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

Both are options. Contractors across the I-270 corridor build custom decks in Gaithersburg, so compare two or three written quotes and check each company’s MHIC license, insurance and recent Montgomery County work. If you would rather build your own deck, A-DIY delivers professionally engineered wood and composite deck kits to Gaithersburg homes, and you or a local handyman can assemble one with just a drill.

Price depends on size, material, height, footings, permits and local labor. A-DIY deck kits range from $3,699 for a 6x12 pressure-treated kit to $12,799 for a 16x28 composite kit. Doing the labor yourself is where the savings come from, and homeowners typically spend 30–50% less than hiring a contractor. Permits, site prep and hired help are not included in kit prices.

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.

Inside City limits, yes. The City of Gaithersburg requires a deck permit for all new residential decks, additions and alterations, issued through Planning & Code Administration at 31 South Summit Avenue. Gaithersburg-addressed homes outside City limits, such as in Montgomery Village, apply to Montgomery County DPS. HOA approval may also be required.

Very little. The City Code exempts only detached, freestanding decks under 25 sq ft and less than 30 inches above grade, so every A-DIY kit size needs a permit inside City limits. Montgomery County DPS sets its own rules for unincorporated areas, so check with DPS if you live outside the City.

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.

Gaithersburg’s code sets frost depth at 30 inches below finished grade, calls for deck footings of at least 18 x 18 x 10 inches and requires decks to be designed for a 60 psf load. Whether a freestanding (floating) deck on surface footings, like A-DIY’s Tuff Block footings, is accepted is up to the City’s building official, so ask during permit review.

Expect hot, humid summers with strong thunderstorms, about 43 inches of precipitation and roughly 21 inches of snow a season at nearby Dulles Airport, plus sleet, ice and freeze-thaw cycles in winter. Choose a well-drained spot, keep board gaps clear, seal wood regularly and clear snow with a plastic shovel.

April through October, with spring and early fall the most comfortable. Because nearly every deck in the City needs a permit, apply over the winter so approval and delivery line up. A-DIY Reserve holds today’s price for a future delivery date with a $250 non-refundable deposit.

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. Kits ship by LTL freight with curbside delivery, typically in 10–14 business days, to Gaithersburg neighborhoods such as Kentlands, Lakelands, Quince Orchard and Olde Towne, and to nearby communities including Montgomery Village, Germantown, Derwood, North Potomac, Rockville and Clarksburg. The carrier calls ahead to schedule.

Choose to pay in full, spread the cost over up to 8 months with 0% split payments, or build now and pay later through Affirm, Klarna or Shop Pay, subject to approval. A-DIY Reserve locks in today’s price with a $250 non-refundable deposit for a later delivery date.