How much does a cedar deck cost?

Cedar decking costs $20–$35 per square foot installed, or $6,000–$10,500 for a 300 sq ft deck. Western red cedar is naturally rot-resistant and dimensionally stable, requiring less maintenance than pressure-treated pine. Cedar weathers to a silver-gray if left unfinished or holds a rich brown tone when stained. It offers a premium wood look at a lower price than ipe or tropical hardwoods.

How much does a deck railing cost?

Deck railing costs $30–$200 per linear foot installed depending on material. Wood railing runs $30–$50/lf, composite railing $45–$65/lf, aluminum/metal $60–$90/lf, and glass railing $120–$200/lf. A 12×16 deck with a 50 lf railing perimeter would add $1,500–$2,500 for wood railing or $6,000–$10,000 for glass railing. Cable railing falls between at $70–$120/lf.

What is the best low-maintenance decking material?

Composite decking (Trex, TimberTech, Fiberon) is the best low-maintenance option. It requires only occasional cleaning with soap and water, never needs staining or sealing, and most brands come with 25–30 year warranties. PVC decking is even more resistant to moisture and staining but costs $30–$50/sqft. For wood lovers, ipe (Brazilian hardwood) requires minimal maintenance and lasts 40+ years but costs $40–$75/sqft installed.

Deck Cost Calculator - Estimate Your Deck Building Cost 2026

Deck Building Cost in 2026: Complete Guide

A new deck is one of the highest-ROI home improvements — adding livable outdoor space that returns 65–80% of its cost at resale. Whether you're building a simple pressure-treated platform or a multi-level composite deck with built-in lighting, understanding the full cost breakdown helps you budget accurately and evaluate contractor bids.

The average deck costs $15–$50 per square foot installed in 2026, with most homeowners spending $8,000–$18,000 for a quality mid-sized deck. Total cost depends on material choice, deck size, railing type, stairs, site conditions, and local labor rates.

Deck Cost by Material (2026)

Material is the single biggest driver of deck cost. Here's what you'll pay per square foot installed, including framing, decking boards, and labor:

Material	Cost per Sq Ft	Lifespan	Maintenance
Pressure-Treated Pine	$15 – $25	15–25 yrs	Stain every 2–3 yrs
Cedar	$20 – $35	20–30 yrs	Seal every 2–4 yrs
Composite (Trex/TimberTech)	$25 – $45	25–30 yrs	Wash annually
PVC Decking	$30 – $50	25–30 yrs	Minimal
Ipe / Exotic Hardwood	$40 – $75	40–75 yrs	Oil every 2–3 yrs

Deck Cost by Size

Common deck sizes and their estimated costs installed. Prices include framing, decking boards, and basic labor but exclude railing and stairs:

Deck Size	Pressure-Treated	Composite	Ipe
10×12 (120 sqft)	$1,800 – $3,000	$3,000 – $5,400	$4,800 – $9,000
12×16 (192 sqft)	$2,880 – $4,800	$4,800 – $8,640	$7,680 – $14,400
16×20 (320 sqft)	$4,800 – $8,000	$8,000 – $14,400	$12,800 – $24,000
20×24 (480 sqft)	$7,200 – $12,000	$12,000 – $21,600	$19,200 – $36,000
24×30 (720 sqft)	$10,800 – $18,000	$18,000 – $32,400	$28,800 – $54,000

Deck Railing Cost

Railing adds $1,500–$10,000+ to a typical deck project and significantly impacts both safety and aesthetics. Here's what you'll pay per linear foot installed in 2026:

Wood (painted or stained): $30–$50 per linear foot. Classic look, requires maintenance every 2–3 years.
Composite railing (Trex, TimberTech): $45–$65/lf. Low maintenance, coordinates with composite decking, wide color selection.
Aluminum/Metal railing: $60–$90/lf. Powder-coated aluminum is rust-proof and virtually maintenance-free. Popular for modern homes.
Cable railing: $70–$120/lf. Sleek, minimal profile that preserves views. Requires stainless steel posts and tensioning hardware.
Glass railing: $120–$200/lf. Premium look for coastal or view properties. Tempered glass panels in aluminum channels. Maximum view preservation.

