A 14×20 deck costs between $5,600 and $19,600 on average across the USA, or roughly $20 to $70 per square foot installed. Pressure-treated wood sits at the low end, while composite and hardwood decks reach the upper range. Final price depends on material, labor rates, site conditions, permits, and design features. This guide breaks down what homeowners and property managers should expect to pay for a 280-square-foot deck and where the money actually goes.
Average Cost of a 14×20 Deck
A 14×20 deck (280 square feet) typically costs $5,600 to $19,600 installed. Pressure-treated pine averages $20–$30 per square foot, cedar runs $30–$45, composite ranges $40–$60, and tropical hardwood reaches $50–$70 or more. Most homeowners spend around $11,000 for a mid-grade build with standard railings and stairs.
Cost by Material Type
Material is the single biggest variable in deck pricing. Pressure-treated lumber remains the most affordable choice, delivering a complete 14×20 build for $5,600 to $8,400. Cedar and redwood add natural beauty and rot resistance, pushing totals to $8,400 to $12,600. Composite decking, made from recycled plastic and wood fibers, costs $11,200 to $16,800 but eliminates staining and sealing. Tropical hardwoods like ipe deliver decades of service at $14,000 to $19,600 or more, appealing to property owners focused on long-term value over upfront savings.
Labor vs. Materials Breakdown
Labor accounts for roughly 50% to 60% of the total project cost on most 14×20 builds. Materials make up the remaining 40% to 50%, including framing lumber, decking boards, fasteners, joist hangers, post anchors, and railing components. Skilled deck builders typically charge $15 to $35 per square foot for labor alone, depending on regional wage rates, project complexity, and elevation. Multi-level builds, custom railings, and built-in seating raise labor hours significantly. Simple ground-level rectangular decks with standard pickets stay near the lower end of the labor range.
The materials and labor numbers explain the average. The bigger question for most homeowners is what shapes the final price tag once the basics are settled.
Factors That Affect 14×20 Deck Pricing
Several variables push a 14×20 deck above or below the average range. Height matters: a deck more than three feet off the ground requires reinforced footings, larger posts, and code-compliant guardrails, adding $1,500 to $4,000. Design complexity, including angled corners, picture-frame borders, and mixed materials, raises costs 10% to 25%. Decisions like choosing between composite and wood decking shift the lifetime cost more than any other single factor.
Site Conditions, Permits, and Add-Ons
Sloped lots, rocky soil, or limited access drive labor hours up. Permits run $150 to $500 in most U.S. municipalities, and inspections may be required at framing and final stages. Stairs add $100 to $200 per step. Built-in lighting, pergolas, screening, and hot tub reinforcement each add $500 to $5,000. Property managers planning rental upgrades should budget a 10% contingency for unexpected site work, since older homes often need ledger board flashing repairs or footing adjustments before framing begins.
Is a 14×20 Deck Worth the Investment?
A 14×20 deck delivers strong value for both lifestyle and resale. Industry remodeling reports consistently show wood decks recoup roughly 50% to 65% of project costs at sale, and composite decks hold their appearance for 25 to 30 years with minimal upkeep. For landlords and property managers, a well-built deck increases rental appeal and supports higher monthly rates. The smartest path to a durable, code-compliant build starts with working with a licensed deck builder who handles design, permits, and inspection from start to finish.
Conclusion
A 14×20 deck costs $5,600 to $19,600, shaped largely by material choice, labor rates, and site conditions. Knowing the breakdown helps homeowners budget accurately and avoid surprises.
For landlords, property managers, and homeowners, a quality deck adds usable square footage, curb appeal, and measurable property value year after year.
We connect you with vetted deck professionals who deliver transparent pricing and quality workmanship. Get your 14×20 deck quote today with Mr. Local Services.
Frequently Asked Questions
How long does it take to build a 14×20 deck?
Most 14×20 decks take 5 to 10 working days from framing to final inspection, depending on weather, material complexity, and crew size.
Do I need a permit for a 14×20 deck?
Yes. Nearly all U.S. municipalities require a building permit for decks over 200 square feet, costing $150 to $500 depending on location.
Is composite decking cheaper than wood long-term?
Yes. Composite costs more upfront but eliminates annual staining, sealing, and board replacement, saving thousands of dollars over 25 years.
Can I add a 14×20 deck to a mobile home?
Yes, but framing must be self-supporting rather than ledger-attached. Costs run slightly higher due to extra footings and freestanding post structures.
How much does it cost to replace just the boards on a 14×20 deck?
Resurfacing a structurally sound 14×20 deck costs $3,000 to $8,500, depending on the new decking material chosen.