Home Additions

Our team of experts will work closely with you to understand your needs and preferences, assess the available space, and create a customized design that seamlessly integrates with the existing structure of your home.
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Remodel Your ADUs With Prime Design & Build
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Home Additions - Enhancing Your Living Space

Key Features:

  • Customized home addition designs that seamlessly integrate with your existing structure
  • Attention to architectural aesthetics and cohesive design to enhance the overall look of your home
  • Quality construction materials and techniques for a seamless integration with existing construction
  • Collaborative approach, working closely with you to ensure your vision is reflected in the final result
  • Efficient project management, ensuring minimal disruption to your daily life during the construction process
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Benefits of Home Additions

Increased living space

Add square footage to accommodate a growing family, create dedicated entertainment areas, or improve functionality.

Personalization

Tailor the design and layout of your addition to match your unique style and preferences.

Value enhancement

A well-designed and executed addition can significantly increase the value of your property.

Avoiding the cost and stress of moving

Expand your home without the need for a full-scale move, avoiding the hassle and expenses associated with relocation.

Over 350+ Projects in Silicon Valley

The Prime Difference

  • Experts on-site for interior design
  • Certified General Contractor, Fully Licensed.
  • Family-Owned and Operated Business
  • Quick response for customer satisfaction
  • Competitive pricing for our services
Experience the "Prime Difference"

Why choose Prime Design & Build?

Attention to Detail

We meticulously plan and execute every project with precision and attention to detail.

Quality Craftsmanship

Our commitment to quality ensures outstanding and beautiful home transformations.

Professional Expertise

With years of industry experience, we create exceptional, tailored home remodels.

Customer Satisfaction

We prioritize your satisfaction with exceptional service and communication.

Our Service Areas

Areas we service

Palo Alto

Los Altos

Saratoga

Fremont

Milpitas

Menlo Park

Santa Clara

Mountain View

Los Gatos

Redwood City

Campbell

Cupertino

Sunnyvale

Silicon Valley

And surrounding cities!

California

Explore the FAQs: 
Your Comprehensive Guide to Additions Remodeling.

If you're considering Additions remodeling with Prime Design & Build, we understand that you may have questions before diving into the process.

Our process begins with a consultation to understand your needs and vision for the ADU. We then conduct a site assessment to evaluate your property’s suitability for an ADU project. Following this, our design team crafts a custom ADU plan that aligns with your preferences and complies with local regulations. After design approval, we handle all the necessary permits before our skilled construction team brings your ADU to life. Throughout the project, we ensure open communication and transparency, keeping you informed and involved at every step.

Yes, ADU construction regulations vary by location, taking into account zoning laws, size limitations, and property boundaries. Prime Design and Build specializes in navigating these regulations, ensuring your ADU project complies with all local building codes and zoning requirements. Our team stays updated on the latest rules to provide you with a smooth, hassle-free construction process.

An Accessory Dwelling Unit (ADU) is a secondary housing unit on the same property as your main residence. These versatile structures can serve as a guest house, rental unit, or home office. Incorporating an ADU into your property can significantly enhance its value by adding livable space. It’s also a great way to generate rental income or accommodate extended family in close proximity, while maintaining privacy.

Yes, we specialize in tackling challenging projects, including those on properties with limited space or unique landscapes. Our experienced team is skilled at coming up with creative solutions to maximize your property’s potential, ensuring the new addition enhances both functionality and aesthetic appeal. We take into account the specifics of your property, adhering to regulations while achieving your desired outcome, even in the most complex situations.

Before embarking on a room addition project, consider your property’s current layout, how the new space will be used, and your budget. It’s also important to think about the long-term impact on your property’s value and how the addition will blend with your existing home structure. Prime Design and Build will help you assess these factors, ensuring the addition meets your needs while complementing your home’s aesthetic and increasing functionality.

