Deck Builders Near Me in Montgomery County, MD? Build Your Own Deck With an A-DIY Kit

You can do either. Deck contractors work across Montgomery County, from Silver Spring and Bethesda to Germantown and Clarksburg, so ask for two or three written quotes, an active Maryland Home Improvement Commission license and proof of insurance. If you would rather build it yourself, A-DIY delivers professionally engineered wood and composite deck kits countywide, and you or a local handyman can assemble one with just a drill.

Contractor prices vary with size, height, materials and permit drawings, so collect several written quotes. A-DIY deck kits run from $3,699 for a 6x12 pressure-treated kit to $12,799 for a 16x28 composite kit, and a 12x12 is $4,899 in wood or $5,700 in composite. Because labor is a large share of a contractor’s price, homeowners typically spend 30–50% less by building a kit themselves. Budget separately for the permit fee.

With A-DIY, a 12x12 deck kit is $4,899 in pressure-treated wood or $5,700 in composite. A 12x16 composite kit is $6,600; the closest wood size is 12x18 at $5,969. A 16x20 kit is $7,600 in wood or $10,199 in composite. Framing, decking, footings and hardware are included.

In most of the County, yes. The Montgomery County Department of Permitting Services (DPS) requires a building permit for all decks, regardless of height above grade, and it covers unincorporated communities such as Silver Spring, Bethesda, Wheaton, Germantown and Potomac. The Cities of Rockville and Gaithersburg run their own permit offices, and some towns, such as the Town of Chevy Chase, require a town permit on top of the County permit.

Where DPS issues permits, there is no size or height cutoff. DPS requires a permit for every deck, so the 200-square-foot exemption in the model residential code does not apply. Inside Rockville, only a patio or deck no more than 7-3/4 inches above ground is exempt, and Gaithersburg requires a permit for all new decks. A-DIY kits sit 15–17 inches off the ground, so plan on a permit wherever you live in the County.

Many customers use their A-DIY decks for hot tubs and saunas. Applicable configurations are engineered to hold up to 15,000 lbs when properly assembled and supported, but tub weight, placement and wiring vary, so talk to a deck specialist before you order and check local electrical and permit rules.

DPS deck guidelines call for footings at least 30 inches deep, bearing on solid soil. A freestanding (floating) deck that is not bolted to the house still needs a permit, and whether a ground-level footing system is accepted is up to the plan reviewer. A-DIY kits are freestanding on Tuff Block footings, so include the footing details with your application and ask your permit office what it will approve for your lot.

Montgomery County has a true four-season climate. Winter brings a mix of snow, sleet and freezing rain, with about 14 inches of snow a year at Reagan National and about 21 inches at Dulles, and upcounty areas can see more. Freeze-thaw cycles can shift shallow footings, while humid summers and frequent thunderstorms test drainage and finishes. Seal pressure-treated wood every one to two years or choose composite decking.

Spring and fall are the most comfortable seasons to build. Because every deck needs a permit here, start your application over the winter so plans can be reviewed and approved before your delivery date. Summer builds work too if you start early in the day and keep an eye on afternoon thunderstorms.

Pressure-treated wood kits come in 15 sizes: Standard 12x12, 12x18, 12x20, 12x24, 12x28, 16x16, 16x20, 16x24 and 16x28, plus Compact 6x12, 6x16, 6x20, 8x12, 8x16 and 8x20. Composite kits come in 9 sizes from 12x12 to 16x28 in Amazon Gray or Forest Wood. Custom sizes are available on request.

Yes. A-DIY ships by LTL freight throughout Montgomery County, including Silver Spring, Bethesda, Rockville, Gaithersburg, Germantown, Wheaton, Potomac, Olney, Clarksburg and Damascus. The carrier calls ahead to schedule curbside delivery, typically within 10–14 business days.

Pay in full, or hold today’s price with A-DIY Reserve, a $250 non-refundable deposit. You can also split the cost into 0% payments over up to 8 months, or build now and pay later through Affirm, Klarna or Shop Pay, subject to approval.