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American Building Group

Maine

ADU Builders, ADU Designers

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Website

https://abgmaine.com/

American Building Group (ABG) is a trusted construction, remodeling, and ADU builder serving homeowners, businesses, and property managers throughout Southern Maine. Founded in 1988, the company has spent more than three decades building a reputation for integrity, craftsmanship, safety, and reliable project execution. Headquartered in Portland, Maine, ABG specializes in residential construction, remodeling, framing, siding, decks, windows, doors, and custom Accessory Dwelling Unit (ADU) construction through its Crafted Living ADU Solutions division.

Built on honest business practices and strong client relationships, ABG works closely with homeowners throughout every phase of construction. The company emphasizes transparent communication, detailed planning, safe worksites, and adherence to industry standards, ensuring every project is completed with quality workmanship and long-term durability. With over 35 years of experience in Maine’s construction industry, ABG continues to help clients enhance their properties through customized building solutions designed for New England living.

Residential Construction & Remodeling Services

American Building Group offers a comprehensive range of residential construction and remodeling services designed to improve functionality, curb appeal, and property value. Their experienced team manages projects of all sizes, from small upgrades to large-scale renovations and new construction.

Services Include:

Accessory Dwelling Unit (ADU) construction
Detached ADUs
Garage conversion ADUs
Tiny homes
Modular ADUs
Home additions
Home remodeling
Kitchen remodeling
Bathroom remodeling
Framing services
Wood siding installation
Vinyl siding installation
Window installation and replacement
Door installation and replacement
Deck construction
Deck upgrades and repairs
Custom trim work
Exterior renovations
Residential construction services
Commercial construction services

Every project is completed with a focus on craftsmanship, safety, and long-term performance in Maine’s demanding climate.

Crafted Living ADU Solutions

Through its dedicated ADU division, Crafted Living ADU Solutions, ABG has become a leading provider of accessory dwelling units throughout Southern Maine. The company designs and builds custom ADUs that provide homeowners with flexible living spaces for family members, guests, rental income opportunities, and aging-in-place solutions.

ADU Options Include:

Detached ADUs
Attached ADUs
Garage conversion ADUs
Above-garage ADUs
Basement ADUs
Interior conversion ADUs
Junior ADUs (JADUs)
Modular and prefabricated ADUs
Tiny homes on foundations
Guest cottages
In-law suites
Rental income properties

As Certified Aging-In-Place Specialists and ADU experts, ABG helps homeowners navigate zoning requirements, permitting, design, and construction while maximizing property value and functionality.

Why Homeowners Choose American Building Group

Established in 1988
More than 35 years of construction experience
Certified Aging-In-Place Specialists
Dedicated ADU design and construction division
Lead Safe Certified company
Fully insured contractor
Strong focus on safety and compliance
Transparent contracts and communication
Extensive experience with Maine construction standards
Personalized project planning and management

ABG’s commitment to quality workmanship and customer service has made them a trusted name among homeowners and property managers throughout Southern Maine.

Building Southern Maine With Integrity

American Building Group believes successful construction projects are built on trust, planning, communication, and craftsmanship. Whether constructing a custom ADU, remodeling a home, installing new siding, or building a deck, the company approaches every project with professionalism and attention to detail. Their team works closely with clients to create durable, attractive spaces that meet today’s needs while adding long-term value to the property.

Core Values

Integrity
Operating with honest business practices and transparent communication throughout every project.

Safety
Maintaining safe worksites and adhering to strict industry standards and protocols.

Quality Craftsmanship
Delivering durable, high-quality construction designed for Maine’s climate and building requirements.

Customer Service
Building lasting client relationships through responsive communication and personalized project management.

From ADUs and home additions to siding, decks, windows, and full-scale remodeling projects, American Building Group continues to help homeowners across Southern Maine build, improve, and protect their most valuable investment.

Business Hours

Monday: 7:00 AM - 5:00 PM
Tuesday: 7:00 AM - 5:00 PM
Wednesday: 7:00 AM - 5:00 PM
Thursday: 7:00 AM - 5:00 PM
Friday: 7:00 AM - 5:00 PM
Saturday: 9:00 AM - 4:00 PM
Sunday: CLOSED

Service Area

Portland ME
Falmouth ME
Westbrook ME
South Portland ME
Scarborough ME
Cape Elizabeth ME
Yarmouth ME
Cumberland ME
Gorham ME
Windham ME
Saco ME
Biddeford ME
Old Orchard Beach ME
Kennebunk ME
Kennebunkport ME
Wells ME
York ME
Cumberland County ME
York County ME

Facebook

https://www.facebook.com/abgmaine/

Instagram

https://www.instagram.com/abg_maine/

276 Canco Rd., Portland, ME, United States, 04103

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