Home Additions in Westchester County, NY

A home addition is one of the most complex residential construction challenges: it must expand your living space while respecting — and ideally enhancing — the existing architecture. At House Architecture & Construction, PLLC, we approach every addition with a deep understanding of the existing structure, the neighborhood context, and the homeowner’s long-term vision for the property.

Our addition projects in Westchester County encompass a wide range of typologies: kitchen expansions that push into the rear yard, two-story additions that add bedrooms above and living space below, master suite additions above garages, in-law suites that provide independent living with interior connectivity, and sunroom additions that blur the boundary between indoors and out.

Because we design and build under one roof, the structural and architectural decisions for your addition are made simultaneously — not sequentially. This means the connection between old and new is always resolved in the design phase, before construction begins. The result is an addition with proper structural support, seamless roofline integration, and finishes that match or complement the existing home.

We handle all aspects of the addition process: architectural design, engineering coordination, permit applications, and full construction management. We serve homeowners throughout Westchester County, including Scarsdale, Bronxville, Larchmont, Eastchester, and White Plains.