Convert unused basement space into playrooms, home theaters, guest suites, and more. Waterproofing, egress windows, entertainment centers, and full bathrooms.
Convert unused basement space into functional living areas, playrooms, home theaters, or guest suites. We handle waterproofing, framing, electrical, plumbing, egress windows, and can add full bathrooms and entertainment centers so your basement becomes livable, dry, and valuable.
As basement finishing contractors serving Suffolk County, we know the water table and older foundations common in towns from Bay Shore and Ronkonkoma to Patchogue and Sayville. Every Suffolk County basement project is built to local code — permits, egress, and moisture control included — so your finished space stays dry and inspection-ready.
From rec rooms to guest suites, we turn your basement into usable living space.
Open rec rooms, playrooms, or flex space with drywall, flooring, and lighting.
Dedicated media rooms with wiring, acoustics, and seating layout.
Bedroom and full bathroom additions for guests or in-law living.
Full or half baths and wet bars with plumbing and finishes.
Interior or exterior waterproofing so your finished basement stays dry.
Egress windows and code-compliant exits for bedrooms and livable space.
Yes — full basement finishing is one of our core services. We handle framing, insulation, egress windows, full bathrooms, separate-entrance apartments, home theaters, and gym buildouts across Nassau and Suffolk. We also pull all required permits (basement work without a Town permit creates real resale problems later). See our basement finishing portfolio at /basement-finishing.
Long Island basement finishing typically runs $25,000–$80,000+ depending on square footage, scope, and finishes. A simple open-plan family room with drywall, flooring, and electrical usually lands $25K–$45K. Adding a full bathroom adds $12K–$20K. Egress windows for a legal bedroom run $4K–$8K each (Suffolk County code requires them). Higher-end builds with separate-entrance in-law apartments, home theaters, or wet bars can reach $80K+. Every Benitez Remodeling estimate is free and includes line-item pricing — we walk the basement, measure, and tell you exactly what each piece costs before you sign anything. Permits are always included in the quote.
Local pricing, permits and recent projects for the towns we work in most.
Get a detailed quote with transparent pricing. We respond within 2 hours.
Call (631) 682-7834