Plymouth, MA · Licensed & Insured

Built on Craft.
Driven by Reputation.

MSDG Construction is a fully licensed and insured general contractor specializing in residential construction, remodeling, and property improvements across the South Shore and Greater Boston.

✅ Licensed MA General Contractor

🛡️ Fully Insured

🏗️ 5+ Years Experience

🤝 One-Stop Construction Solution

💬 Free Consultations

Who We Are

MSDG Construction is a real estate developer, operator, and general contractor specializing in residential and commercial construction, renovation, and property improvements.

We provide comprehensive services from project planning and design through construction and final delivery — serving homeowners and developers across Plymouth, the South Shore, and Greater Boston.

We take pride in helping shape communities through thoughtful development, quality craftsmanship, and relationships built on trust.

Our approach is simple: we serve as a one-stop solution for general contracting and development services — guiding clients from the first conversation through final walkthrough, at any stage of the process.

Why Your Neighbors Love Our Work

Every project we take on reflects our commitment to these three principles.

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Unmatched Professionalism

Our team has deep construction and remodeling expertise — ensuring your project is completed to the highest standard, on schedule, and without cutting corners.

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Precise Excellence

Beauty lies in the details. We're committed to perfecting every finish, joint, and fixture — because the difference between good and great is in what most people don't notice until it's missing.

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Personalized Connection

We treat every project as if it were our own home. From design through final walkthrough, we're your partner — not just your contractor.

Meet the Team

The people behind every project MSDG builds.

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Malcolm Sweeney

Owner & General Contractor

Malcolm founded MSDG Construction with a focus on quality craftsmanship and honest client relationships. He oversees every project from first consultation to final walkthrough, ensuring nothing falls through the cracks.

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Guobin Li

Construction Specialist

Guobin brings hands-on expertise across all phases of residential construction and renovation. His attention to detail and commitment to quality are evident in every project he touches.

Let's Talk About Your Project

Whether you're planning a bathroom remodel or a full home renovation, MSDG Construction is ready to help. Free consultations for homeowners throughout Plymouth and the South Shore.

Request a Free Quote View Our Services

Built on Craft.Driven by Reputation.