When you need more living space but love your neighborhood, moving may be your last option. O.T Bay Builders is here to help you with a first option – home additions in San Jose and the Bay Area. Don’t sacrifice what you enjoy – we’re here to provide alternatives and deliver tangible results.
San Jose Home Addition Contractors Families Can Trust
There are a number of benefits that come with doing home additions in San Jose. Our team of experts can expand your usable space, which can also add significant value to your home. Our family owned business provides reliable solutions for improving your home. We make sure you’re always in the loop every step of the way.

Upward & Outward Home Addition Services
We offer a variety of custom home additions that will improve your life at home. O.T. Bay Builders specializes in designing and constructing second floor additions, rear extensions, kitchen additions, bump out additions, and dormer additions. These are excellent options for growing families, an in-law suite or any other situation that may require additional space.
Our Home Addition Process
Adding space to your home doesn’t have to feel overwhelming. With O.T. Bay Builders, we make sure every step is clear, so you stay in control while we handle the heavy lifting.
Initial Consultation: We meet to understand your goals, whether it’s an extra room, expanded kitchen, or in-law suite. We talk through your ideas, budget, and timeline.
Design & Planning: Our design team works with you to design layouts based on your wishlist. Then, we finalize architectural drawings and engineering plans.
Permitting: We take care of all permit applications and inspections, ensuring your project complies with local codes.
Material Selection: With help from our designer, you’ll choose finishes from our showroom or suppliers, making sure everything fits your vision.
Construction & Supervision: Our team gets to work, keeping everything on schedule. You’ll receive updates through our portal and join us for regular walkthroughs.
Project Wrap-Up: Once construction is done, we conduct a final walkthrough to ensure everything meets your expectations. We back our work with a two-year labor warranty.
Rest assured we walk you through the process from start to finish ensuring the design, materials, timeline, and rest of the project details are in line with your vision. Our interior designer will work with you during the design phase to design a functional kitchen and select finishes that are suitable for your lifestyle.
Create More Space with Home Additions
Our team of home addition contractors will provide high quality work and ensure you are completely satisfied with your new space. We offer a two-year warranty on labor. Contact O.T Bay Builders today to schedule a free consultation.



