Massachusetts Basement Remodeling

When it comes to maximizing the potential of your home, few projects add as much function and value as a finished basement. Homeowners across MetroWest are transforming their underutilized basements into beautiful, functional spaces that meet today’s lifestyle needs. Whether it’s creating a cozy family room, a productive home office, or a complete in-law suite, basement remodeling opens the door to endless possibilities. Some homeowners even choose to add an ADU (Accessory Dwelling Unit) for long-term rental income or multigenerational living.

Of course, a basement remodel isn’t just about aesthetics—it’s also about building smart and building safe. Waterproofing and proper moisture control are essential to ensure your new living space lasts for years to come. At CJO Builders, we specialize in basement remodeling in MetroWest Massachusetts with a focus on quality craftsmanship, attention to detail, and personalized solutions for every client. From concept to completion, we help you turn your basement into a space that enhances your home and lifestyle.

Why Remodel Your Basement?

  • Expand living space without moving

  • Add long-term value to your home

  • Create rental income with an in-law suite or ADU

  • Enjoy a safer, drier basement with modern waterproofing and insulation

Our Basement Remodeling Services

  • Basement finishing from start to finish

  • In-law suites & ADUs (Accessory Dwelling Units)

  • Home offices & gyms

  • Entertainment rooms & bars

  • Waterproofing & insulation solutions

  • Custom storage & cabinetry

Our Build Process

  • Consultation and Design

    Every project includes an initial consultation and design plan. From virtual consultation to site visits. Our team will guide you through this exciting process.

    An architect or designer working on blueprints at a desk with a laptop and plants nearby.

  • Construction Phase

    Our team of expert craftsman will build the space you've always dreamed of. We also utilize the latest project management software to keep you updated on progress, financials, and scheduling.

    Three gold shovels buried in sand, likely for a groundbreaking ceremony, with people in formal attire standing nearby.

  • Warranty

    We pride ourselves on standing behind every single project. Once we hand over the keys to your new space we will check back at set interval to make sure everything is running properly

    A blue circular stamp with the words "Warranty" written prominently across a diagonal banner in the center, surrounded by smaller stars and the words "Warranty" repeated at the top and bottom, giving a distressed, official impression.

Make it stand out.

Service Areas We Cover

CJO Builders proudly provides basement remodeling within 11 miles of Ashland, MA, serving homeowners across the MetroWest region. Our team specializes in creating high-end finished basements that add comfort, functionality, and value to your home.

Towns we frequently work in include:

  • Ashland (our home base)

  • Framingham

  • Natick

  • Hopkinton

  • Holliston

  • Milford

  • Sherborn

  • Southborough

  • Marlborough

  • Westborough

  • Medway

If you live in MetroWest and your town isn’t listed here, reach out — if you’re within 11 miles of Ashland, we’d be happy to discuss your basement project.

Get in touch.

It all begins with an idea. Contact us today for a free phone consultation so we can bring your idea to life.

Empty room with light-colored hardwood floors, white walls, a small built-in cabinet with a wine fridge, and a closed white door.

Essential Basement Finishing

Designed for homeowners looking to create a warm and inviting space for their family. Whether you need a functional family room, or a play room for the kids this package offers a perfect balance between comfort and affordability. With high-quality materials and expert craftsmanship, we’ll transform your unfinished basement into a usable, stylish space that adds value and enjoyment to your home.

Package Includes:

  • Basic Framing, drywall installation, paint

  • Standard Flooring (carpet, laminate, vinyl)

  • Basic electrical (lighting and outlets)

  • Basic ceiling (drop ceilings or drywall

Add-ons Available:

soundproofing, plumbing rough ins for future upgrades.

Pricing $30,000 - $60,000

Packages

Bathroom with a white vanity, sink, mirror, toilet, and a walk-in shower with light gray tiles. The floor has matching gray tiles.

Luxury Basement Transformation

For homeowners seeking to turn their basement into an extraordinary space, our Premium Basement Package delivers luxury and customization at its finest. Whether you envision a home theater, a fully equipped gym, or a guest suite with high-end finishes, this package offers unparalleled craftsmanship and top-tier materials to create a space that complements your lifestyle and adds significant value to your home.

Package Includes:

  • Custom framing

  • Mid-range flooring options

  • Custom lighting fixtures and electrical upgrades

  • Waterproofing

  • Plumbing for half bath or wet bar.

Add-Ons Available:

Heated floors, custom cabinetry, golf simulators, theaters, or home office.

Pricing $60,000 - $150,000+

Kitchen with light gray cabinets, white countertop, stainless steel refrigerator, window, and a drill on the counter.

ADU Basement Conversion

Transform your basement into a fully functional Accessory Dwelling Unit (ADU) that offers independent living space for family members, guests, or tenants. This package is perfect for homeowners looking to create an additional source of income or provide a self-contained living space for extended family. With a focus on maximizing space and adhering to all local building codes, we deliver a turnkey ADU conversion that adds significant value to your home.

Package Includes:

  • complete kitchen installation

  • Bathroom Installation

  • Living and sleeping areas

  • Egress windows and basement entrances

  • Full electrical, lighting, and HVAC

Add-Ons Available:

Private laundry area, soundproofing between floors, high end finishes

Pricing $80,000 - $150,000+

Indoor golf simulator room with a large screen showing a golf course, a bar counter with four stools, a mini fridge, and shelves with decorative items.
Basement area with a staircase on the left, a flat-screen TV, beige sofa, artwork on the wall, marbled fireplace, and a bar-style table with four stools on the right.
Interior of a house with newly stained dark wooden floors, light gray walls, white crown molding, and support columns.
Partially open white door revealing a small kitchen area with a navy blue cabinet, a sink, a black faucet, a soap dispenser, a paper towel roll, a blue trash bin, a black bag, and some folded items on top of the cabinet. The walls are light gray, and
Empty basement room with gray walls, dark wood flooring, white built-in cabinets, and ceiling lights; a vacuum cleaner and hose on the floor.
Interior staircase with wooden handrail leading up to a closed door.
Empty room with light-colored wood flooring, a small white cabinet with a dark wood countertop, a built-in wine cooler, and multiple ceiling lights.
Blue built-in storage cabinet with gold handles, a wooden bench top, and multiple cubbies and drawers in a room with gray flooring and a white wall.
Interior view of a staircase with wooden steps and white railings, leading to a doorway in a modern home with gray walls and flooring.

“They are professional, organized, and do tremendous work.”

-T Thomas

A man with curly dark hair, glasses, a nose piercing, and a beard, wearing a dark green sweater in an indoor setting.

“I feel Chris takes pride in his work and delivers quality. He is honest, dependable and very knowledgeable. I couldn't be happier”

-Antonia T

headshot testimonials cjo builders basement

Testimonials

** Real reviews not real pictures :)

“Not only did they do an amazing job but they went above and beyond to work with us on our schedule.”

  • Lexie

A woman with straight black hair, smiling broadly, wearing a blue top, in a lush green environment.