GR Innovative Builders Inc.

GR Innovative Builders Inc. is a Bay Area ADU contractor specializing in accessory dwelling units, granny flats, and in-law suites. Completed projects in Richmond, Oakland, Lafayette & Pinole. Featured in Sunset Magazine.

GR Innovative Builders Inc. – ADU Contractor in Richmond, CA

About GR Innovative Builders Inc.

GR Innovative Builders Inc. — ADU Construction Services

GR Innovative Builders Inc. is an ADU contractor based in the San Francisco Bay Area, with completed projects across several cities including Richmond, Oakland, Pinole, and Lafayette, California. The company focuses on the design and construction of accessory dwelling units, helping homeowners add functional living space to their properties.

Accessory dwelling units are more than just extra square footage. They offer a practical solution for families looking to accommodate multiple generations under one roof while preserving individual independence. Whether the goal is to house aging parents, provide space for a returning adult child, or simply make better use of an existing property, an accessory dwelling unit builder like GR Innovative Builders Inc. can help bring that vision to life.

Completed ADU Projects Across the Bay Area

GR Innovative Builders Inc. has worked on a range of ADU projects throughout the region. Their portfolio includes:

A 722 square foot office and bathroom unit with an exterior shower in Lafayette, CA
A 400 square foot one-bedroom, one-bathroom ADU also in Lafayette, CA
ADU projects completed in Richmond, Oakland, and Pinole
An upcoming ADU project in Piedmont, CA

Their work has received recognition, including a feature in Sunset Magazine, which highlights the quality and design sensibility they bring to their builds.

Working With Engineers and Designers

GR Innovative Builders Inc. assists homeowners in connecting with a qualified engineer and designer team to get their ADU project off the ground. This collaborative approach helps ensure that each detached ADU or accessory unit is planned and executed with the right expertise from the start.

For homeowners considering a granny flat, in-law suite, or a backyard cottage, GR Innovative Builders Inc. offers a structured process to move from initial concept through to completed construction. Their experience across multiple Bay Area cities gives them familiarity with local requirements and site conditions.

If you are exploring options for adding an accessory dwelling unit to your property, GR Innovative Builders Inc. is a ADU builder worth considering for projects in the greater Bay Area.

Services

GR Innovative Builders Inc. performs the following services

Architecture & Design
Construction

GR Innovative Builders Inc. Reviews

Jenypher Hannay

2025-09-22

"They deserve 10 stars. Simply the best in every way. The entire team - Marlyn, Gilbert and Gus - were lovely to work with, even under stress and pressure. Their professionalism was unwavering. We did a complex kitchen remodel with structural changes, and they were thorough and detailed in their work, provided white glove service and kept the project moving, staying ahead of schedule and within budget. They were transparent about change orders and did not nickel and dime us. Although they weren't the cheapest, they weren't the most expensive and were spot on on their original budget and quote. Worth every penny. Communications was terrific, service was 5 star, and the craftsmanship is superb. I would work with them and recommend them at every opportunity."

Hash Hadi

2025-09-11

"I'm an architectural designer, and Ive had the pleasure of working with GRI Innovative Builder on a couple projects, and each experience has been more outstanding than the last. The GRI team brings not only professionalism but also genuine warmth and positivity to the work. Communication is always clear and effective, which makes the entire process smooth and enjoyable. What truly stands out is their constant positive attitude and approachable personalitiesworking with them never feels like just business. Over time, Ive come to consider them not only trusted collaborators but also friends. I highly recommend GRI Innovative Builders to anyone looking for a partner who combines skill, integrity, and a genuinely great spirit."

Naomi Berman

2024-11-25

"The absolute BEST contractor!!!! Super responsive, kind, helpful, fast and quality work!!! Father and daughter dream team!!!! We are beyond thankful and happy!!!!!"

Kenneth Woo

2024-08-30

"Through Cottage ADU, we recently had the pleasure of working with GR Innovative Contractor on the construction of our ADU Accessory Dwelling Unit, and the experience was nothing short of excellent. From start to finish, their professionalism, attention to detail, and commitment to quality were evident in every aspect of the project. Throughout the project, the team maintained excellent communication. They kept us informed of progress, were transparent about timelines, and were always available to address any questions or concerns. Their collaborative approach made the entire process smooth and stress-free."

Kelly Turner

2024-05-25

"We chose GR Innovative Builders to build an ADU in our backyard in Berkeley and we could not be happier! Gilbert and Marlyn are a fantastic team. They patiently answered a million questions I had as we went along and I always felt like they were going above and beyond to make sure I was happy with the build. Billing was clear, with no surprises, and all of the subcontractors seemed excellent I could write odes about the tiler!. Gilbert clearly cares about what he does and about the quality of the work and the final result is beautiful. I'm already scheming about what other remodeling projects I can have them work on."

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About GR Innovative Builders Inc.

GR Innovative Builders Inc. — ADU Construction Services