Home Additions Northern CA | San Francisco Room Addition Contractor
Bioneer Builders, Contractors  General, San Anselmo, CA

Home Additions

Green Building - A Greener way Forward Plans & Design, Room Addition & New Construction for the Bay Area, CA

Your existing home is just too small then considers expanding upwards for the extra space that you need. A second floor addition can complement your home’s interior and exterior style, or can create an entirely new style, while providing the needed room. Building “up” is the perfect place for additional bedrooms and an extra bath.

If your family is growing or you want a bigger house and can’t afford a new one, or even if you want to increase your home equity, custom room addition is the solution for you. By adding some SQF to your existing home you will get your bigger space for less expense. Perhaps your dining room or master bedroom just don’t seem to provide you.

with either the right amount of empty space or on the other hand, windows. With an in-house architect at your service, you can be sure that if it can be done, we’ll get it done in a timely and cost-effective manner.

For more and more people, remodeling an existing home provides an ideal solution. Instead of moving to a new or larger house, homeowners are building additions or extensions to turn their ideas into reality. Bioneer Builders vast experience in developing home additions throughout San Francisco, Richmond, Oakland, and surrounding areas has brought many happy endings to homeowner’s dreams. Our team includes on-staff architects, interior designers, engineers, Design and blue print drafters. We construct new master bedrooms, master bathrooms additions, 1st and second story additions, family rooms addition, and kitchen extensions. We do it all! Let our professional crew come up with workable solution for your space. One that will work with local county Department of Building and Safety codes and regulations, your needs, and most important – your budget.

Contact us for a consultation on your kitchen or bathroom remodeling or building project.


Bioneer Builders & Design
Peter Alexander
License #558061

7 Arroyo Ave

San Anselmo, CA 94960.
Office: (415) 717-9501

Office: (408) 807-2935



Peter is definitely in my speed dial!
"Peter Alexander works exclusively with the finest craftsmen and materials and is personally involved in every aspect of his projects. This attention to detail is what truly makes them great."

New Kitchen for my growing family!
"I just got my kitchen installed last week and I'm thrilled! It was a pleasure to work with Peter - He is very professional and the fact that Bioneer Builders' staff really made everything so much easier for me. He was extremely sensitive to excellent design and without any clock ticking really gave me some outstanding and creative ideas about how to design my space as a whole - as opposed to hanging "cabinets" on the wall. He definitely is extremely talented and the project management was impeccable. The product is top of the line in the US. AMAZING."


We’re sure you’ll be 100% satisfied. We offer a 1-year warranty on defects from material and workmanship. In fact, almost all of our clients have hired us for more than one project. How many other contractors can say that?

The only way you’ll find out how we can help you create the kitchen of your dreams is to contact us today. We’ve made it very easy. Either request an estimate online or call Office: (415) 717-9501 / Office: (408) 807-2935 today to schedule your free estimate and consultation.

Thanks for taking a look at our company. We look forward to working with you.

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