Home Additions in Somerville MA

Home Additions &
Second-Story Additions in Somerville

Expanding Somerville homes with seamless additions — built by one in-house team from foundation to finish.

Your Somerville Home Has Good Bones — Let's Build on Them

Somerville is one of the most densely built communities in Massachusetts. Lots are tight. Setback requirements limit what you can do with the footprint. But the homes here — many of them multi-family Victorians and classic New England two-families — have solid structure and real character worth preserving.

When you need more space in Somerville, the answer is usually building up or rebuilding what's already there. That's exactly what we do. We've removed aging enclosed porches and replaced them with full two-story additions — expanding living rooms, creating new offices, and adding usable square footage without touching the lot line. The key is matching the existing architecture so the addition looks original to the home — not bolted on.

North Heritage Construction is a licensed and insured general contractor based in Massachusetts, serving Somerville and surrounding communities since 2004. Every project is managed and built by our own in-house crew — no subcontractors running your job site.

2004

Est. in Massachusetts

5.0

Google Rating

5-Star Reviews

Licensed & Insured

What We Build in Somerville

Additions and renovations designed for Somerville's dense lots and historic housing stock.

Second-Story Additions

When you can't expand out, you go up. We build second-story additions over existing first-floor structures — adding bedrooms, offices, or full living space without changing your footprint. New framing, roofing, and exterior finishes are matched to the original home.

Porch-to-Addition Conversions

Many Somerville homes have enclosed porches that waste valuable square footage. We remove these aging structures and rebuild them as fully insulated, code-compliant additions — expanding living rooms, creating home offices, or adding new entry areas.

Full Home Renovations

Complete interior and exterior renovations that modernize your Somerville home while preserving its character. Andersen 400 series windows, Boral siding, PVC trim, layout reconfiguration, updated systems — managed from start to finish by one team.

Dormers

Shed dormers and gable dormers that convert underutilized attic space into functional rooms. A cost-effective way to add bedrooms, bathrooms, or a home office in Somerville's tight-lot housing.

Featured Project

Two-Story Addition — Somerville, Massachusetts

Removed an existing enclosed first-floor porch, rebuilt the structure, and added a full second story — expanding the living room and creating a new home office. Finished with Andersen 400 series windows, Andersen patio front door, PVC trim, and Boral siding. Complete project management by our in-house team.

Somerville MA home before addition - aging enclosed porch exterior

Before — Enclosed Porch

Completed two-story home addition in Somerville MA by North Heritage Construction

After — Two-Story Addition

Somerville home before renovation - interior enclosed porch windows

Before — Interior

Floor joist framing for Somerville MA home addition

Floor Framing

Wall Framing

Andersen 400 series windows installed in Somerville home addition

Andersen 400 Windows

Boral Siding

Front View

Somerville MA two-story addition exterior corner view

Side View

Andersen patio front door on Somerville MA home addition

Front Entry — Andersen Patio Door

View Full Portfolio

One Team, Every Phase — Start to Finish

Somerville's permitting process is particular, and working on dense, close-setback lots adds complexity that most contractors underestimate. We've worked in Somerville before. We know how to navigate the inspections, how to manage site logistics on tight lots, and how to deliver a finished product that meets code and looks right.

Everything is handled by our own crew. No subcontractors managing your project. One team, one point of contact, clear accountability from demo day through final walkthrough.

Architectural design and permit drawings

All Somerville permits pulled and inspections managed

Demolition and structural removal

New foundation work and structural framing

Roofing tied into existing structure

Andersen 400 series windows and patio doors

Boral siding and PVC trim — matched to existing home

Clean site and final walkthrough

Why Somerville Homeowners Choose North Heritage

Experience on Dense Lots

Somerville lots are tight. We know how to manage material staging, equipment access, and neighbor coordination on properties with minimal setbacks and shared driveways.

Local Permitting Knowledge

We handle all permits and inspections with the City of Somerville. We know the requirements, the process, and the timeline — so your project doesn't stall waiting on paperwork.

In-House Team — No Subcontractors

Your project is built by our own crew. One team from start to finish means consistent quality, clear communication, and no finger-pointing between trades.

Premium Materials, Seamless Finish

We use Andersen 400 series windows, Boral siding, and PVC trim — materials that perform in New England weather and age well. Every detail is matched to the existing home so the addition looks original.

Serving Somerville & Surrounding Communities

We build home additions and renovations across Greater Boston. If you don't see your town listed, call us — we likely work there.

Somerville Cambridge Medford Arlington Newton Lexington Belmont Watertown Wellesley Brookline Waltham Winchester

Planning a Home Addition in Somerville?

Contact us for a free estimate. We will walk you through your options, timeline, and cost — so you can make the right decision for your home.

Get a Free Estimate Call 508-353-2368

5.0 — 27 Google Reviews

Home Additions &
Second-Story Additions in Somerville

Your Somerville Home Has Good Bones — Let's Build on Them