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Seamless home addition design and construction — expanding your footprint with new square footage that integrates perfectly with your existing architecture and interior design.
Architectural Design & Engineering
Foundation Work & Structural Framing
Exterior Siding, Roofing & Windows
Interior Finish: Flooring, Trim & Paint
Mechanical Integration: Plumbing, Electric, HVAC
Custom Cabinetry & Built-Ins
Seamless Interior Transition to Existing Space
Full Permit Filing & Inspection Management
*All projects receive detailed fixed-price proposals after consultation and measurement.
Feasibility: Zoning Review & Setback Analysis
Architectural Design & Engineering Drawings
Fixed-Price Proposal & Permit Submission
Foundation & Structural Framing
Exterior Envelope: Roofing, Siding & Windows
Interior Finish & Seamless Integration
Home additions in Westchester typically range from $300 to $550 per square foot, fully finished. A 400 sq ft addition to create a master suite or enlarged kitchen/family room typically costs $120,000–$220,000.
Home additions typically take 6–10 months from permit approval to final inspection. Design and permitting can add 2–3 months before construction begins.
Yes. We assess zoning requirements, setbacks, and lot coverage for your specific property before design begins. Where variances are needed, we prepare the necessary applications.
Yes. Matching existing architecture is a primary goal of our addition design process. We source matching siding, roofing, trim profiles, and windows to ensure the addition reads as original construction.
Contact us for a complimentary consultation at your home or at our Chappaqua showroom.