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Best Bathroom Remodeling Contractors in Cupertino (2024)

May 5, 2025 9 Min Read

Our annual ranking of top construction firms highlights the top companies in Cupertino based on their project volume over the past year, with a focus on relevance. This compilation is derived from permit and contractor information sourced from city, county, and state building departments through our partners at BuildZoom. For further information regarding data accuracy, please consult the note at the end of this article.

Construction data plays a vital role for various professionals in the construction industry, offering valuable insights for different stakeholders. For businesses providing materials and services to general contractors, using data analytics in the construction industry can help them connect with their target audience more effectively. By tracking milestones such as the launch of major construction projects or significant shifts in construction activity, businesses can time their outreach when contractors are in need of new resources. This ensures that their services are relevant and engaging at the right time. Additionally, by analyzing contractor data and understanding growth patterns, material suppliers and service providers can focus on contractors who are on an upward trajectory. Subcontractors can also use similar strategies to target the general contractors they want to collaborate with on upcoming projects. For real estate developers, property owners, and others who require contractors, construction data offers a way to validate the expertise and quality of contractors and subcontractors, with detailed insights into their construction history and contractor licenses. This approach helps ensure that the right professionals are selected based on their proven capabilities and track record in the industry.

Business# Projects (’23)Average Contract Value
Custom Home Investment 4 $38K
Build the Bay Inc 4 $15K
EDR Design Build 4 $68K
K-Designers 4 $50K
Top Home Builders Inc 4 $79K

Custom Home Investment

Address:
2092 Concourse Dr., Suite #9, San Jose, CA 95131

Custom Home Investment has been a trusted name in the construction industry since 2005, bringing two decades of expertise to both residential and commercial projects. Known for their commitment to reliability and quality, the company combines expert craftsmanship with strategic insight to deliver exceptional results that stand the test of time. With a mission rooted in more than just construction, Custom Home Investment focuses on educating and empowering clients, ensuring they are informed and confident throughout every phase of their project. Their team is recognized not only for on-time and detail-oriented execution but also for creating long-term value through tailored construction investment strategies. Offering a comprehensive suite of services—from structural engineering to interior design and custom furniture—the company transforms client visions into enduring realities. Their collaborative approach builds strong relationships and thriving communities, anchored by a deep understanding of both design aesthetics and functional needs. Notably, their integrated design and construction model has helped clients maximize returns while maintaining superior quality. With a strong portfolio of successful builds and satisfied clients, Custom Home Investment continues to set the standard for excellence, innovation, and client care in the construction industry.

The San Francisco Architects team analyzed development records from Cupertino’s Community Development Department to track Custom Home Investment’s activity. In 2021, the company completed a $350,000 project building a 750 sq. ft. detached ADU, which included two bedrooms and two full bathrooms. The following year, a smaller $97,674 detached ADU—748 sq. ft. with two bedrooms, two bathrooms, and a kitchen—was constructed behind a primary residence.


Build the Bay Inc

Address:
1630 Oakland Rd., San Jose, CA 95131

Build the Bay Inc is recognized as one of Northern California’s premier kitchen and bathroom remodelers, serving the South Bay, East Bay, and Peninsula with a reputation built on quality, reliability, and exceptional design. With years of hands-on experience in both modern and traditional construction, their expert team combines high-end craftsmanship with outstanding project management to consistently deliver stunning results. Fully licensed, bonded, and insured with the CSLB, Build the Bay offers a full spectrum of remodeling services—including sleek kitchen transformations, luxurious bathroom upgrades, and custom home additions and ADUs. Their design-build approach ensures seamless execution from planning and permits to final finishes, always prioritizing transparency and client satisfaction. Known for meticulous attention to detail and a collaborative style, the company works closely with homeowners to select premium materials and create tailored layouts that align with each client’s vision. Build the Bay stands out not only for its quality finishes but also for its commitment to treating every home with care, providing thorough daily cleanups and respectful service. Their growing list of satisfied clients speaks to a consistent track record of excellence and innovation. Whether it’s reimagining a compact kitchen or building a spacious addition, Build the Bay transforms ideas into lasting, beautiful spaces. With a client-first philosophy and competitive pricing, they remain a top choice for homeowners across the Bay Area seeking reliable, high-end remodeling solutions.

Data sourced from the Cupertino Community Development Department, analyzed by the San Francisco Architects team, highlighted recent projects by Build the Bay Inc. In 2023, they undertook a $35,000 bathroom remodel. The following year, they handled a $25,000 renovation involving two bathrooms.


EDR Design Build

Address:
16185 Los Gatos Blvd., Suite #205, Los Gatos, CA 95032

EDR Design Build is an award-winning, integrated design-build firm with a strong reputation for delivering high-end residential transformations throughout the Bay Area and Silicon Valley. With years of industry experience, the company has successfully partnered with homeowners, architects, and designers to complete a wide range of large-scale projects—from new construction and complete home remodels to custom ADUs, kitchen renovations, and room additions. Known for making the remodeling process simple and joyful, EDR Design Build prioritizes peace of mind at every stage, offering personalized service and meticulous attention to detail. Their expert team leverages cutting-edge technology and premium materials to ensure innovative, accurate, and lasting results. Each project is treated as a unique opportunity to reflect the homeowner’s personality and lifestyle, with the team providing guidance from the initial consultation through final inspection. The firm’s collaborative approach and design-forward mindset have earned them accolades and a loyal client base. Whether modernizing a single room or reimagining an entire home, EDR Design Build stands out for its craftsmanship, communication, and commitment to exceeding expectations. Their reputation as a trusted leader in the Bay Area remodeling space is built on a foundation of quality, transparency, and client satisfaction.

