synthetic; and tropical hardwood like ipe (~$55) is the premium tier. Material sets both the look and the maintenance you'll live with.
3. Elevation
Height drives the substructure. Ground-level or floating is the baseline; a raised deck with stairs adds about 20% for footings, taller posts, and stairs; and an elevated or second-story deck adds about 45% for deep footings, tall reinforced posts, and heavier bracing. Elevation also determines whether railing is required by code.
4. Railing
Priced by the deck's perimeter and required on any deck more than about 30 inches above grade. Standard wood or composite rail is the economical choice, while premium aluminum, cable, or glass costs two to three times more per foot. On a typical deck, railing alone can add $1,000 to $3,000-plus to the total.
5. Permits & Code
Attached, raised, or larger decks almost always need a permit and inspection (~$400), which verify footing depth, joist sizing, the ledger attachment, railing, and stairs. This is where safety lives — deck collapses usually trace to unpermitted, improperly built structures — so it's a small, non-negotiable line item on most projects.
6. Features & Removal
Stairs to grade (~$600), built-in bench seating (~$800), an attached pergola (~$2,500), and low-voltage deck and step lighting (~$1.50/sq ft) round out the project. Replacing an existing deck adds old-deck removal and disposal (~$3/sq ft). These features shape both the budget and how the deck actually gets used.
Wood or Composite — Which Should You Build?
The material choice sets your budget and your weekends for the next two decades. Here's the honest breakdown.
Lean toward wood when
- Upfront budget is tight: pressure-treated is the lowest-cost way to get a solid, code-built deck.
- You want a natural look: cedar and redwood have a warmth composite still can't fully match.
- You may move soon: a wood deck costs less now and you won't be around for years of upkeep.
- You don't mind maintenance: a weekend of sealing every few years keeps wood looking good.
Lean toward composite or PVC when
- You're staying put: the saved maintenance over 20-30 years offsets the higher upfront cost.
- You want zero staining: composite and PVC never need sealing and resist rot, fade, and splinters.
- The deck sees hard use: kids, pets, and sun are tougher on wood than on synthetics.
- You value the warranty: 25-to-50-year coverage is peace of mind wood can't offer.
How to Vet and Hire a Deck Builder
A deck is a structure people stand on, so vet the builder's code knowledge and the ledger detail — the parts that keep it from failing — not just the price. Before you hire:
- Confirm they pull the permit. A builder who wants to skip the permit is skipping the inspection that keeps the deck safe.
- Verify licensing and insurance. Check the contractor is licensed where required and carries liability and workers' comp coverage.
- Ask how they attach and flash the ledger. The ledger-to-house connection is the most common failure point — proper flashing and fasteners are non-negotiable.
What a complete quote should spell out
- The deck size, decking material, framing material, and fastener type (hidden vs. face-screwed).
- The footing depth, elevation, and railing type, plus stairs.
- Whether the permit, inspections, old-deck removal, lighting, seating, and a pergola are included or extra.
- The warranty on materials and labor, and the build timeline including footing and framing inspections.
Methodology & Sources
This calculator starts from an installed per-square-foot rate set by your decking material(pressure-treated, cedar, redwood, composite, PVC, or tropical hardwood), applies an elevation multiplier(ground, raised, or elevated), adds railing priced on the deck perimeter, and finally adds flat- and area-based add-ons(stairs, built-in seating, a pergola, lighting, the permit, and old-deck removal). The result is adjusted to your ZIP code's regional price level. In short: Area × (Material Rate × Elevation) + Railing + Add-ons, localized by region. Baseline labor is anchored to federal wage data for carpenters and calibrated against our aggregated quotes from licensed deck builders.
Data sources:
- U.S. Bureau of Labor Statistics — Carpenters (SOC 47-2031)
- North American Deck & Railing Association (NADRA)
- American Wood Council — DCA6 Prescriptive Residential Deck Guide
For a full explanation of how every calculator on this site is built and localized, see our methodology page.
About the Reviewer
Pool & Outdoor Living Contractor
Outdoor-living contractor specializing in pools, decks, fences, and backyard structures.
View full profile & credentials →Frequently Asked Questions
Installed, decks run about $25 to $60 per square foot, so a typical 200-to-400 sq ft deck is $5,000 to $20,000 depending on material and complexity. A basic pressure-treated ground-level deck might be $5,000 to $10,000, a mid-range composite deck $10,000 to $20,000, and a large elevated deck in premium materials with railing can top $25,000 to $35,000. The decking material, size, height, railing, and features like stairs are the main drivers, with labor usually about half the total.
