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NEW BUILDS & EXTENSIONS

Home Extensions & Structural Additions

Expand your living space and maximize property value with custom rear extensions, second-story vertical additions, and full structural builds.

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SQUARE FOOTAGE EXPANSION

Expand Your Living Space Without Leaving the Neighborhood You Love

Moving in New York City is expensive and stressful. Home extensions allow you to gain vital square footage—adding bedrooms, expanding kitchens, or creating multi-generational living suites.

Stenco Construction delivers complete turnkey home extension services. We coordinate architectural blueprints, structural engineering calculations, DOB zoning analysis (FAR, setbacks, lot coverage), foundation excavation, steel framing, and full interior/exterior integration.

From modern glass-walled rear extensions to full second-story additions, we build structures designed to endure generations.
Rear Ground-Floor Home Extensions
Second-Story Vertical Additions
DOB Architectural Drawings & Permits
Foundation Underpinning & Concrete Excavation
Structural Steel & Wood Framing
Seamless Architectural Facade Integration
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Home Extensions & Structural Additions
Home Extensions & Structural Additions
Licensed & Insured NYC Contractor
CORE CAPABILITIES

Specialized Home Extensions & Structural Additions Services

Engineered solutions, space optimization, and master craftsmanship delivered by licensed NYC tradesmen.

Rear Ground-Floor Extensions

Expand your kitchen, family room, or master suite outward into your rear yard with open-concept floor plans and expansive patio sliders.

Second-Story Vertical Additions

Double your home's square footage by adding an entire full second floor above your existing ranch or cape cod home with engineered structural support.

DOB Architectural & Zoning Plans

Complete zoning compliance checks, Floor Area Ratio (FAR) calculations, structural engineer stamps, and Department of Buildings permit expediting.

Foundation Excavation & Underpinning

Reinforced concrete footings, foundation wall pours, and structural underpinning adjacent to neighboring property lines with seismic monitoring.

Structural Framing & Enclosure

Heavy-gauge steel columns, LVL beam installations, precision wood framing, exterior sheathing, weatherproofing membranes, and energy-efficient windows.

Turnkey Interior Finishing

Seamless mechanical integration: HVAC ducting, plumbing lines, electrical sub-panels, drywall, trim work, hardwood flooring, and paint.

WHY CHOOSE STENCO

All Kinds of Repairs & Renovations — Interior & Exterior

Not every project is a full overhaul. Sometimes it is a leaking roof corner, damaged masonry, cracked sidewalk section, or a single room update. We treat small repair jobs with the exact same engineering care and planning as major new builds.

Multi-Trade Expertise

Masonry, roofing, concrete, framing, and interior finishes constantly overlap on NYC buildings. With multi-trade expertise under one licensed contractor, overlapping trades are coordinated seamlessly rather than passed between disconnected companies.

Planned & Structured Execution

Every project is broken into clear phases with a defined scope before tools touch your property. That structure keeps trades in the right order, prevents costly delays, and ensures you always know what milestone is happening next.

Ongoing Service & Support

Our commitment does not end when final paint dries. Our leadership stays directly reachable after completion, so whenever you need advice, warranty service, or the next phase of work, you deal with experts who already know your property.

OUR WORKFLOW

Process: How We Work

A predictable, transparent 4-stage method that eliminates surprises and delivers durable results on time.

STEP 01
01

Inspection & Diagnosis

We inspect the actual source of the problem — not just cosmetic symptoms. Tracing structural stress, substrate moisture, or layout restrictions.

STEP 02
02

Itemized Written Scope

You receive a transparent, comprehensive estimate with specified material grades, realistic schedules, and permit requirements clearly detailed.

STEP 03
03

Structured Execution

Work proceeds in logical phases with dust barriers, daily site protection, clean sweeps, and constant communication from the project manager.

STEP 04
04

Walkthrough & Warranty

A rigorous punch-list walkthrough with the owner to verify every detail, followed by municipal sign-offs and our written workmanship warranty.

CORE STANDARDS

Engineered Standards Behind Every Project

The four core principles that ensure our work outlasts harsh NYC weather and daily building wear.

