Basement Finishing in Shirley NY

Basement Finishing in Shirley, NY

Benitez Remodeling is headquartered right here in Shirley — finishing basements for our own hometown plus Mastic, Mastic Beach, Moriches, and the surrounding South Shore communities. Family rooms, guest suites, gyms, and basement bathrooms, with waterproofing, egress windows, electrical, and finish carpentry all under one licensed roof.

Finished Basement Family Room in Shirley
Basement Home Theater Suffolk County
Custom Basement Finishing Long Island

Basement Finishing in Shirley

Shirley is home base for Benitez Remodeling — our shop sits right in town, so when a Shirley homeowner wants that unfinished basement turned into a family room, gym, guest suite, or full basement bathroom, the crew doing the work lives with the results. Framing, waterproofing, electrical, plumbing, drywall, flooring, and finish carpentry all stay in-house, which keeps the schedule tight and the budget honest.

We've finished basements up and down the William Floyd corridor — Shirley, Mastic, Mastic Beach, Moriches, and Brookhaven hamlet — and we know the local ranch and cape home stock inside out: the slab-adjacent moisture issues, where the water table runs high near the river, and exactly what it takes to make a below-grade bedroom legal in the Town of Brookhaven.

WaterproofingEgress WindowsHome TheaterGuest SuiteBasement BathWet Bar
📈 70% avg ROI
🛡️ Licensed & Insured
Starting at $25K
Call (631) 682-7834 — Free Estimate
Why choose us

Why Shirley Homeowners Choose Benitez

This is our hometown — Benitez Remodeling has been based in Shirley since 2015, and our neighbors' basements get the same crew that built our reputation.

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Licensed Suffolk County Contractor

Fully licensed and insured in Suffolk County. We pull all required permits, handle the Health Department egress sign-off, and walk the inspector through every milestone.

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Headquartered in Shirley

Our shop is on Carlton Drive, minutes from anywhere in town. Same-week site visits are the norm, and if a project needs a follow-up, we're around the corner — not an hour away.

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Transparent Pricing

Detailed written estimates before any work begins. No surprise change orders — just honest, upfront pricing from start to finish.

One Team, Every Trade

Waterproofing, framing, plumbing, electrical, HVAC tie-in, drywall, and flooring — all handled by our in-house crew. No sub-contractor shuffle.

Common Basement Projects in Shirley

Family Room Build-Out

The classic Shirley project: waterproof, frame, insulate, and finish a full-footprint rec room where the kids can be loud. Moisture-rated flooring and plenty of recessed light.

Home Gym + Office

Rubber-floored training space plus a quiet, insulated workspace — dedicated circuits, mini-split climate control, and sound isolation from the floor above.

Legal Guest Suite

Bedroom with code-compliant egress window, full bath, and kitchenette. We handle the Town of Brookhaven permitting so the space counts at resale.

Basement Bath + Laundry

Sewage ejector or up-flush plumbing, tiled shower, vanity, and a proper laundry area — the upgrades that make a basement genuinely livable.

Get a Free Estimate for Your Shirley Basement

Call us or submit a request below — we respond within 2 hours during business hours and can often schedule a same-week site visit.

Call (631) 682-7834Speak with a remodeler