Berkeley building company

Berkeley’s best – our decades of experience in all aspects of home construction, project financing and customer care, set us apart from the competition.

What we do

Berkeley’s Most Trusted Company For: ADU Builder, Home Renovations, Roofing, Siding, Windows & Doors, Sound Dampening & More

Renovations

Our 40+ years of expertise in both exterior and interior renovations including; sound dampening, roofing, siding, windows, home theaters, ADU conversions & more, make us the leading choice near you when it comes to choosing a home renovations company!

Sound Dampening

Our 40+ years of expertise in the use of mass loaded vinyl, sound dampening panels, sound proof panels, acoustic wall panels, and more, make us the leading choice near you when it comes to  soundproofing a room, home theater, ADU or entire home!

ADU COmpany

Looking at building an ADU (Additional Dwelling Unit)? Our team can help you through the process, with turn-key, Title 24 compliant design & build packages to fit any square footage requirement.

Roofing

The roof over your head is the key to peace of mind. We all know that no-one can sleep at night knowing they have a roof leak. So don’t compromise when it comes to your roof replacement company. Our expert team has best-in-class warranties.

WIndows & Doors

The right windows and doors can make all the difference, both functionally and aesthetically. Our experts can select and install exactly the right component to fit the form and function of your home.

Siding

The right siding on your home can make a world of difference, both functionally and aesthetically. Our siding pros can select and install exactly the right siding to fit the style and functional requirements of your house.

Our Clients Love Us

“Hartstone Builders did an excellent job managing our construction project. Their team was amazing, and their customer service, project management and communication were top-notch from start to finish. Highly recommended!”

“They took great care of my wife and I during our recent ADU build in San Diego. We searched for an ADU company forever, then we talked to Miguel and he quickly helped us get all the information we needed to make an informed decision. Thanks to the team at Harstone Builders!”

“We had a very positive experience with Hartstone Builders for our recent roofing and siding renovation. They were prompt, professional and polite. White glove service at highly competitive pricing.”

Message Us

Get In touch below. Ask Any Question or Start a Free Quote

Call Us

(844) 844-4624

Office Location

Berkeley, CA

Open Hours

M-F: 8am – 6pm, S-S, 9am – 1pm

Email

hello@hartstonebuilders.com