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

    Home Additions in Dover, NH

    Primary suite, family room, in-law, and second-story additions designed to match the existing home. Serving Dover from our Plaistow, NH shop, about 45 minutes away.

    Home Additions for Dover Homeowners

    Dover is our northern seacoast market, and we make the run up Route 108 and the Spaulding regularly for kitchens, baths, and additions. It is one of the fastest-growing cities in New Hampshire, which means a lot of 1900s mill-worker housing and mid-century capes are being brought up to modern standards for owners who plan to stay for decades.

    Dover's housing runs from 1800s and early 1900s homes near the Cochecho mills to post-war capes on Garrison Hill and newer construction out toward Dover Point. Plaster walls, undersized panels, and closed-off kitchens are the three things we find most often on a first walkthrough. That context shapes how we approach a home addition in Dover, the layouts we recommend, the materials that hold up, and the timeline we can hit. Most of our Dover additions clients come to us by word of mouth from a neighbor we've already worked for.

    Neighborhoods we work in: Garrison Hill, Downtown mill district, Sawyer Mills, Back River Road, Dover Point.

    What's Included in a Dover 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

    Dover Home Additions Pricing

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

    Local crew, fast response

    Our shop is in Plaistow, 45 minutes from Dover. 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 Dover Inspection Services 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 Dover, Common Questions

    Ready to plan your Dover home addition?

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