Deck Cost by Region (2026)

Deck construction costs swing 20–45% by region due to differences in contractor wages, permit requirements, and material freight. In high-cost metros, permit costs typically run $800–$1,500 for attached decks:

Region / Area	PT Deck ($/sqft)	Composite ($/sqft)	Notes
Very-high-cost metro (SF/NYC/coastal CA)	$22 – $36	$36 – $65	Premium coastal rates, salt air treatment
High-cost metro	$19 – $31	$31 – $56	View lots, HOA requirements common
National average	$15 – $25	$25 – $45	Typical pricing nationwide
Low-cost area	$12 – $20	$20 – $36	Rural / lower labor rates, competitive contractor market

Hidden Costs of Deck Building

Permits: $200–$2,000 depending on location and project size. High-cost metros average $800–$1,500.
Demo and disposal: Removing an existing deck costs $5–$10/sqft including haul-away. A 300 sqft deck = $1,500–$3,000.
Footings and posts: Decks over 30" above grade require concrete footings that extend below the frost line. Adds $300–$800 per footing.
Ledger board flashing: Code-required waterproofing where the deck attaches to the house. Prevents rot and water infiltration. Often missed in cheap bids.
Stairs: Each stair set costs $700–$2,000 depending on material and width. Steps with risers and landing pads cost more.
Lighting: Post cap lights, step lights, or string lights add $500–$3,000.
Built-ins: Built-in benches add $500–$1,500; planters $300–$800 each.

Composite vs. Pressure-Treated: Which Is Better?

The choice between composite and pressure-treated comes down to budget, maintenance tolerance, and intended lifespan:

Choose pressure-treated if: Budget is the primary concern, you don't mind periodic staining/sealing, or this is a starter home you plan to sell within 5–7 years.
Choose composite if: You want a deck that lasts 25+ years with minimal maintenance, you're staying long-term, or the home is in a humid/wet climate.
20-year total cost comparison: A PT deck costs ~$5,500 upfront + ~$3,000 in maintenance = ~$8,500. Composite costs ~$10,000 upfront + ~$500 in maintenance = ~$10,500. The gap narrows significantly over time.

How to Save on Deck Construction

Get 3+ bids: Deck pricing varies 20–35% between contractors. Always compare before signing.
Build in fall/winter: Deck contractors are slower October–February. You'll get better pricing and faster scheduling.
Simplify the shape: Rectangular decks cost 15–25% less than L-shaped or multi-angle designs. Each inside corner adds framing complexity.
Use mid-grade composite: Trex Enhance and TimberTech Terrain are mid-range composite options that perform similarly to premium lines at 15–25% lower cost.
Frame in wood, deck in composite: Using pressure-treated framing with composite decking boards saves $3–$8/sqft vs. full composite systems with hidden fasteners.

Frequently Asked Questions

How much does it cost to build a deck?

Building a deck costs $4,500–$22,000 on average, or $15–$50 per square foot installed. A 300 sq ft pressure-treated deck runs $4,500–$7,500, while the same size in composite (Trex) costs $7,500–$13,500. Cost depends on material, size, railing, stairs, and location. In high-cost metros, add 20–45% above national averages.

How much does a composite deck cost?

Composite decking (Trex, TimberTech, Fiberon) costs $25–$45 per square foot installed, or $7,500–$13,500 for a 300 sq ft deck. Premium composite with hidden fasteners and matching railing can reach $50–$70/sqft. Composite costs 40–80% more than pressure-treated upfront but lasts 25–30 years with minimal maintenance.

How much does a pressure-treated deck cost?

Pressure-treated (PT) pine decks cost $15–$25 per square foot installed, or $4,500–$7,500 for a 300 sq ft deck. PT is the most affordable option but requires staining or sealing every 1–3 years. Boards may need replacement after 10–15 years in wet climates.

Do I need a permit to build a deck?

Most municipalities require a permit for attached decks, decks over 30 inches above grade, or decks over 200 sq ft. In high-cost metros, permits cost $800–$1,500 and require structural drawings. Unpermitted decks can cause problems when selling your home.

How does deck cost vary by region?

Deck construction costs swing 20–45% by region. In high-cost metros a 300 sq ft PT deck runs $5,500–$9,500 and composite runs $9,000–$16,000, while lower-cost areas run up to 20% below national. Very-high-cost coastal markets (SF, NYC, coastal California) pay the highest rates. Permits typically add $800–$1,500 in higher-cost jurisdictions.

How long does it take to build a deck?

A 300–400 sq ft deck takes 3–7 days with a 2-person crew. Permit processing adds 1–4 weeks. Plan 4–8 weeks from first contact to project completion in most markets. Complex multi-level decks can take 2–3 weeks of construction time.

Deck Cost Calculator 2026