New deck or porch, $0 down. Free on-site design consult + written ballpark — free. UD Hotline 24/7 · (240) 880-2108Office · (240) 880-2108office@udroofing.com
United Developers · Decks & Porches

Decks & porches built like the rest of the house.

Pressure-treated and composite decks, covered porches, code-compliant rails and stairs — engineered, permitted, and flashed at the house by a roofing-born general contractor.

Free on-site design consult anywhere in Maryland & Virginia. You get a written Good/Better/Best ballpark — and it's yours either way.

Configure Your Deck — Live Ballpark →Book a Free Design Consult
★★★★★130+ reviewsA+ BBBMHIC #111971 · VA Class A #2705183185
FREE ON-SITE DESIGN CONSULT

Real measurements, real options, a real number — before you commit to anything

  • ✅ On-site measure of grade, height & sightlines FREE
  • ✅ Pressure-treated vs. composite priced side by side FREE
  • ✅ Permit & footing requirements checked for your county FREE
  • ✅ Written Good/Better/Best ballpark — yours to keep either way

Want a number right now? The Project Builder gives you a live deck & porch ballpark in about two minutes — then the on-site visit confirms it in writing.

★★★★★ 130+ Google reviews · A+ BBB · MHIC #111971 · VA Class A #2705183185

Free deck & porch estimate

30 seconds. A real person confirms within one business hour (8am–7pm).

By submitting you agree United Developers may call or text you about your estimate, including by autodialed/automated means and AI voice. Consent is not a condition of purchase. Msg/data rates may apply. Reply STOP to opt out.

Prefer to talk? (240) 880-2108

Free on-site design consult + written Good/Better/Best ballpark — free. You keep the numbers either way. $0-down financing available.

Book My Free Design Consult →
Good / Better / Best

Three ways to build it — priced honestly

Typical Maryland & Virginia ranges for an average single-family deck. Size, height, stairs, and site conditions move the number — every price is confirmed on-site, in writing.

Good

Pressure-treated deck

$9,000–$15,000

The classic wood deck — strong, code-compliant, and the most budget-friendly way to add real outdoor living space.

  • Pressure-treated framing & decking
  • Flashed ledger connection at the house
  • Code-compliant guards & stairs
  • Permit & county inspections handled
Better

Composite deck

$14,000–$24,000

Composite decking on pressure-treated framing — no staining, no splinters, no rot, and color that holds up season after season.

  • Composite deck boards, hidden fasteners
  • Composite or aluminum rail options
  • Flashed ledger + proper drainage details
  • Permit & county inspections handled
Best

Covered porch or premium build

$22,000–$38,000

A covered porch with a roof that ties into your existing shingles correctly — or a premium composite build with upgraded rails and low-voltage lighting.

  • Porch roof framed & flashed by roofers
  • Premium composite + upgraded rail systems
  • Low-voltage stair & rail lighting
  • Ceiling, fan-rated blocking & trim options

Typical ranges, not quotes — confirmed on-site in writing. Want a live number now? Configure your deck in the Project Builder →

Materials

Pressure-treated vs. composite

Pressure-treated woodComposite decking
Typical project cost*$9,000–$15,000$14,000–$24,000 ($22,000–$38,000 with premium rails & lighting)
MaintenanceStain or seal every 2–3 years to prevent graying, checking, and splintersNo staining or sealing — soap-and-water cleaning only
Expected life15–25 years with consistent upkeep25–30+ years; most brands carry long fade-and-stain warranties
Feel & lookReal wood grain; can warp, check, and splinter over timeConsistent color and texture; stays smooth underfoot
Best forTight budgets and owners who don't mind maintenanceSet-it-and-forget-it outdoor living; strongest long-term value

*Typical Maryland & Virginia ranges for an average single-family deck — square footage, height off grade, stairs, and rail choices move the number. We quote both systems side by side, in writing, confirmed on-site.

Permits, Footings & Code

The part of the deck you never see is the part that matters

Permits — we pull them

Most Maryland and Virginia jurisdictions require a building permit for attached decks and most freestanding decks, with plan review before work starts. We prepare the drawings, pull the permit, and schedule every county inspection — you never touch the paperwork.

Footings below the frost line

Deck posts bear on concrete footings dug below the local frost line and inspected by the county before framing begins. Skipping that step is how decks heave, sag, and pull away from the house — ours are dug, poured, and signed off before a single joist goes up.

Rails & stairs built to code

Most MD & VA jurisdictions follow the residential code: guards are required on decks more than 30 inches above grade, typically 36 inches high with balusters spaced so a 4-inch sphere can't pass, plus graspable handrails and consistent riser heights on stairs. We build to your county's adopted code and the inspector verifies it.

