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Techwood Decks · Deck Cost Guide

How Much Does a Deck Cost in the Bay Area?

Real numbers from recent Techwood Decks projects across the Peninsula and South Bay, so you can plan your budget before we meet.

After: three-level TimberTech deck replacement with aluminum and cable railing in Belmont, CA

Most composite decks we build in the Bay Area land between about $40,000 and $150,000. Smaller elevated decks start under $30,000, and large hillside projects with lighting, outdoor kitchens and pergolas can pass $250,000. The ranges below are real totals from projects we completed in 2025 and 2026, grouped by the type of deck, so you can find the one closest to your yard.

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What drives the price of a deck

  • Size: a 300 sq ft deck and a 900 sq ft deck use very different amounts of framing, decking and labor
  • Height and terrain: ground level is simplest; elevated, second story and hillside decks need taller posts, deeper footings and engineering
  • Railing: aluminum, cable and glass railing each cost more than a simple picket rail, and railing is priced per linear foot
  • Stairs and landings: every stair run adds framing, treads and railing
  • Extras: lighting, pergolas, benches, planters, privacy screens, fire pits and outdoor kitchens
  • Site work: demolition of an old deck, concrete, pavers, turf and drainage

Ways to keep your budget in check

  • Keep the deck close to grade where the yard allows it
  • Choose a simple rectangular shape with fewer corners and stair runs
  • Pick the railing style first; it is often the second largest line item
  • Phase the project: build the deck now, add the pergola or kitchen later
  • Combine the deck with other yard work in one mobilization
  • Visit our San Carlos showroom to compare Trex and TimberTech lines side by side

Real project costs

What recent Techwood Decks projects cost

Every number below is the final total of a real project, including the deck and everything listed with it. Use them as a starting point; your yard, materials and finishes will move the price up or down.

Ground-level decks: $39,000 to $148,000

  • San Mateo: deck, steps and railing, $39,300
  • Foster City: deck, pavers, bench, planter and pergola, $55,500
  • Burlingame: deck, railing, bench, fire pit, pergola, lighting and outdoor kitchen, $72,000
  • Belmont: deck and railing, $88,500
  • Menlo Park: deck, steps and railing, $105,600
  • Pacifica: deck, railing, lights, fence, outdoor kitchen, concrete and retaining wall, $124,800

Elevated decks: $28,000 to $258,000

  • Pacifica: deck and railing, $27,900
  • Millbrae: deck, stairs and railing, $49,000
  • San Carlos: deck, stairs, railing and siding, $56,800
  • El Granada: deck, stairs and pergola, $63,500
  • Santa Clara: deck, stairs, pergola, outdoor kitchen, lighting and railing, $99,300
  • Woodside: deck, railing and bench, $139,700

Second-story decks: $47,000 to $169,000

  • Half Moon Bay: deck and railing, $46,900
  • San Carlos: deck, stairs and railing, $55,200
  • Hillsborough: deck, railing, stairs and lighting, $89,200
  • Belmont: deck, lights, stairs and railing, $150,300
  • San Francisco: deck, railing, planter, concrete, turf, stairs and lighting, $168,800

Hillside and sloped-lot decks: $46,000 to $280,000

  • Oakland: deck, stairs and railing, $45,900
  • Belmont: deck and railing, $145,000
  • Burlingame: deck, stairs, railing, fire pit, lighting, bench, privacy screen and outdoor kitchen, $156,900
  • San Carlos: deck, lighting and railing, $280,200
See photos of these projects

How we price your deck

01

Free visit at your home to measure and talk about how you will use the space

02

3D design so you see the deck, railing and extras before anything is priced

03

Material selection at our San Carlos showroom, with Trex and TimberTech samples

04

Detailed written proposal with every item listed, no hidden allowances

05

Permit, engineering and construction handled by Techwood Decks

06

Final walkthrough and warranty

Deck cost FAQ

Because a deck is rarely just a deck. Two projects with the same square footage can differ by $50,000 or more once you add height, stairs, glass railing, lighting, a pergola or an outdoor kitchen. The lists above show what was included in each total so you can compare like with like.

Up front, yes. PVC and composite boards from Trex and TimberTech cost more than redwood. Over the life of the deck the gap closes, because composite does not need staining or sealing and does not splinter, warp or rot. That is why we focus on composite decks.

Most decks more than 30 inches above grade need a permit in California, and some cities require engineered plans as well. We tell you what your city requires during the first visit and include it in the proposal, so there are no surprises later.

Schedule a free visit. We measure, talk through what you want, build a 3D design and send a written proposal with every item priced. You can also stop by our San Carlos showroom to see materials first, or call 650-640-1668.

Yes. We build across the Peninsula, San Francisco and the South Bay, including San Jose, Santa Clara, Los Gatos and Saratoga. See our full list of service areas in the menu above.

Ready for a real number for your deck?

Tell us about your yard and we will come out, measure, and send you a detailed proposal.

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650-640-1668 · CSLB #1104498