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Your Trusted Building Materials Supplier in Mattapoisett, MA
Mahoney's Building Supply Ctr has been a trusted provider of high-quality building materials and expert services since 1884. Our commitment to excellence spans over a century, serving professional contractors and discerning homeowners across Southern Massachusetts and Cape Cod. We pride ourselves on offering thousands of premium products, including Andersen windows, Festool tools, and composite decking, backed by knowledgeable staff and personalized support. Our services extend beyond product sales to include precise material estimating, custom design consultations, and next-day delivery to streamline your projects. With a legacy rooted in Mattapoisett, Massachusetts, we continue to evolve while maintaining the integrity and reliability that have defined our business for generations.

Our team of specialists ensures every customer receives tailored advice, whether selecting paint finishes or engineering structural components. As an Andersen Circle of Excellence dealer, we uphold the highest standards in product quality and customer service. From hard-to-find millwork to comprehensive lawn care supplies, we are your one-stop destination for all building needs. Our dedication to community and craftsmanship remains unwavering, ensuring we meet the demands of modern construction while honoring our historic roots. Today, Mahoney's Building Supply Ctr stands as a leader in the industry, ready to support your next project with expertise honed over 140 years.
Services
Building Materials Supply Hardware Products Lumber & Plywood Windows & Doors Decks & Railings Paint & Sundries Lawn & Garden Supplies Housewares & Gifts Material Estimating Next-Day Delivery
Highlights and features
  • We offer over 140 years of expertise in building materials and contractor services.
  • Our inventory includes 8,000+ products from trusted brands like Andersen and Festool.
  • We provide expert material estimating and custom design consultations.
  • Our next-day delivery service ensures timely project completion.
  • We are an Andersen Circle of Excellence dealer for premium window solutions.
Services
Building Materials Supply
We supply thousands of high-quality building materials, including lumber, millwork, and engineered products. Our inventory caters to contractors and homeowners seeking durable, reliable solutions. Partnerships with top manufacturers ensure access to premium-grade materials for any project.
Windows & Doors
As an Andersen Circle of Excellence dealer, we offer premium windows and doors with installation support. Our selection includes energy-efficient options and custom designs to enhance residential and commercial properties. Expert advice ensures proper product selection and performance.
Decks & Railings
We provide composite decking, PVC, and premium treated lumber for outdoor spaces. Our offerings include stainless steel cable railings and exotic hardwoods like ipe. Expert guidance helps customers design and build durable, aesthetically pleasing decks.
Material Estimating
Our team converts blueprints into detailed material lists for accurate project budgeting. Services include engineered floor joist layouts and structural support recommendations. Contractors benefit from precise, organized estimates to streamline construction processes.
Next-Day Delivery
We offer reliable next-day delivery of building materials to job sites across our service area. Coordination ensures timely arrivals, minimizing project delays. This service supports contractors requiring efficient material procurement and scheduling flexibility.
Questions
What types of building materials do you carry?
We stock over 8,000 products, including lumber, Andersen windows, composite decking, paint, hardware, and specialty items like Festool tools.
Do you serve both contractors and homeowners?
Yes, we provide materials and expert advice to professional contractors and quality-minded homeowners in Southern Massachusetts and Cape Cod.
Are you an Andersen window dealer?
We are an Andersen Circle of Excellence dealer, offering their full product line and expert installation support for windows and doors.
What are your business hours?
We are open Monday-Friday 7 AM–4 PM, Saturday 8 AM–12 PM. Closed Sundays and major holidays.
Do you offer delivery services?
Yes, we provide next-day delivery for building materials to ensure timely project completion across our service area.
Reviews (4)
Brotherman Bill
Jan 17, 2022 Report
This store is just ok, could use some re organization. Giving it 5 stars solely for the little food truck outside the door off to the side. The people who run it deserve the recognition and I can't find them on Google to leave a review so this is where I shall leave it. The food is amazing and always hits the spot, and at a decent price as well. I have spoken.
Suzanne Moot
Oct 18, 2021 Report
Cabinet choices are very good and Mikw C. is terrific. We got everything done quickly and efficiently.
Inda Clouds
Aug 06, 2021 Report
Prices weren't too bad But the service wasn't great, the man loading up my lumber was very angry and rude. If you don't like your job then quit. Very unprofessional. Other than that it was fine.
Ashur S.
Jun 04, 2021 Report
Someone used my credit card NUMBER fraudulently at this establishment. Meaning they didn't have the physical card itself. You might be asking how's it the businesses fault? Any business that types in numbers of a credit card without the actual card present is a RED FLAG! I get it, some businesses have commonly used Credit Cards on file and use them whenever lets say a contractor phones in. Except I'm not a contractor nor do I even live remotely near there. Businesses should really start asking for ID when presented with credit card information.