If you’re looking for Lumber that’s ready to work, we can help. At 9 Brothers Building Supply, we stock jobsite staples for framing, repairs, outdoor builds, and general construction. Contractors come to us when they need consistent material and fast turnaround, and homeowners stop in when they want guidance and a clean, straight stack for the weekend project. We serve Long Island and NYC with pickup and delivery, and our crews can load you up quick so you can get back to the site.
We keep a solid mix so you can match the right wood to the job:
Douglas Fir Lumber for strength and structural work
Pine Lumber for general building, trim, and everyday projects
Spruce Lumber for lighter framing and utility use
Rail road ties for borders, steps, and landscape builds where heavy timbers make sense
If you’re matching existing framing or you need specific lengths, call ahead with your list and we’ll tell you what’s moving and what’s in stock.
Contractors use lumber for framing additions, interior buildouts, blocking, temporary bracing, and punch list repairs. Homeowners grab it for deck fixes, shed builds, garden structures, and small carpentry upgrades.
Real tip we give at the counter all the time, check for crown and twist before you start cutting. Pick your straightest pieces for your longest spans, and use the slightly bowed boards for shorter runs where you can pull them into place. If you’re building anything outdoors, plan your layout first so you’re not burning good boards on unnecessary cuts.
You can pick up at our Brentwood yard, and we also have locations in East Setauket and Riverhead. We deliver across Long Island and into NYC when you need material dropped to the site. If access is tight, tell us what you’ve got, driveway, alley, jobsite hours, and we’ll help you plan a clean drop so you’re not restacking everything by hand. We can stage your order, band it up, and load you fast.
Bring your takeoff or your cut list and we’ll help you tighten it up. Stop by and talk to us, or call ahead and we’ll stage your lumber order for pickup or delivery.
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All available sizes:
2″ x 4″ in the following lengths: 8′, 10′, 12′ 14′, and 16′
2″ x 6″ in the following lengths: 12′, 14′, and 16′
2″ x 8″ in the following lengths: 12′, 14′, and 16′
2″ x 10″ in the following lengths: 12′, 14′, and 16′
2″ x 12″ in the following lengths: 12′, 14′, and 16′
4″ x 4″ x 16′
4″ x 6″ x 16′

All available sizes:
2″ x 3″ x 8′

Railroad ties are robust, rectangular wood beams traditionally used to support railway tracks, now repurposed in landscaping for creating rustic retaining walls, garden borders, and steps.

All available Products:
1″ x 2″ x 8′ Firing Strips
2″ x 9″ x 12′ Brick Layer Planks
Available Sizes:
1″ x 4″ in the following lengths: 10′ & 16′
1″ x 6″ x 16′
Address: 70 Comsewogue Rd SUITE 9 (end of the road)
Setauket-East Setauket, NY 11733
Phone: (631) 928-4665