At Michael Marini Construction, we know that the journey starts with understanding both the potential and the requirements involved. With years of experience guiding clients through everything from design ideas to local building rules, we’re here to help make your ADU dreams become a reality while enhancing your property value.

Marini Construction – ADU Contractor in Gilroy, CA

About Marini Construction

ADU Construction in Gilroy, CA

Building an Accessory Dwelling Unit (ADU) in Gilroy can seem like a maze of decisions and regulations, but it doesn’t have to be overwhelming. If you’ve been considering adding extra space to your home for a rental, a guest house, or to accommodate family, you’re not alone—many homeowners are exploring this option to maximize their properties. Here at Michael Marini Construction, we know that the journey starts with understanding both the potential and the requirements involved. With years of experience guiding clients through everything from design ideas to local building rules, we’re here to help make your ADU dreams become a reality while enhancing your property value. Whether you have specific visions for your new space or need inspiration, our team is ready to assist you at every step.

What Is an ADU?

An Accessory Dwelling Unit (ADU) is a secondary, self-contained living space built on the same lot as a primary home. While compact in size, an ADU includes all the essentials of a standalone home, such as a kitchen, bathroom, living area, and separate entrance, making it a fully functional residence.

ADUs come in a variety of forms depending on the layout of your property and your personal needs. These include:

  1. Detached ADUs – freestanding structures often built in the backyard.
  2. Attached ADUs – units that share a wall with the main home but have their own entrance and living space.
  3. Garage Conversions – existing garages converted into livable units with updated utilities and interiors.
  4. Interior Conversions – such as finished basements or attics repurposed into private, habitable spaces.

What sets ADUs apart is their versatility and efficiency. They’re designed to fit into existing residential zones without drastically changing the footprint of your property. Whether modest or modern, an ADU can serve a wide range of purposes—from long-term living to temporary stays—all while blending seamlessly with the main home’s structure and style.

With increasing demand for flexible housing, ADUs are becoming a smart, legal, and highly valuable solution for homeowners across California.


Marini Construction Reviews

Jamie Fieber

2025-05-02
"Marini Construction did a full remodel for me. Kitchen, 4 bathrooms, floors, lighting, built in desk, and a custom staircase. Mike had fabulous suggestions for customizations and his attention to details was amazing. He checked in every couple of days, if not daily. 1010."

PC Monastery

2025-04-29
"We had a wonderful contractor and when he retired, we were unable to have any work done. When we met Mr. Marini, it was a great blessing. It is a great gift of God for us to have someone so trustworthy and conscientious. All of his workers have been courteous and capable. The work has been completed in a timely and professional manner. We highly recommend them. As cloistered nuns, we really needed someone we could trust and we have found that in Marini Construction Company. May God bless you!"

nancy maynard

2025-04-29
"Mike and crew did an amazing job on our remodel. I'm one of those people that research and take tonnes of notes... I've heard so many horror stories about other contractors... so I was skeptical... I took photos of the whole process. Every time we met I emailed him a list of what I wanted to talk about with a follow up email to confirm after... he put up with all of this. I had definite ideas about what, where and how I wanted things...yes put the outlets at 24 inches... I spray painted all my locations... I even talked to the subcontractors... so I was not an easy client. Our permits took months... Not only does he have knowledge and skill, but so do his crew...Plus the remodel is a work of art... good construction is functional art... I knew other contractors where we lived on the coast...but I wanted someone local...with local connections. I also wanted to buy American as much as possible... We appreciated how changes and corrections were handled...I highly recommend Marini Construction... you would be lucky to have him. Do your research and stay involved... if you want specific things... you will be pleased. And thanks to all his staff and crew."

Jerome Van Crayelynghe

2025-04-29
"Great contractor - referred originally by a friend, Mike and his team have been great! Our first interaction was a demonstration of integrity where, following some water damage in our wall, he pointed us to a solution that did not include his services! He has since done work for us from kitchen counter modification, custom sliding doorwindow replacement to fence work and custom gate in an archway. Every time, great work with attention to details, review of his team's work daily and addressing anything that didn't meet his standard with or without prior comments from us! Sincerely appreciate his his team's work and will use him again!"

Alexis Pierson

2025-04-29
"I've had Mike and his construction crew remodel bathrooms, my kitchen, and replace windows. Recently, he did a wonderful job remodeling my kids' bathroom. He is very clear about the cost so there are no surprises. My husband is very particular about how work is completed and Mike is calm when answering his questions and will make sure the job is done correctly. I highly recommend anyone who has a project and needs a trusted contractor."

Location

Did we help?

Please let Marini Construction know that you found them on Top ADU Pros to allow us to continue helping others find the best adu contractors.

get in contact