And the detail most builders get wrong: the ledger connection. Where the deck bolts to the house is where water gets in and where decks fail. We're roofers first — the ledger gets properly flashed and integrated with the housewrap, so the connection stays dry for the life of the deck.

How It Works

From sketch to final inspection

One team, one contract, one accountable schedule — with the county inspecting the work at every required stage.

1

On-site design consult

We measure the site — grade, height, doors, sightlines, sun — talk through how you'll actually use the space, and leave you a written Good/Better/Best ballpark. No pressure, no obligation.

Day 1 · Free
2

Materials, rails & options

Pressure-treated and composite priced side by side against your actual layout, with rail styles, stair runs, and lighting options you can see and hold. $0-down financing from 12 to 180 months (on approved credit) is quoted alongside.

Your call, real numbers
3

Permit & footings

We submit drawings, pull the county permit, then dig and pour footings below the frost line. The county inspects the holes before concrete and the framing before decking — that's how it's supposed to work, and we schedule all of it.

County-inspected
4

Framing, decking, rails & lighting

Flashed ledger, framed structure, decking, code-compliant guards and stairs — and on covered porches, a roof structure flashed into your existing shingles by people who do roofs for a living. Most decks take about 1–2 weeks on site.

1–2 weeks on site, typical
5

Final inspection, walkthrough & warranty

County final inspection, full site cleanup with a magnet sweep for fasteners, and a walkthrough of the finished build — then the manufacturer's warranty plus our 2-year workmanship warranty, in writing.

In writing
Why United Developers

Credentials on paper, not just on the truck

Family-owned and operating across Maryland & Virginia since 2005. Every contract carries our license numbers, every crew is fully insured, and every job is backed in writing.

650+exterior projects since 2005
4.9★130+ Google reviews
A+BBB Accredited
GAFFactory-Certified contractor
2-yearworkmanship warranty
MD & VALicensed & insured · MHIC #111971 · VA Class A #2705183185
$0 downfinancing, 12–180 months, on approved credit
Plan the Whole Project

Deck plus roof, siding, or a whole remodel? Configure it all at once.

The Project Builder lets you scope your deck alongside anything else the house needs — pick your areas, choose Good/Better/Best, and watch the ballpark update live. One team, one written scope, one plan.

Configure Your Project — See Your Ballpark Live →
Common Questions

Straight answers

Do I need a permit to build a deck in Maryland or Virginia?

In most Maryland and Virginia jurisdictions, yes — attached decks and most freestanding decks require a building permit, with footing and framing inspections along the way. We pull the permit, schedule the county inspections, and build to the local code, so you never touch the paperwork.

Pressure-treated or composite — which should I pick?

Pressure-treated lumber is the budget leader but needs staining or sealing every couple of years. Composite costs more up front, never needs staining, and won't splinter or rot — most owners come out ahead over the life of the deck. We price both against your actual layout so you compare real numbers.

What does a new deck or porch cost in Maryland and Virginia?

Typical projects run $9,000–$15,000 for pressure-treated, $14,000–$24,000 for composite, and $22,000–$38,000 for a covered porch or a premium composite build with upgraded rails and lighting. These are typical ranges, not quotes — size, height, stairs, and site conditions move the number, and every price is confirmed on-site in writing. $0-down financing is available.

How long does a deck or porch project take?

Permit review time varies by county — typically a few weeks. Once the permit is in hand, most decks are built in about 1–2 weeks on site, including footings, framing, decking, rails, and stairs. Covered porches run longer because of the roof structure and inspections.

Why hire a roofing contractor to build a deck or porch?

Because the two places decks and porches fail are water details: the ledger connection at the house and the porch roof tie-in. We're a roofing-born general contractor — GAF Factory-Certified — so the ledger gets flashed correctly and a covered porch roof integrates with your existing shingles and gutters the way a roofer would do it, under one contract and one warranty. See everything we build on the general contracting page.

Free design consult. Real options. A real number.

Anywhere in Maryland & Virginia. You keep the written ballpark either way.

On-site measure & design consultIncluded free
Pressure-treated & composite quoted side by sideIncluded
Permit & footing requirements checkedIncluded
Written Good/Better/Best ballpark — yours to keepIncluded
You pay today$0
Book My Free Design Consult →Try the Project Builder

Prefer to talk? (240) 880-2108

Areas we serve

Local crews across Montgomery County MD and Northern Virginia.

Alexandria, VAArlington, VABethesda, MDChevy Chase, MDFairfax, VAGaithersburg, MDGermantown, MDKensington, MDMcLean, VAOlney, MDPotomac, MDRockville, MDSilver Spring, MDVienna, VAWheaton, MD

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