New Additions in Fremont, CA and the surrounding Bay Area

We Specialize in ADU (In-Law Units) and Garage Conversions!

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What Does a Home Addition or Extension Include?

New additions can add a whole lot to your home, but it's important that you go about the process the right way. Our team is ready to make it easy and ensure that you get a new addition that will transform your home.

  • Planning

    Before your construction begins, you'll need to know what you want. Having a clear idea about the size, scale, and the price will be vital for ensuring that you are able to get what you want. Our team will discuss your goals with you and help design the right plans for bringing your goals to life.

  • Execution

    We handle the entire process. From securing permits to pouring concrete foundations, plumbing and electrical, all the way through to trim and paint. We make sure that our team works with diligence and professionalism, leaving you with a new addition that is exactly what you dreamed it would be.

  • Clean Up

    Once that construction is finished, our team takes additional steps to make sure that your home is what it should be. We don't leave you with a any sort of mess - we handle the entire cleanup process to ensure your home's new addition looks like it was always part of the home.


What We Guarantee

We know that Fremont, CA and the surrounding Bay Area residents need to trust their remodeling team, and that's why we take so much pride in providing guarantees and promises that let you turn to us with the utmost confidence.

Your Approval

All of the work that we do must be approved by you. From the initial design to any adjustments. We continue to get approval throughout the building process.

Satisfaction Guaranteed

Our satisfaction guarantee means that we don't leave the job site until you are totally satisfied with the work we do.

Guarantee on Workmanship

All of the work that we do is covered by a 5-year workmanship warranty. This includes labor as well as most building materials.


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Why We Are Preferred

Every project depends on the people who create it. That's why our team works hard to deliver the absolute best results every time. There are many reasons that we stand out as the best choice for your new addition.


Olivia | San Leandro

"I hired California Building Solutions on three separate occasions which included, building an oak banister for my family room which completely transformed the room from an outdated black rod iron banister to a beautiful modern looking oak. On a separate job, they sheet rocked my spare bedroom that was damaged from a major roof leak, and replaced my front exterior door. Most recently, they completely remodeled my bathroom. Each time I was left feeling extremely satisfied with the work done."

How It Works

Over the Phone Pricing

We pride ourselves on easy, over the phone pricing with a high value rating

Pick a Day and Time

In 60 seconds, you can book a time that works for you and schedule a time as early as tomorrow

Happiness Guarantee

We'll show up on time and keep working until you're happy. That's our promise to you.





Ready to Get Started, but Need Funding? Check Out Hearth!

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Got a Project? Let's get started!


Give us a call 24/7 to schedule your consultation

Email us anytime! We answer all enquiries within 24 hours on business days

We service the Fremont, Hayward, San Jose, and surrounding areas.

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Free Consultation

Contact Us to Schedule Your Free, On-Site Consultation with Our Team!