It's a trade-off between upfront cost and maintenance. Pressure-treated wood is cheapest and strong but needs regular sealing and can warp. Cedar and redwood are naturally beautiful and rot-resistant but still need upkeep and cost more. Composite (like Trex) is the popular low-maintenance premium pick — never needs staining and resists rot and fading. PVC/synthetic is fully weatherproof and lightweight. Tropical hardwoods like ipe are gorgeous and extremely durable but expensive. Pressure-treated gives the best upfront value; composite the best long-term value.
Both are natural softwoods prized for looks and built-in rot and insect resistance, but they differ in tone and cost. Cedar is lighter, more widely available, and a bit cheaper — a warm, mid-range wood deck. Redwood is a premium step up: richer reddish color, tight straight grain, and excellent stability, at a higher price that's most common on the West Coast where it's local. Both still need periodic sealing or staining to hold their color, and both cost more than pressure-treated but less than most composites. Choose cedar for value, redwood for a premium natural look.
For long-term owners, usually yes. Composite costs roughly 30 to 60% more than pressure-treated upfront, but it never needs staining or sealing and resists rot, insects, fading, and splinters, with 25-to-50-year warranties. Over 20 to 30 years the saved maintenance often offsets the higher initial price, and it keeps looking fresh far longer. Wood is cheaper to install and can make sense if you don't mind the upkeep or plan to move soon. Composite wins for low-maintenance, long-term ownership; wood for a tighter upfront budget.
Height is a real multiplier. A ground-level or floating deck is cheapest — minimal substructure, short posts, often no railing or stairs. A standard raised deck (a few feet up, typical for a back door) adds about 20% for footings, taller posts, stairs, and required railing. An elevated or second-story deck is the priciest, adding about 45% for deep footings, tall reinforced posts, heavier bracing, and long stairs. Going from ground-level to elevated can raise the per-square-foot cost 40%-plus before the added railing and stairs.
Railing is a significant line item priced by the deck's perimeter. Standard pressure-treated or composite rail runs about $20 to $30 per linear foot installed; premium aluminum, cable, or glass runs $50 to $90-plus. On a typical deck that's often $1,000 to $3,000-plus. Code requires railing on any deck more than about 30 inches above grade, with set height (usually 36 to 42 inches) and baluster spacing (max 4 inches). Ground-level decks may skip it entirely — one reason they're cheaper.
In most places, yes — decks attached to the house, raised decks, and decks over a certain size or height almost always need a permit and inspection. Permits verify code compliance on the things that fail: footing depth, joist sizing, the ledger attachment to the house, railing height and baluster spacing, and stair construction. Building without a required permit risks fines, forced removal, sale problems, and genuine safety hazards — deck collapses often trace to unpermitted work. Permit fees typically run $200 to $500, and a good builder handles it.
Beyond the deck surface, common extras are stairs down to grade (~$600), built-in bench seating (~$800), an attached pergola or shade structure (~$2,500), low-voltage deck and step lighting (~$1.50/sq ft), and the permit and inspection (~$400). If you're replacing an existing deck, old-deck removal and disposal runs about $3/sq ft. Each is offered as an add-on here so your estimate reflects the full project, not just the boards and framing.
It depends on material and care. Pressure-treated, cedar, and redwood last about 15 to 25 years with regular sealing and staining. Composite lasts 25 to 30-plus years and PVC 30 to 50, both with minimal maintenance. Tropical hardwoods like ipe can last 40 to 75 years. Regardless of the surface board, the pressure-treated framing, proper drainage, and a well-flashed ledger connection are what determine longevity — routine inspection of the framing, fasteners, and ledger keeps any deck safe for its full lifespan.
A typical residential deck takes about 1 to 3 weeks start to finish, with roughly 1 to 2 weeks of actual construction. The timeline covers design and permitting (days to weeks before work begins), setting and curing footings, framing the substructure, laying the boards, and installing railing and stairs. Simple ground-level decks go fast; large, elevated, or multi-level decks in premium materials take longer. Weather, inspection scheduling (footings usually need an inspection before framing), and material lead times can stretch the schedule.