Experienced Addition Builder in South Portland, ME | Legacy

Serving South Portland, Maine with 30+ years of addition building experience. Home additions for urban homeowners in established neighborhoods who want to expand without the disruption and cost of relocating.

The Addition Builder South Portland Homeowners Call for Urban Additions Done Without the Drama

South Portland additions come with tight lots, active permit review, and neighbors close by. After 30-plus years in Southern Maine, we know how to execute additions in urban settings without turning the homeowner's daily life upside down.

What We Bring to Every Addition Build

  • We show up when we say we will, every single time
  • We build exactly what we planned and agreed on
  • We never leave a project unfinished or incomplete

Client Testimonials

Hear From Homeowners In Your Area

Five black stars.

Watching our home transform through this addition was incredible. Legacy Construction communicated clearly, respected our space and vision, and delivered work that feels solid and intentional. You can tell they care about doing things the right way—and building work that lasts.

Joe M.
A newly poured concrete pad in a gravel area, with trees in the background under a blue sky.
Five black stars arranged horizontally.

We spoke with several contractors before choosing Legacy Construction and are glad we did. Their communication was excellent, and they handled every detail of our project with care. They take pride in their work, and it shows in the final product.

It’s hard to find a trustworthy contractor these days, let alone one that cares about the all the details that can easily get lost in the grand scheme of the project. Legacy Construction threaded that needle, and many others, expertly. Looking forward to the next time we can work together.

UBCTS in Perkasie
Bright modern apartment interior with white walls, large windows, a black sofa, and a beige couch
Five black stars in a row.

We appreciated how collaborative Legacy Construction was throughout our project. They listened to our ideas, offered practical solutions, and kept everything on track. The finished work is beautiful and built to last.

Mark J.
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Legacy Construction Service Area

OUR SERVICES

Addition Building in South Portland

Your Home Has Run Out of Room You know what the home is missing.

Addition builder South Portland ME Legacy Construction
You have a home in the Willard Beach neighborhood that you have invested in and have no plans to leave. The layout does not work for how your household runs today. The addition keeps getting pushed and another year passes without a build date or a contractor who followed through.

You called a contractor who walked through and said he would send a scope. He never did. Another quoted a price with no detail and no written plan about how the new space would actually connect to the existing structure.

Every month without more space costs your household:
  • We show up when we say we will, every single time

  • We build exactly what we planned and agreed on


  • Your property value stays lower than it should without the added square footage
  • The addition you put off this year will cost more to build next year


  • Every season you wait is a season your family goes without the space it needs

Stop putting the addition off. Call (207) 544-4607 for a free estimate today.

Your South Portland Addition Moves Forward

You have waited long enough. We take your South Portland addition from a written plan to a finished space with fixed scope, a real timeline, and personal oversight at every phase of the build.

  • Home Additions in Knightville and Willard Beach, South Portland, ME

    South Portland's Willard Beach and Knightville neighborhoods are dense, with tight lots where additions have to respect close setbacks and neighbor proximity, usually rear or single-story additions that add space without overwhelming the parcel. Adding onto an urban South Portland home is a precise, logistics-heavy job. Legacy Construction builds additions across South Portland, measuring the buildable area precisely, designing a rear or single-story addition that fits the urban footprint, and managing the staging that dense neighborhoods demand. We tie the addition cleanly into the existing home. Homeowners near Willard Beach and Knightville rely on Legacy for additions that add real space to an urban home while respecting the tight lot and the neighbors.

  • Rear and Single-Story Additions in South Portland, ME

    South Portland's dense neighborhoods, around Knightville and Willard Beach, most often suit rear and single-story additions that add space within the tight setbacks and close neighbors of an urban lot. These additions are precise, logistics-heavy work. Legacy Construction builds rear and single-story additions across South Portland, measuring the buildable area, designing within the setbacks, and managing the staging that dense neighborhoods demand. We tie the new space cleanly into the home. Homeowners throughout South Portland rely on Legacy for additions that add real space to an urban home while respecting the tight lot and the neighbors around it.

  • Seamless Addition Design-Build in South Portland, ME

    Across South Portland, from Knightville to Willard Beach, a well-built addition on a tight urban lot should match the home so cleanly that the new space looks original, while fitting the setbacks and respecting close neighbors. A seamless addition integrates the architecture and the connection point. Legacy Construction provides seamless addition design and construction across South Portland, designing within the setbacks, matching the home, managing the staging dense neighborhoods demand, and detailing the connection so it is both sound and invisible. Because we design and build, the addition is grounded in real costs. Homeowners throughout South Portland rely on Legacy for additions that grow an urban home and look like they were always part of it.

Ready to add the space your home needs? Call (207) 544-4607 or request a free estimate.

South Portland urban homeowner with no room to expand
Before and after addition urban home South Portland ME

Count on Legacy Construction for Addition Building in South Portland, ME

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Customer Satisfaction

Every addition carries a 5-year workmanship warranty, five times the Maine standard. We build additions that become permanent parts of homes that last for generations.

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Proven Track Record

250-plus completed projects across Southern Maine. Additions are among the most complex builds we do and our track record shows we execute them without the disruption homeowners fear.

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Full-Scope Addition Building

We handle design, permits, foundation work, framing, and finish for your South Portland addition. One crew, one scope, one contact from first conversation to final walkthrough.

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Insured and Accountable

We carry full insurance on every project and put our 5-year workmanship warranty in writing so you know what stands behind the new space we add to your home.

Your Easy 3-Step Process to Your General Contractor in South Portland, ME

1

Get Your Free Estimate

 Call or fill out the form. We will walk your South Portland home and give you a clear written estimate with no pressure and no surprises.

2

We Plan and Build It Right

Call (207) 544-4607 to start. We handle design, permits, and every phase of the addition with weekly updates so you always know where things stand.

3

Enjoy Your New Space

We do a final walkthrough, hand over your warranty paperwork, and confirm every detail meets your standard before we consider the job done.

Finished rear addition South Portland ME Legacy Construction

Frequently Asked Questions

  • Can you add onto my tight South Portland lot?

    Yes, with careful design. On tight South Portland lots near Knightville and Willard Beach, additions must respect close setbacks. We measure your buildable area precisely and design a rear or single-story addition that fits the urban footprint.

  • How close to the line can a South Portland addition go?

    On tight South Portland lots near Willard Beach, setbacks and neighbor proximity are the main limits. We measure your exact buildable area, confirm setbacks with the city, and design a rear or compact addition that adds real space.

  • How do you manage a South Portland addition site?

    We plan it carefully. On tight South Portland lots near Knightville, we coordinate deliveries, dumpster placement, and crew logistics to minimize disruption to close neighbors. We seal the work zone and sequence the build smoothly.

  • Can you add a rear addition in South Portland?

    Yes. On tight South Portland lots near Knightville, a rear or single-story addition often fits best. We measure your buildable area, confirm setbacks, and design an addition that adds real space within the urban footprint.

  • What does a South Portland addition cost?

    Cost depends on size, finishes, and how the addition fits your tight South Portland lot near Knightville. Urban sites can add logistics cost. We provide a detailed written estimate after walking the property so you know the full picture.

  • Can you redesign my layout with a South Portland addition?

    Yes. Beyond adding space, we can rework the existing layout of your South Portland home near Knightville so the new and old areas flow together. We open walls and reconfigure rooms to make the urban home live larger.