Home Additions

Add the room you’re missing, without moving.

Whether it’s a second story, a bigger kitchen, or a first-floor primary suite, we design and build additions that read as part of the original house matched rooflines, siding, and trim, not a visible seam.

Addition types

Five ways to grow the house you already own.

type 01

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Second-Story Addition

Build up instead of out adds bedrooms or living space without shrinking your yard or footprint.

type 02

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Bump-Out Addition

A smaller, targeted expansion a bigger kitchen, a bay window, or an extra few feet where you need it most.

type 03

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In-Law / Family Suite

A private bedroom-and-bath suite connected to the main house, for multigenerational living without a full ADU.

type 04

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Sunroom / Great Room

A light-filled addition built for how you actually live not a seasonal three-season porch that goes unused all winter.

type 05

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Garage Addition

New attached or expanded garage space, with room above for storage, a home office, or future finished square footage.

Not sure what fits your lot?

We’ll walk the property with you and talk through what’s realistic for the space and budget.

BEFORE WE SWING A HAMMER

A good addition starts with a good site plan.

PLAN WITH PURPOSE

We create a site plan so you can see exactly how the addition fits on your lot and confirm it clears the required setbacks.

DESIGN FOR LIGHT & COMFORT

We check sun angles to make sure your addition doesn’t block natural light from your windows or your neighbor’s.

BUILT TO BLEND

Matching your existing roofline, siding profile, and trim ensures your addition looks like it was always part of the house.

PAPER FIRST, BUILT RIGHT

Working it out on paper first means no surprises once framing starts.

How we build an addition

Six steps, one crew.

01

Site Visit & Measure

We walk the property, measure the lot, and talk through what you need.

02

Design & Site Plan

Setbacks, sun angles, and rooflines worked out before anything is priced.

03

Permitting

Building, electrical, and plumbing permits filed and tracked.

04

Foundation & Framing

Foundation work and structural framing tied properly into the existing house.

05

Mechanicals

Electrical, plumbing, and HVAC extended or added, up to code.

06

Finish & Walkthrough

Siding, trim, and interior finishes matched to the existing house.

Common questions

ADU FAQs

Do I need a permit for a home addition?

Yes any addition that changes your home’s footprint or structure requires a building permit in Massachusetts, along with electrical and plumbing permits where applicable. We handle the filing and inspections as part of the job

Will an addition increase my property taxes?

Almost certainly, since it adds finished square footage to your home’s assessed value. Your local assessor’s office can give you a more specific estimate based on your town’s rates.

How long does a typical addition take?

A bump-out addition often runs 2–4 months from permit to finish; a second-story addition or larger family suite typically runs 4–7 months, depending on scope, permitting timelines, and the season.

Can you match the existing siding and roofline?

Matching the existing exterior is part of our design process from the start — roof pitch, siding profile, and trim details are chosen to read as one continuous house, not two.

Also serving MetroWest homeowners with

Let’s draw up your site plan.

Free estimate we’ll walk the property and tell you what fits.