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Build & Outdoor Living
Free Deck Cost Calculator
Pick your size and build tier for an instant installed-cost range.
The Short Answer
A standard pressure-treated or composite deck in Northern Virginia starts at $55 per square foot; premium composite builds start at $75/sq ft; and screened porches with a roof start at $110/sq ft. This calculator estimates your range by size and tier.
Free Interactive Tool
Deck Cost Calculator
Pick your size and build tier for an instant installed-cost range.
Frequently Asked Questions
Free Deck Cost Calculator FAQs
Do I need a permit for a deck?
Virtually every attached deck in Fairfax, Loudoun, Arlington, and Prince William County requires a building permit and inspection — use our free Permit & HOA Checker for county-specific details.
What's the difference between standard and premium composite?
Standard composite uses base-tier boards; premium composite adds upgraded railings, lighting, and higher-end board lines, which is reflected in the higher $75+/sq ft pricing.
How long does a deck build take?
Most single-project builds take 1-3 weeks of on-site construction, though permit review timelines vary by county and add to the overall project timeline.
When are guardrails required?
Guardrails are required once the deck surface sits more than 30 inches above grade, and footings must bear on solid ground at least 24 inches below grade.
Do I need to sign a contract to use the Free Deck Cost Calculator?
No. It is a free planning tool with no obligation — use it as many times as you like, and nothing is booked until you tell us to book it.
How is my result different from a final quote?
Your result is a planning estimate. We confirm exact pricing with a free on-site visit and send a written, line-item quote within 24-48 hours.
Why do you ask for my contact info before showing the result?
So we can save your estimate and text or email it to you. We never ask for payment information, and you can always call or text (703) 650-5655 directly instead.
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No cost, no obligation — and a written quote whenever you're ready.