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

Both are options. Brentwood is the largest hamlet on Long Island, and many Suffolk County deck contractors work here, especially in spring. If you hire one, compare two or three written quotes and ask about insurance and recent Town of Islip permits. If you would rather build it yourself, A-DIY delivers professionally engineered wood and composite deck kits to Brentwood homes, and you or a local handyman can assemble one with just a drill.

Contractor pricing depends on size, materials, stairs, railings and permit work, so written quotes are the only reliable number. Labor is a large share of that price, which is why doing the work yourself saves the most. A-DIY deck kits are priced up front, from $3,699 for a 6x12 pressure-treated kit to $12,799 for a 16x28 composite kit, and homeowners typically spend 30–50% less than hiring a contractor.

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.

It depends mostly on height. Brentwood is an unincorporated hamlet in the Town of Islip, so deck permits go through the Town of Islip Building Division, part of the Department of Planning and Development. Town code exempts a roofless deck on a one- or two-family lot that is no more than 18 inches above adjacent grade and meets yard requirements. Decks above 18 inches need a permit from the Town.

In the Town of Islip, the permit exemption for roofless decks is based on height: no more than 18 inches above adjacent grade, on a one- or two-family lot, without violating yard setbacks. A-DIY kits assemble 15–17 inches off the ground, but a sloped yard can raise one side, and zoning setbacks still apply to any size. Check your survey and confirm with the Building Division before ordering a large kit.

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.

Attached decks and decks that need a permit generally require footings below the frost line, and the Town of Islip Building Division can tell you the depth it inspects for. Freestanding ground-level decks work differently: A-DIY kits sit on included Tuff Block footings placed on firm, level, compacted ground, so there are no concrete piers to dig. Check that the deck is still level each spring after the freeze-thaw season.

Often, yes. A floating deck is not attached to the house, so it can go anywhere in the yard, and a low deck that meets setbacks can stay within the Town of Islip’s 18-inch exemption. Choose a spot that drains well, strip sod and loose topsoil, then compact and level the base before setting the Tuff Block footings. Keep downspouts aimed away from the deck.

Most Brentwood homeowners build between April and October, once the ground firms up and before late-fall storms arrive. Ordering in winter or early spring leaves time for delivery, which typically takes 10–14 business days, so your kit is on site when the weather turns. Seal pressure-treated wood before winter, or choose composite to skip staining altogether.

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 to Brentwood and surrounding communities such as North Bay Shore, Bay Shore, Edgewood, Central Islip, Deer Park and Hauppauge. The carrier calls ahead to schedule curbside delivery, typically within 10–14 business days, so line up a helper to carry components to your backyard.

You can pay in full, split your order into 0% payments for up to 8 months, or build now and pay later through Affirm, Klarna or Shop Pay, subject to approval. If you are still measuring or waiting on the Town, an A-DIY Reserve $250 non-refundable deposit holds today’s price.