Home Additions for Londonderry Homeowners
Londonderry has been a core market for Ryan & Greene since the beginning — we've completed work in nearly every subdivision off Mammoth Road, Pillsbury Road, and Litchfield Road. The town's housing is a great fit for our typical projects: 1980s–2000s colonials and capes where homeowners are ready to update the original kitchen, expand the primary bath, or add a deck.
Londonderry has a higher concentration of 1990s–2000s colonials than most surrounding towns — 2,400 to 3,500 square feet, original builder-grade kitchens and baths, ready for a meaningful update twenty years on. That context shapes how we approach a home addition in Londonderry — the layouts we recommend, the materials that hold up, and the timeline we can hit. Most of our Londonderry additions clients come to us by word of mouth from a neighbor we've already worked for.
Neighborhoods we work in: Mammoth Road, Pillsbury Road, Litchfield Road, Old Derry Road, Hardy Road.
What's Included in a Londonderry Home Additions Project
Londonderry Home Additions Pricing
Real ranges based on actual projects we've completed in and around Londonderry. Your written estimate is fixed before we start.
Bump-Out
100–250 sq ft addition, typically expanding a kitchen, bath, or family room.
Room Addition
400–800 sq ft addition: primary suite, family room, or in-law.
Second-Story / Major
Full second-story or 800+ sq ft single-story addition with multiple rooms.
Why Londonderry Homeowners Choose Ryan & Greene
Local crew, fast response
Our shop is in Plaistow — 20 minutes from Londonderry. 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 Londonderry 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.