According to the Cupertino Community Development Department and further analysis by the San Francisco Architects team, EDR Design Build was responsible for two major remodels. A 2024 project, worth $503,484, altered the interior layout of a single-family home—relocating the kitchen, family room, a bathroom, and a bedroom. In 2021, the company undertook a $60,000 renovation of two bathrooms and a kitchen over a 300 sq. ft. area.


K-Designers

Address:
2440 Gold River Rd., Suite #101, Rancho Cordova, CA 95670

K-Designers, established in 1978 by Larry and Lee Judson, has grown from a small team of four into one of the largest and most respected remodeling contractors in the United States, now employing over 260 professionals. With more than 45 years of experience and over 130,000 satisfied customers, the company has consistently ranked among the top five largest remodeling firms in the Western U.S. for over four decades. Known for its commitment to quality, value, and customer satisfaction, K-Designers offers a wide range of services including siding, window installation, and full home renovations, all backed by industry-leading warranties and exceptional service. The company has earned over 15 national awards for design excellence, craftsmanship, and premium product use, and maintains an A+ rating with the Better Business Bureau. Their approach focuses on understanding each homeowner’s needs and lifestyle, ensuring that every project integrates seamlessly into the client’s daily life. K-Designers stands out not just for its size and reach, but for its emphasis on customer care, meticulous cleanup, and thorough project execution. They offer exclusive, high-quality materials and flexible financing options, making expert remodeling accessible and stress-free. Fully licensed and insured, K-Designers continues to uphold the highest standards set by industry authorities and regulatory bodies, earning a reputation for reliability, innovation, and long-term value. With a strong foundation and an eye toward growth, K-Designers remains dedicated to delivering exceptional home improvement experiences for years to come.

The San Francisco Architects team analyzed data from the City of Cupertino Community Development Department to uncover renovation projects completed by K-Designers. In 2025, the company remodeled two bathrooms for $26,638. Earlier, in 2022, they carried out a $23,319 renovation focused on a primary bathroom.


Top Home Builders Inc

Address:
5450 Thornwood Dr., Suite E, San Jose, CA 95123

Top Home Builders Inc has been a trusted name in the home remodeling industry for over 15 years, specializing in custom home building, ADU construction, and home renovations throughout San Jose. With a dedicated in-house team of architects, engineers, and project managers, the company ensures a seamless and efficient process from start to finish. Their commitment to excellence is reflected in their full licensing and insurance in California, guaranteeing safe, code-compliant renovations. Known for their meticulous attention to detail and exceptional craftsmanship, Top Home Builders has earned a reputation as the #1 home remodeling contractor in San Jose. They offer a comprehensive range of services, including kitchen and bathroom remodels, full home renovations, and custom home builds, all backed by warranties on labor and materials. By working closely with homeowners, Top Home Builders ensures that each project aligns with the client’s vision, while also offering expert guidance and transparent communication throughout. Their emphasis on fair pricing, detailed estimates, and no-surprise service has earned them 5-star results and 100% customer satisfaction. As a family-owned and operated business, Top Home Builders values their relationships with clients, treating each home as if it were their own. Whether updating a kitchen or creating a custom dream home, Top Home Builders combines experience, skill, and a passion for quality to deliver lasting results.

Data obtained from Cupertino’s Community Development Department and assessed by San Francisco Architects highlighted two major remodeling projects by Top Home Builders Inc. In 2025, they executed a kitchen and two-bathroom remodel for $152,800. In 2022, they completed a $120,000 project involving the kitchen, master bath, and hall bath.


Note: The data used to compile this list may not be complete based on the availability of permit data – collecting and consolidating this data is a time-intensive and difficult task. It may not be complete in all areas due to jurisdictional reporting requirements and the availability of data. Job values and permit fees should be taken as estimates rather than exact values, based on the most complete permit and contractor data available. Additionally, number of projects and typical job size may be updated per contractor request.

The time period for the data used for this ranking was the past 365 days, plus an additional 45 days to account for the average timeline of a building permit. If you have any suggestions on the data or see any corrections that you’d like to give feedback on, please fill out this form. For more insights on construction data outside that are not directly related to contractors, there are other resources available as well.

Author

  • Alex Mericle is the Chief Editor at San Francisco Architects with five years of experience in the construction space. Alex has always had a strong interest in residential and commercial construction and architecture, and he has built up technical experience with building permit data, subcontractor operations, and materials procurement over the years. On top of his experience at San Francisco Architects, he has prior experience at BuildZoom. His analytical skillset, honed through a degree in Business Analytics from Creighton University and from his work experience, allows him to transform complex construction data into actionable insights and useful, captivating content. Expertise: Residential and Commercial Construction, Building Permit Data, Home Design and Build, Architecture, Subcontractor Operations, Material Procurement Key Highlights: Over 5 years of experience writing and editing in the construction space, Chief Editor at San Francisco Architects, Previous experience at BuildZoom Education: Creighton University, Degree in Business Analytics

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