Deck Project · Fairfax, VA

Composite Deck Replacement in Fairfax, VA

A 1990s pressure-treated deck off the rear of a Fairfax colonial had reached the end of its service life — cupped boards, a loose railing, and moss holding water on the surface. The rebuild keeps the same footprint but changes the material, the railing, and the stair location.

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Representative Project ExampleFairfax County

Before & After

Weathered gray pressure-treated deck with loose railing behind a Fairfax VA colonial before replacementBefore
Weathered gray pressure-treated deck with loose railing behind a Fairfax VA colonial before replacement.
New gray composite deck with black aluminum railings and wide stairs behind a Fairfax VA brick colonialAfter
New gray composite deck with black aluminum railings and wide stairs behind a Fairfax VA brick colonial.

Project pages are representative examples of the scope, materials, and planning ranges typical of this type of work in Northern Virginia. They are not records of a specific customer's project, and photographs are illustrative. Every price becomes real only after an on-site visit and a written scope of work.

Project Details

Location
Fairfax, VA (Fairfax County)
Project type
Full deck replacement
Approximate size
16 x 20 ft, single level
Decking
Capped composite, gray
Railing
Black aluminum
Planning range
$24,000 – $32,000
On-site duration
2 – 3 weeks

The Challenge

  • The original deck boards were cupped and holding water, and several stair treads flexed underfoot.
  • The ledger detail on the original build had no visible flashing, which is the most common source of rot behind a Northern Virginia deck.
  • The stair run landed in the middle of the usable yard, splitting the lawn in two.

What We Did

  • Full demolition and haul-away of the existing deck, then inspection of the rim joist and sheathing behind the ledger before any new framing went up.
  • New pressure-treated framing with properly flashed ledger detail and footings sized for the load and local frost depth.
  • Composite decking installed with hidden fasteners so there are no screw heads in the walking surface.
  • Stairs relocated to the side of the deck to open the lawn back up.

The Result

  • A low-maintenance surface that needs washing rather than annual sealing.
  • A single continuous lawn instead of two halves split by a stair run.
  • Railing sightlines opened up with slim black balusters rather than wide wood spindles.

Deck Planning Ranges Near Fairfax, VA

Deck repair

  • Small board or railing repair$1,500 – $5,000
  • Moderate repair or partial resurfacing$5,000 – $12,000
  • Significant framing, stair, railing, or structural repair$10,000 – $20,000+

New wood decks

  • Small pressure-treated wood deck$8,000 – $14,000
  • Approximately 16×20 pressure-treated deck$9,000 – $17,000

New composite decks

  • Small 12×16 composite deck$14,000 – $24,000
  • Approximately 16×20 standard composite deck$20,000 – $32,000
  • Approximately 300–400 sq ft premium composite deck$24,000 – $40,000
  • Approximately 500 sq ft or multi-level deck$32,000 – $55,000+

Patio installation

  • Approximately 250–300 sq ft concrete paver patio$14,000 – $22,000
  • Larger or upgraded paver patio$22,000 – $35,000
  • Approximately 350–450 sq ft premium stone or detailed patio$28,000 – $48,000+

What changes the price

Deck size, material selection, framing condition, deck height, stair runs, railing type, demolition, site access, drainage, and design complexity all move the number.

Displayed prices are general Northern Virginia planning ranges and are not guaranteed estimates. Final pricing depends on dimensions, materials, framing condition, deck height, stairs, railings, demolition, property access, drainage, design complexity, engineering, permit requirements, HOA requirements, and the final written scope of work.

Our Deck Building Process

  1. Step 1

    Initial consultation

    We talk through how you want to use the space, rough size, materials you like, and the budget range you are planning around.

  2. Step 2

    Property and structure evaluation

    On site we look at grade, door heights, access, drainage, and — for existing decks — the condition of framing, posts, and stairs.

  3. Step 3

    Design and material selection

    Footprint, stair placement, railing style, and decking selections are settled before pricing is finalized.

  4. Step 4

    Written scope and estimate

    You get a written scope of work that states what is included so the number is tied to something specific.

  5. Step 5

    Permit and HOA coordination

    Requirements depend on the property, jurisdiction, and scope. We confirm what applies to your project and what we will handle before work begins.

  6. Step 6

    Construction

    Framing, decking, stairs, railings, and any built-in features, with the site cleaned at the end of each phase.

  7. Step 7

    Final walkthrough

    We walk the finished deck with you, review care instructions for the material you chose, and close out any punch items.

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Nearby Service Areas

Planning a Similar Deck Project in Fairfax, VA?

Tell us the approximate size, the material you are considering, the height off your rear door, and whether an existing deck needs removal. We will schedule a free in-home site visit and put a written scope in front of you.

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