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Lower Cape · Harwich Center, Harwich Port and East Harwich

Basement Finishing & Remodeling in Harwich, MA

Designed with you, built in our Mashpee shop and installed by our own crew. Free in-home estimates in Harwich, MA.

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Made in Mashpee for Harwich homes

GR Custom Woodwork finishes basements in Harwich, 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.

Harwich includes Harwich Center, Harwich Port, East Harwich, West Harwich, North Harwich, South Harwich and Pleasant Lake. We work in summer homes near the harbor and year-round houses inland.

We finish basements for homes in Harwich Center, Harwich Port, East Harwich, West Harwich, North Harwich, South Harwich and Pleasant Lake, and across Harwich.

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.

Our recent work

Finished basement with a media wall and electric fireplaceBasement wet bar with a teal islandFinished basement with built-in TV cabinets

How it works

  1. 1

    Visit and measure

    We come to your home in Harwich, measure the space and talk through what you want.

  2. 2

    Design and estimate

    You get a design and a written estimate. Finishes and hardware can be chosen in our Mashpee showroom.

  3. 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. 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 Harwich, 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.

More in and around Harwich

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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.