Processing...
AWARD WINNING: ANGIE’S LIST SUPER SERVICE AWARD (14 YEARS CONSECUTIVE)
AWARD WINNING: ANGIE’S LIST SUPER SERVICE AWARD (14 YEARS CONSECUTIVE)
Long Island families don’t always need a new house — they need more space in the one they already have. A dormer turns an attic into two bedrooms. A rear extension gives you the open kitchen you’ve wanted for years. A full ground-up build puts a custom home exactly where you want it to be.
OZ General Contracting has been doing this work in Nassau and Suffolk County since 1976. We handle every part of the project: architectural drawings, all permits through the Nassau or Suffolk County building department, framing, roofing, insulation, windows, and full interior finish. You deal with one contractor from first conversation to final walkthrough.
A dormer is the most cost-effective way to add livable square footage on Long Island. Where a rear addition requires foundation work and horizontal expansion, a dormer works with your existing footprint it goes up, not out.
Shed Dormer The most popular type on Long Island Capes and Colonials. A shed dormer extends across most or all of the roofline, converting an attic into a full-height floor with multiple rooms. You can typically fit two bedrooms and a full bathroom in the space a shed dormer creates.
Gable Dormer Smaller than a shed dormer, a gable dormer adds a single room or window alcove to a sloped roof. Common on ranch homes and as accent additions to Colonials when the goal is more light, not a full room.
Hip Dormer A three-sided dormer with a hipped roof, well-suited to homes where the architectural style requires a specific look. Less common but we build these when the design calls for it.
When you need more space on the ground floor, a rear or side extension is the answer. We’ve built kitchen expansions, master bedroom additions, mudroom additions, and full-wing additions for Long Island homeowners who wanted more without the cost and disruption of buying and moving.
Extension projects require foundation work, framing, roofing, and full tie-in to your existing structure. We handle the engineering, the permits, and the construction. Our project manager is on-site every day not just when something goes wrong.
We build custom homes from the ground up in Nassau and Suffolk County. If you own a lot or are tearing down an existing structure, OZ can take you from architectural design through final inspection.
Our new construction projects are managed with the same attention to detail as our renovation work one licensed crew, one project manager, one company responsible for the outcome. We’ve built waterfront homes, colonial-style family homes, and custom coastal properties across Long Island.
New construction, dormers, and extensions all require permits in Nassau County and most Suffolk County jurisdictions. We prepare all applications, coordinate with the building department, schedule required inspections, and manage the entire permit process. Permit fees are discussed at your estimate.
You do not need to take time off work to deal with the building department. That’s our job.
Yes. Any structural change to your roofline requires a building permit in Nassau County. We handle the complete permit application, engineering documentation, and all required inspections. You don’t have to deal with the building department — we do.
A gable dormer typically starts around $40,000 to $60,000 in Nassau County. A full shed dormer — converting a Cape’s full attic into a second floor with two rooms and a bathroom — generally runs $80,000 to $150,000+, depending on finish level and the size of the structure. We provide free, detailed written estimates after measuring your home.
A gable dormer usually takes 6 to 10 weeks. A full shed dormer with interior finish takes 3 to 5 months. We give you a specific schedule at your consultation and stick to it.
Yes. We are licensed in both Nassau and Suffolk County and have completed dormer and extension projects across Long Island, including Bellmore, Merrick, Wantagh, Seaford, Massapequa, Levittown, and neighboring communities.