Diagnosis First

We locate the exact entry point or structural stress before proposing solutions. Stains and surface cracks are symptoms — fixing the symptom without resolving the cause guarantees recurring failure.

Repair When Repair Works

We never push for unnecessary full replacements when targeted, high-integrity repairs will restore the system safely. Honest assessments save our clients tens of thousands of dollars.

Systems, Not Just Coverings

Whether roofing, tile, stucco, or paving, we treat the work as a complete engineering assembly: substrate preparation, waterproofing barriers, structural reinforcement, and correct drainage.

NYC DOB Licensed & Insured

We carry comprehensive multi-million general liability and workers' compensation coverage specifically rated for NYC. All projects adhere strictly to NYC building code and safety standards.

PORTFOLIO

Recent Home Extensions & Structural Additions Projects

Real results delivered on time and within budget across New York City and Long Island.

Two-Story Rear Yard Structural Home Extension
Exterior
Two-Story Rear Yard Structural Home Extension

Engineered concrete underpinning, structural steel support beams, new second-floor master bedroom su...

SERVICE FAQS

Clear Answers to Your Home Extensions & Structural Additions Questions

Practical advice from experienced NYC licensed general contractors.

Our team checks your property's NYC zoning designation (e.g., R3, R4, R5) and calculates your current utilized floor area versus maximum allowed floor area to confirm permissible expansion square footage.

Permit approval and architectural review typically take 2-4 months. Active physical construction typically ranges from 3 to 5 months depending on whether it is a ground-floor extension or vertical second-story addition.

For rear ground-floor extensions, homeowners can often remain in the front portions of the home with dust partition walls. For full second-story additions, temporary relocation is recommended while the roof is removed.

Yes. We precisely match exterior brick, vinyl siding, stucco textures, roof pitch, and architectural trim so the finished addition looks cohesive and intentional.
SERVICE AREAS

Proudly Serving Across New York & Nassau County

Based in Queens, Stenco Construction serves residential homeowners, commercial building owners, and property managers throughout all five boroughs of New York City and Nassau County, Long Island. Wherever your property is located, our licensed team delivers identical, uncompromising craftsmanship.

Queens, NY

Our main headquarters is located in Bayside/Flushing, Queens. We provide comprehensive single-family, multi-family, and commercial construct...

Flushing Bayside Astoria Forest Hills Long Island City Whitestone Jamaica
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Brooklyn, NY

Brooklyn presents unique architectural challenges, from landmark preservation requirements in historic brownstone districts to modern loft c...

Bay Ridge Park Slope Williamsburg Bushwick Dyker Heights Flatbush Brooklyn Heights
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Manhattan, NY

Navigating Manhattan construction requires rigorous compliance with co-op boards, condo alteration agreements, building management logistics...

Upper East Side Upper West Side Harlem Midtown Chelsea Soho Tribeca
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The Bronx, NY

From single-family residences in Riverdale and Pelham Bay to multi-unit apartment complexes across the Grand Concourse, Stenco delivers dura...

Riverdale Pelham Bay Throggs Neck Morris Park Country Club Woodlawn Kingsbridge
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Staten Island, NY

Staten Island properties frequently feature larger lots that accommodate substantial rear home additions, second-story vertical expansions,...

St. George Todt Hill Great Kills Tottenville New Dorp Eltingville West New Brighton
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Nassau County, NY

Expanding our quality craftsmanship into western Long Island, Stenco Construction serves Nassau County homeowners with comprehensive exterio...

Great Neck Manhasset Port Washington Garden City Roslyn Mineola New Hyde Park
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GET IN TOUCH

Schedule Your Free Estimate & Consultation

Ready to remodel your kitchen, renovate your home, or repair your facade? Reach out to our licensed NYC general contracting team today.

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NYC LICENSED & INSURED

Stenco Construction Inc.

Family-owned general contracting firm with over a decade of verified experience in commercial and residential renovation across Queens, Brooklyn, Manhattan, Bronx, and Nassau County.

Direct Phone (24/7 Quotes) (718) 807-6414
NYC Office Location 38-08 Bell Blvd, Queens, NY 11361
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