Home Additions · Brooklyn, NYC · Licensed & Insured
Home Addition Contractor NYC — Expert Home Additions in Brooklyn
Build up, build out, or convert — Dream Build Construction designs and constructs home additions across Brooklyn and NYC. From permits to final inspection, we handle everything.
Your Home Addition Contractor in NYC
As a licensed home addition contractor in NYC, Dream Build Construction specializes in expanding Brooklyn homes with precision structural work and complete interior finishing. Whether you need an extra bedroom, a full second story, or a converted garage, we manage every phase — from architectural drawings and NYC DOB permits to framing, mechanical work, and final finishes.
Brooklyn homeowners in Park Slope, Bay Ridge, Flatbush, Crown Heights, and Williamsburg trust us for home additions because we self-perform structural work, handle all permits in-house, and communicate clearly throughout the project. No surprises on cost. No delays from subcontractor gaps.
With 20+ years building home additions in Brooklyn and across NYC, we understand the unique structural and zoning requirements of New York City properties — attached rowhouses, detached Victorians, two-family homes, and commercial mixed-use buildings.
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What Our Home Addition Service Includes
Plans & Permits
Architectural drawings and full NYC DOB permit filing handled by our team.
Room Additions
Bedroom, living room, family room, and sunroom extensions built to code.
Second Story Additions
Full second-floor builds including structural reinforcement and staircase installation.
Garage Conversions
Convert attached or detached garages into livable, code-compliant living space.
Basement Finishing
Waterproofing, framing, electrical, and full finishing for basement living areas.
Electrical, Plumbing & HVAC
Licensed in-house mechanical work — no coordination gaps between trades.
Insulation & Framing
Structural framing, energy-efficient insulation, and vapor barrier installation.
Windows & Exterior
Energy-efficient windows, doors, siding, and exterior finishing matched to your home.
Full Interior Finishing
Drywall, flooring, painting, trim, and all interior finishes to move-in ready condition.
How Our Home Addition Process Works
Free Consultation & Site Visit
We visit your property, review your goals and budget, and assess structural feasibility. Zero obligation.
Design, Plans & Permits
Our team prepares architectural drawings and handles all NYC DOB permit applications — typically 4–8 weeks for approval.
Construction & Build
Licensed crew executes the addition with weekly updates, milestone check-ins, and rigorous quality control at every phase.
Final Inspection & Delivery
We pass all NYC DOB inspections, complete the punch list, and walk you through your finished addition.
Why Brooklyn Homeowners Choose Us for Home Additions
Licensed NYC Contractor
Fully licensed and insured in New York State. We carry general liability and workers' comp on every job.
All Permits Handled
We prepare architectural plans and file all NYC DOB permits in-house. You never chase paperwork.
20+ Years Experience
Two decades building home additions in Brooklyn. We've seen every structural scenario NYC properties present.
Transparent Fixed Pricing
Detailed written estimates before we start. No change orders for work we should have anticipated.
Recent Home Addition Projects in Brooklyn NYC
Home Addition Contractor Serving All of NYC
Frequently Asked Questions About Home Additions in NYC
A home addition in NYC is a permanent expansion of your existing home — adding square footage by building out horizontally, up with a second story, or converting existing spaces like garages or basements. Dream Build Construction handles all types of home additions in Brooklyn and across NYC, including permits, structural work, and full interior finishing.
Home addition costs in Brooklyn range from $200–$500 per square foot depending on type and scope. A single-room addition may start around $60,000–$120,000; a full second-story can range $200,000–$400,000+. Dream Build Construction provides free, detailed written estimates — call 929-842-1717 to schedule a walkthrough.
A home addition in NYC typically takes 4–9 months from signed contract to final inspection. This includes 4–8 weeks for NYC DOB permit approval plus 3–6 months of construction depending on scope. Dream Build Construction provides a detailed project schedule upfront and weekly progress updates throughout the build.
Yes — all structural home additions in NYC require permits from the NYC Department of Buildings (DOB). Dream Build Construction handles all permit filings, architectural drawings, and DOB inspections as part of our service at no extra fee. We ensure full compliance with NYC building codes on every project.
With 20+ years of experience and 200+ additions built across Brooklyn and NYC, Dream Build Construction brings local expertise that national contractors can't match. We are fully licensed and insured, handle all permits in-house, self-perform structural work, and have a documented track record in Park Slope, Bay Ridge, Flatbush, Crown Heights, and Williamsburg. Call 929-842-1717 for a free estimate.
Ready for Your Home Addition Project?
Get a free written estimate from Brooklyn's trusted home addition contractor. We respond within 24 hours.
Start Your Home Addition Project Today
Tell us about your project — scope, location, timeline. We'll schedule a free walkthrough and deliver a detailed written estimate within 48 hours. No pressure, no obligation.