Testimonials

Our Happy
Customers

Carmen Hertz ★★★★★ After reviewing eight estimates for converting my garage into an ADU, I ultimately selected them for their outstanding balance of quality and affordability. Collaborating with Noah and his team was a pleasure; they consistently demonstrated punctuality, efficiency, and expertise throughout the project, despite its complexity and size. Noah's accessibility and willingness to provide assistance enhanced our collaboration, offering valuable advice that not only benefited me but also helped in saving costs. The project was completed within the expected timeframe, without any unforeseen expenses, and the final result was truly exceptional. I would gladly choose to work with Prime Design again, and we've even discussed potential future projects together!Jim Mitchell ★★★★★ They demonstrated remarkable dedication, delivering an outstanding result with our room addition project. We are thrilled with the final outcome. Their skilled expansion of our living space highlighted their unwavering commitment and exceptional attention to detail. Not only did they meet our project deadline, but they also exceeded our expectations by completing the work ahead of schedule. Their swift turnaround and exceptional craftsmanship in bringing our new room to life have left us thoroughly delighted. We enthusiastically recommend them for their grade A+ work!Stan Monarch ★★★★★ We had an outstanding experience, particularly thanks to Noah, our dedicated project manager. Over 9 months, Noah's invaluable guidance ensured the successful completion of two significant projects on our property. His expertise and kindness made us feel like we were working with family. The team's exceptional performance contributed to the smooth progress of our ADU and home addition, leaving us thoroughly satisfied with choosing them for our construction needs.Landen Neil ★★★★★ I was delighted by the impressive room addition completed by them. Noah demonstrated exceptional professionalism and expertise throughout the entire project. From our first meeting to the final touches, Noah and his team showed remarkable attention to detail and skill. They finished the project on time, showcasing excellent craftsmanship. I am thoroughly pleased with the outcome and recommend Prime Design & Build to anyone seeking top-tier room addition services. Their dedication to excellence and customer satisfaction truly sets them apart in the industry.Nathan Armando ★★★★★ I recently had the opportunity to collaborate with a company on a room addition project, and I am thrilled with the results. The project manager, Benny, demonstrated exceptional professionalism, expertise, and meticulous attention to detail. The entire team at Prime Design showed skill, efficiency, and a deep respect for my home in the whole process. They completed the project on time and within budget, and the craftsmanship was outstanding. For anyone seeking room additions in Los Angeles, I recommend them for their commitment to customer satisfaction and their extensive expertise.Callan Briggs ★★★★★ I had a wonderful experience collaborating with Prime Design & Build. Choosing them for the design and permitting of my ADU garage conversion was a decision I'm thrilled about. Their work exceeded my expectations. The layout creation process was exceptional, and I was particularly impressed by the intricate details they incorporated into the design. Despite hearing concerning stories from friends about navigating City permitting, my experience was smooth and quicker than I expected. Overall, my experience was excellent, and I enthusiastically recommend Prime Design & Build to anyone considering an ADU addition.Legend Malachi ★★★★★ This team made replacing our roof a hassle-free experience. Their attention to detail and commitment to quality were evident throughout the project. The crew was courteous and ensured everything was perfect before they left. The new roof has enhanced our home’s curb appeal and given us peace of mind during heavy rains. We’re incredibly thankful for their excellent work and would recommend them to anyone!Jaxton Keanu ★★★★★ After reviewing five estimates for converting my garage into an ADU, I ultimately selected Prime Design & Build because they offered an impressive balance of quality and affordability. Working with Noah and his team was a pleasure; they consistently showed punctuality, efficiency, and expertise throughout the challenging project. Noah's accessibility and eagerness to help made the collaboration even more enjoyable. His valuable advice not only saved me money but also greatly benefited the project. The work was completed within the expected timeframe and budget, yielding an exceptional final result. I would gladly choose them again and look forward to potential future projects with them!Sam Gerardo ★★★★★ We were thoroughly impressed by Prime Design’s exceptional organizational skills. Despite the complexities of a home addition, they maintained steady progress and completed the project on time. Noah, a key member of their team, ensured our vision was seamlessly integrated throughout the process. Their dedication and meticulous attention to detail were remarkable, making the entire experience enjoyable. We extend our heartfelt gratitude for their outstanding service!claudia valdez ★★★★★ When planning my home addition project, I needed a reliable contractor and discovered Prime Design & Build. After researching various companies in the area, they stood out as the ideal choice for my project. From the beginning, Noah was incredibly cooperative, providing detailed insights on home additions and working with me to create a budget-friendly plan. The team was thoughtful and flexible, which was especially beneficial for me as a first-time project manager with numerous questions. I truly appreciate their dedication and hard work. Thank you!RHUSTI CALIPAYAN ★★★★★ The team at Prime Design & Build demonstrated outstanding dedication, resulting in a fantastic room addition project! We couldn't be more pleased with the final outcome. Prime Design & Build skillfully expanded our living space, showing unwavering commitment and remarkable attention to detail. They not only met the project deadline but exceeded our expectations by completing it ahead of schedule. The quick turnaround and exceptional craftsmanship in creating our new room have left us absolutely delighted. We recommend them—grade A+ work!Glenn Douglas ★★★★★ My wife and I have lived in our Palo Alto home for thirty years. Just recently we needed help with roofing, new windows, and other household upgrades. We were fortunate to have Daniel Zinger of Prime Design & Build as project manager. Daniel is the best project manager we have ever encountered. Ever! Daniel gave us helpful options at every stage. He never pressured us. He was always available, and delivered on every promise he made. He was astonishing. We give our highest recommendation to Daniel Zinger and Prime Design & Build.Cameron Duffey ★★★★★ They did a fantastic job staying organized. Even with the complexities of our home addition, they kept things on track and finished on time. A key team member ensured everything was exactly as we wanted. Their dedication and attention to detail made the process smooth and enjoyable. We greatly appreciate their excellent service!Melisa Soliman ★★★★★ Highly recommended! Daniel at Prime Design & Build was a pleasure to work with. He is very good with the clients, management of the various teams and creating a great work environment. He's super competent and full of good ideas and help.I was very skeptical of contractors, and really just felt misled by them in the past. Daniel single-handedly turned my opinion around by being honest, trustworthy, extremely competent, pleasant and helpful. We had a fantastic experience with Daniel as the lead. The company owners also had some good suggestions and I thought that was nice of them since it was extra consideration on their behalf.We had everything done, inside and out to prepare our house for sale, including painting, flooring, refinishing cabinets and floors, new laminate, roof fix, LED cans put in, new fans, etc. The house looks beautiful and very professionally done and I'm quite picky.I highly recommend Prime Design & Build, and highly recommend having Daniel as your project lead. I will certainly contact him in the future for all of my remodel/renovation needs.Tracy A Todd ★★★★★ Joseph was a consummate professional which gave us confidence that PD&B was the best company for our new roof project. He and the team did not disappoint! They did an excellent job and we would recommend them without reservation!js_loader
Christina L. ★★★★★ I recently hired Prime Design and Build, with Daniel as my project manager, to work on my home improvement project. We tackled a room addition, flooring,...js_loader

