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Home Additions NYC Extensions, Second Floors & Room Add‑Ons

Transform your New York home with seamless, permit-compliant expansions that boost space and value.

Why Choose Dream Build Construction?

Dream Build Construction specializes in high-quality home additions in NYC. With over 20 years of experience, we manage everything from sunroom additions and second-story builds to bump-outs and in-law suites. Fully licensed, DOB-permitted, and detail-oriented your home expansion is in expert hands.

Our General Contracting Services

Second-Story Additions

Add a full upper level for extra bedrooms, offices, or bathrooms.

In-Law Suites & Guest Rooms

Comfortable, private spaces for family or visitors.

Single-Story Bump-Outs

Expand your kitchen or living area with more light and open space.

Garage-to-Living Conversions

Convert your garage into functional, livable space.

Sunrooms & Conservatories

Enjoy natural light year-round.

Our 5-Step Process

Free on-site consultation to discuss your goals.

Custom design and plans developed for your addition.

DOB permit management handled start to finish.

Professional construction with top-quality finishes.

Final clean-up and project delivery so your space is ready to enjoy.

What Sets Us Apart

Over 20 years of residential renovation experience in NYC
Fully licensed and insured, compliant with local codes
Complete handling of DOB permits and regulations
Clear timelines and proactive communication
Superior materials and craftsmanship
Transparent pricing with no hidden fees

Areas We Serve in NYC

Manhattan
Brooklyn
Queens
Staten Island
Long Island
New Jersey
Pennsylvania

Frequently Asked Questions

How much does a home addition cost in NYC?

Costs vary based on type, size, and finishes. We provide detailed estimates after our consultation.

How long does a home addition take to complete?

A bump-out typically takes 6–8 weeks. A second-story addition may require 4–6 months, depending on permits and complexity.

Do I need a permit for a home addition?

Yes. All structural additions in NYC require DOB permits. We include full permit management.

Can I remain in the house during construction?

Yes. We phase work to minimize disruption and keep your home functional.

Ready to expand your space and increase your home’s value in NYC?

📞 Call us at (929) 842‑1717

Related Services

General Contractor NYC

Commercial Construction

Kitchen Remodeling Manhattan

Bathroom Renovation NYC

Dream Build Construction is your trusted remodeling and construction company in New York. With over 20 years of experience, we deliver quality home and commercial renovations across Manhattan, Brooklyn, Queens, Long Island, and New Jersey. Built on trust, driven by results.