Foundation contractors
The stuff that everything else stands on (literally)
A foundation isn't glamorous, but it's the most important part of any structure. Bay State Design & Construction builds and repairs foundations for new homes, additions, and garages across Central and Greater Massachusetts — with the same in-house design and build process we bring to every project.





Team Experience
Projects
rating Average
Our Approach
We treat foundation work like what it is: the most important part
Most homeowners only think about foundations when something goes wrong. But a foundation built right from the start is what keeps everything above it performing the way it should...for decades.
We've poured concrete foundations, laid block, installed sonotubes, and built grade beams for new homes, garages, and additions of every size. Every project starts with a proper site assessment, the right engineering, and a plan that accounts for soil conditions, drainage, and load requirements before a single shovel hits the ground. It's not the most visible work we do. It's the most important.
Foundation work is often the starting point for something bigger — a full home addition, a new garage, or an accessory dwelling unit. If your project is growing, our FlexUnit™ service might be the smarter path.

REASONS TO UPDATE YOUR WALLS
When do you need a foundation contractor?
- You're building a new home and need the foundation done right from day one
- You're adding onto your home and the addition needs a proper footing
- You're building a new garage and want it built to last
- Your existing foundation has cracks / settling / water intrusion that can't be ignored
- You're converting a crawl space to a full basement
- You need a rat slab to seal and protect an existing crawl space or utility area
What we can build
Foundation ideas
Most homeowners never see this part of the build — but it's the part that matters most. Here's a look at what we do before the walls go up.
Our Portfolio
Snapshots of recent projects
REviews
Hear from happy homeowners
Great guys and easy to work with! I couldn't be happier with my beautiful new kitchen!
The best! Gave a super reasonable estimate and walked me through all the steps and timeline , finally have my (dream) kitchen.
I highly recommend Bay State Design & Construction to anyone looking for reliable, skilled, and professional construction services.
These guys are amazing! Helped me build a two story addition with a master suite and I couldn't be more thrilled with the product.
The guys from Bay State design were prompt well priced and kept my project moving without missing a step. Great work guys!
I hired these guys to build an attached garage at my house. Throughout the entire process they went above and beyond all expectations and their pricing was super fair.
This team is very professional, communicative and great to work with. Gio provided comprehensive building plans for me within a short timeframe, as promised.
How it Works
Typical kitchen remodel process







Site Visit & Consultation
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We visit your home, meet with you, and walk through your vision, goals, and any structural considerations.

Detailed estimate
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We develop a thorough estimate based on your agreed scope of work — no surprises, no vague line items.

Contract & Design Session
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Once you accept the estimate, we send over a contract and schedule a design session to lock in materials, finishes, and layout.

3D Render & Construction docs
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We produce a 3D rendering of your space and all structural construction documents entirely in-house.

Permits & materials
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We apply for all required permits and order long-lead materials as soon as they're issued — keeping your project on schedule.

Construction & inspections
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Work begins. We manage every phase of construction and every required inspection through final sign-off so nothing gets missed!
Bay State Design & Construction
Why homeowners choose BSDC

One point of contact, start to finish
No chasing down architects, contractors, or permit offices. You have one team and one person to call, from first sketch to final walkthrough.

We design around your budget
Many firms design the dream, then hand you a bill that doesn't match it. We start with your number and build the plan around it — no sticker shock.

Your vision survives the build
A lot gets lost when the design firm hands off to the contractor. We can draw the plans and build to them. AKA: what you approved is what gets built.

Your timeline is ours to protect
When design and construction live under one roof, no one else's schedule can slow yours down. We control the process so you're not waiting on a separate third party to move forward.
Frequently Asked Questions
Interior painting & wall treatment FAQs
Full basements, crawl spaces, rat slabs, concrete foundations, block foundations, sonotubes, and grade beam foundations. The right type depends on the structure, the site, and the soil conditions — we assess all of it before recommending an approach.
Common signs include visible cracks in foundation walls, doors and windows that stick or no longer close properly, water intrusion in the basement, and uneven floors above. If you're seeing any of these, it's worth a conversation sooner rather than later.
Yes. Additions require their own footing and foundation work, and getting it right is critical to how the addition connects to and performs alongside the existing structure. We handle the full scope in-house.
A rat slab is a thin concrete layer poured over a crawl space floor. It discourages pests, reduces moisture intrusion, and makes the crawl space easier to access and maintain. It's a straightforward upgrade that makes a real difference in how a home performs over time.
A grade beam is a horizontal concrete beam that sits at or just below grade level, typically used with sonotube piers or in areas where a full basement isn't practical. It distributes the structural load of the building along the ground rather than transferring it through a full foundation wall.
A sonotube is a cylindrical concrete pier poured into the ground to support a structure above it — commonly used for decks, porches, additions, and garages. Simple, effective, and code compliant when installed correctly.
Every project comes with a 1-year workmanship warranty. If something isn't right with our work, we come back and make it right.
Starting from the ground up?
Everything above ground depends on what's below it. Let's make sure yours is built right.








