Upper Cape · Mashpee Center, New Seabury and Popponesset
Basement Finishing & Remodeling in Mashpee, MA
Designed with you, built in our Mashpee shop and installed by our own crew. Free in-home estimates in Mashpee, MA.
- 5.0 rating on Google
- Built in our Mashpee shop
- All work in-house, no subcontractors
- Featured in Cape Cod Life and Cape Cod Home
Made in Mashpee for Mashpee homes
GR Custom Woodwork finishes basements in Mashpee, MA, turning unfinished space into family rooms, media rooms, wet bars and guest space, with the built-in cabinetry made in our own Mashpee shop.
Our shop and showroom are in Mashpee, at 68 Mercantile Way, so Mashpee homes get the shortest trip from our bench to your door. We work all over town, from Mashpee Center to New Seabury, Popponesset and Mashpee Neck.
We finish basements for homes in Mashpee Center, New Seabury, Popponesset and Mashpee Neck, and across Mashpee.
What we build
Family and media rooms
Media walls with built-in TV cabinets, shelving and fireplaces, laid out around how your family uses the space.
Wet bars and kitchenettes
Cabinets, islands and open shelving for a second kitchen or a bar downstairs.
Guest rooms and offices
Finished rooms with closets and built-in storage for guests, work or hobbies.
Storage that fits
Built-ins under stairs and along walls so the basement stays organized after it is finished.
How it works
- 1
Visit and measure
We come to your home in Mashpee, measure the space and talk through what you want.
- 2
Design and estimate
You get a design and a written estimate. Finishes and hardware can be chosen in our Mashpee showroom.
- 3
Built in our shop
We cut, assemble and finish every piece in our own shop, so quality is checked before it reaches your home.
- 4
Installed by our crew
The same team installs, trims and finishes the work on site, with no subcontractors.
What our clients say on Google
- ★★★★★
“Gustavo and his team have done an absolutely amazing job on many different projects at my home. They finished an 1,800 square foot basement…”
Annie Fisher · Google review, April 2025
- ★★★★★
“Working with Gustavo and his team was a breeze! From start to finish he was honest and responsive. His work is very detailed and precise. Everything was completed on time and on budget, and that is very hard to find around here!”
Colleen Cohen · Google review, May 2022
- ★★★★★
“Gustavo and team are the ones to hire. They show up on time and deliver a product with attention to detail. I've used GR Custom Woodwork on a few projects and would not hesitate to refer them to others.”
Kevin Sarney · Google review, May 2022
Frequently asked questions
Do you offer free estimates for basement finishing?
Yes. We visit your home in Mashpee, MA, take measurements and talk through what you want, then send a written estimate. Call (508) 648-8998 or use the form on this page.
Who does the work?
Our own team, start to finish. We cut, assemble, paint and install everything ourselves, with no subcontractors, so the person who measured your space is part of the crew that installs it.
What can a finished basement include?
Most of our basement projects combine a living area with built-in cabinetry: a media wall, a wet bar or kitchenette, storage and sometimes a guest room or office.
Do you build the cabinetry for the basement too?
Yes. The cabinets, media walls and shelving are built in our Mashpee shop and installed by the same crew that finishes the space.
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Other services in Mashpee
- Custom Cabinets in Mashpee, MA
- Kitchen & Bath Cabinet Installation in Mashpee, MA
- Custom Carpentry & Woodworking in Mashpee, MA
- Trim & Finish Carpentry in Mashpee, MA
- Kitchen Cabinets in Mashpee, MA
- Built-Ins & Bookcases in Mashpee, MA
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- See our basement remodeling work
- All the towns we serve
Let’s bring your vision to life
At GR Custom Woodwork, we are dedicated to delivering exceptional custom woodworking services that transform your space into something extraordinary.




