Veteran-Owned·Licensed & Insured in NH·30+ Years

    Home Additions in Windham, NH

    Primary suite, family room, in-law, and second-story additions designed to match the existing home. Serving Windham from our Plaistow, NH shop — about 25 minutes away.

    Home Additions for Windham Homeowners

    Windham is a premium market — Cobbetts Pond, the executive subdivisions off Route 111, and the wooded lots near Searles School all support the kind of larger, custom projects we like to take on. Kitchens here regularly include butler's pantries, wine storage, and integrated appliances; additions are sized for serious primary suites or family rooms.

    Windham's homes are predominantly 1990s-and-newer colonials and contemporaries from 2,800 to 5,000+ square feet on heavily wooded lots. Many sit on private wells with high-end fixture loads, which factors into bath and kitchen scope. That context shapes how we approach a home addition in Windham — the layouts we recommend, the materials that hold up, and the timeline we can hit. Most of our Windham additions clients come to us by word of mouth from a neighbor we've already worked for.

    Neighborhoods we work in: Cobbetts Pond, Searles, Route 111 corridor, Range Road, Castle Hill.

    What's Included in a Windham Home Additions Project

    Architectural design and structural engineering
    Foundation: full basement, crawl space, or slab
    Framing tied into existing structure with matched roof pitch
    Siding, windows, and trim matched to the existing home
    Full electrical, plumbing, and HVAC integration
    Insulation to current NH or MA energy code
    Interior finish: flooring, trim, paint, fixtures
    Permit, engineering, and inspection coordination
    One-year workmanship warranty

    Windham Home Additions Pricing

    Real ranges based on actual projects we've completed in and around Windham. Your written estimate is fixed before we start.

    Bump-Out

    $60k–$120k

    100–250 sq ft addition, typically expanding a kitchen, bath, or family room.

    Room Addition

    $120k–$300k

    400–800 sq ft addition: primary suite, family room, or in-law.

    Second-Story / Major

    $300k–$700k+

    Full second-story or 800+ sq ft single-story addition with multiple rooms.

    Typical timeline: 4–9 months from contract depending on scope.

    Why Windham Homeowners Choose Ryan & Greene

    Local crew, fast response

    Our shop is in Plaistow — 25 minutes from Windham. Site visits get scheduled within a week, and we don't disappear after the contract is signed.

    Permits handled, code-compliant

    We pull permits at the Windham Building Department and coordinate every inspection. Veteran-owned, licensed in NH, fully insured, OSHA certified.

    Fixed-price contracts

    Your number doesn't move unless you change scope. No "we found something" surprise invoices halfway through.

    Home Additions in Windham — Common Questions

    Ready to plan your Windham home addition?

    Free in-home consultation, a 3D rendering before any demo, and a fixed-price contract before we touch the house.