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

    Home Additions in Derry, NH

    Primary suite, family room, in-law, and second-story additions designed to match the existing home. Serving Derry from our Plaistow, NH shop — about 15 minutes away.

    Home Additions for Derry Homeowners

    Derry sits a few minutes from our Plaistow shop, and it's a town where we have deep history. The housing here is more varied than Londonderry — older capes near the town center, ranches off East Derry Road, and newer construction east toward Hampstead. We've worked all of it.

    Derry's housing runs from 1950s ranches and capes through 1990s colonials, often on smaller lots than neighboring towns. A lot of our Derry work is kitchen-only or bath-only remodels in the $40–80k range rather than full-home renovations. That context shapes how we approach a home addition in Derry — the layouts we recommend, the materials that hold up, and the timeline we can hit. Most of our Derry additions clients come to us by word of mouth from a neighbor we've already worked for.

    Neighborhoods we work in: East Derry, West Derry, Hood Pond area, Beaver Lake, Downtown Derry.

    What's Included in a Derry 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

    Derry Home Additions Pricing

    Real ranges based on actual projects we've completed in and around Derry. 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 Derry Homeowners Choose Ryan & Greene

    Local crew, fast response

    Our shop is in Plaistow — 15 minutes from Derry. 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 Derry 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 Derry — Common Questions

    Ready to plan your Derry home addition?

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