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Silicon Valley's Luxury Home Contractor

At Prime Design & Build, we stand proudly as one of Silicon Valley's premier remodeling and construction authorities, specializing in a wide range of high-quality services tailored to meet your specific needs. Our well-established reputation is built on a foundation of quality craftsmanship and unparalleled customer service. Our dedicated team ensures a custom-tailored interaction with every client, guaranteeing that our high standards are consistently met with each project we undertake.

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416 East Campbell Ave, Campbell CA 95008
3 E 3rd Ave Suite 200, San Mateo, CA 94401

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  • Have you ever stepped into a home and felt an instant connection, as if the space itself welcomed you? That’s the power of designing with intent—a thoughtful approach that blends beauty with purpose, ensuring every detail has meaning. We recently worked on a remarkable 1937 home in Palomar Park, California. The project involved reimagining the second floor to create a master bedroom with a walk in closet and master bathroom while preserving the home’s traditional charm. For the homeowners, this house held decades of memories, and our goal was to honor its legacy while creating a space ready for the next chapter.
  • The homeowners wanted their remodeled space to feel fresh and functional without losing its historic character. This meant every decision, from the layout to the materials, had to strike the perfect balance. We rebuilt the upstairs including reconstruction of the existing bathroom to make an impressive master bathroom and dressing room, and refinished the hardwood floors to preserve the details that tied back to the home’s 1937 roots. By incorporating traditional elements like marble floors and walls in the bathroom , aged wood vanities and new crown molding for the whole upstairs, we ensured the updated design felt authentic and timeless.
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