Custom ADU Builders

An accessory dwelling unit (ADU) offers a way to create more livable space on your property. Whether you want to remodel, expand or build a new unit, bring your ADU design and construction vision to life with Valley Home Builders. As custom ADU builders, our in-house ADU architects, designers,  and project management teams create aesthetically pleasing results to fit your lifestyle and goals. We offer comprehensive additional dwelling unit plans tailored to your Bay Area property. We are ADU builders in California committed to providing exceptional service.

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What are ADUs?

An ADU is an independent dwelling unit, also called a secondary suite, accessory apartment, mother-in-law apartment or granny flat, also known as anchored tiny homes or cottage homes. Accessory dwelling units are located on the same lot as a single-family home and can be attached ADUs connected to you main structure or detached ADUs separate from your house. Homeowners who choose to build ADUs enjoy the freedom of creating custom floor plans and incorporating tailored design choices to align with their property layouts and meet their needs.  If you’re looking to build an ADU or do a home remodel, we can help you navigate the process.

Benefits of Accessory Dwelling Units

Instead of moving and purchasing new land, adding to your existing residence offers a cost-effective way to accommodate your needs. There are many benefits of ADUs, including:

An ADU can significantly boost property value by providing additional living space.

If you want to give teenagers some extra freedom, junior accessory dwelling units are a wonderful option.

ADU builders can help you build your dream office or studio. An ADU can be the perfect solution for a home office, offering the benefit of being on your property while remaining separate from the main house.

Create a new bedroom or guest room to welcome long-distance relatives or friends.

Popular ADU Projects

Valley Home Builders is your go-to ADU builder in California. We can remodel or expand your independent dwelling in compliance with local zoning laws and according to your desires, budget and needs. From compact studios to spacious two-bedroom and two-story ADUs, we customize every design to your needs. The most popular ADU projects include:

Backyard Cottages

Enjoy additional privacy with a backyard ADU or backyard home in the comfort of a backyard cottage. Whether you need a home office, yoga studio, or workout space, building an ADU in backyard lots offers nearly endless opportunities to expand your living space. They are also a great option as the kids grow older and want to exercise more independence in a space of their own.

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Guest Houses

Whether your guests will be staying overnight or indefinitely, you want to offer them spacious, private accommodations. A guest house can feature a variety of amenities, including a bathroom, kitchen and living space, so your visitors can enjoy the comforts of home as well as privacy. Parents or other relatives can also gracefully age in place in a separate guest house, giving everyone greater peace of mind.

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Garage Conversions

Garage conversions are an affordable way to build an ADU because the foundation and basic infrastructure, like walls, electrical connections and the roof, are already there. Convert your garage into anything you like — for example, a home gym, art studio or even an indoor garden. With features like plumbing, electricity and windows for natural light, a garage conversion can truly transform your space.

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Our ADU Services in the Bay Area

Valley Home Builders makes expanding, renovating or remodeling your space easy. Our team handles all the planning and task-related details from start to finish. By working with our premier ADU architects near you, our in-house design and construction team can plan and build the exact space you need to enhance your home.

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Free Consultation 01

Free Consultation

During a free consultation, our experts explore your ideas and develop a plan to bring your inspiration to life. We provide recommendations to suit your preferences and answer any questions you have. We discuss the feasibility options of constructing your ADU and walk you through each design stage, enabling you to bring your vision to life.
Design 02

Design

Once we have established your property specifics and requirements, our team of designers and architects will meet with you to propose ideas and design your accessory dwelling unit. Our accomplished interior designers will provide a few options to make the most of the space. When you are happy with all the design aspects, one of our project developers will meet with you to provide an exact estimate and timeline for your ADU construction process.
Build 03

Build

We have a customer portal so that you can stay updated throughout the process. Once your city building permit is acquired, Valley Home Builders will start your project. Our customer portal allows you to stay updated throughout the construction process.
Free Consultation 01

Free Consultation

During a free consultation, our experts explore your ideas and develop a plan to bring your inspiration to life. We provide recommendations to suit your preferences and answer any questions you have. We discuss the feasibility options of constructing your ADU and walk you through each design stage, enabling you to bring your vision to life.

Design 02

Design

Once we have established your property specifics and requirements, our team of designers and architects will meet with you to propose ideas and design your accessory dwelling unit. Our accomplished interior designers will provide a few options to make the most of the space. When you are happy with all the design aspects, one of our project developers will meet with you to provide an exact estimate and timeline for your ADU construction process.

Build 03

Build

We have a customer portal so that you can stay updated throughout the process. Once your city building permit is acquired, Valley Home Builders will start your project. Our customer portal allows you to stay updated throughout the construction process.

Discover the Possibilities Through Completed ADU Projects

When you add an accessory dwelling unit to your property, you open up a world of possibilities. Our process blends fast permit approval with quality materials and customizable design options, so you can finally get the home you need without breaking the bank. Use our renovation samples to unleash your creativity and find a way to:

  • Expand your living space and create room for guests or family members.
  • Add a home office or studio for your hobby or passion.
  • Create a rental unit and enjoy an additional income stream.
  • Host events in style.
  • Turn your house into a dream home.
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Why Choose Valley Home Builders?

Since 2005, Valley Home Builders has served homeowners in and around Silicon Valley’s Bay Area. You can check our list of locations to find the area we serve nearest to you. Here are some benefits of working with us:

Our company has a five-star rating from the Home Services Review and an A+ rating with the Better Business Bureau (BBB).

Frequently Asked Questions

An ADU (Accessory Dwelling Unit) is an independent dwelling unit also called a secondary suite, accessory apartment, mother-in-law apartment or granny flat. It’s also called an anchored tiny home and is located on the same lot as your main home and can be attached or detached. The main benefits include increased property value, flexible living arrangements for family members or guests, private dedicated space for a home office or studio, and the ability to accommodate guests or aging relatives without moving. It’s a cost-effective way to expand your living space without purchasing new land.

The most popular ADU projects we build include backyard cottages (perfect for home offices, studios or guest spaces), guest houses (ideal for overnight guests or aging relatives), and garage conversions (an affordable option since the foundation and basic infrastructure already exist). Each type offers different benefits depending on your property layout and lifestyle needs. During your free consultation, we can discuss which option works best for your situation.

The timeline varies based on your project’s scope and complexity. Our process starts with a free consultation where we explore your ideas and understand your property specifics. Next, our design team proposes ideas and creates your ADU design with options to maximize the space. Once you approve the design, one of our project developers provides an exact estimate and timeline for construction. Throughout the entire process, you’ll have access to our customer portal to track progress, view photos and videos, and communicate with your project manager.

Yes, we handle all the planning and task-related details from start to finish. As part of our comprehensive ADU services, we navigate the local zoning laws and ensure your project complies with all regulations. Our team of designers, architects and project managers will manage every aspect of your ADU build so you don’t have to worry about the technical details.

Valley Home Builders has been serving the San Francisco Bay Area since 2005 with award-winning expertise. We have a five-star rating from Home Services Review, an A+ rating with the Better Business Bureau (BBB), and we’re NARI members who follow ethical industry codes. We’ve been recognized by Home Builder Digest as one of the 10 Best ADU Builders and have earned an Angie’s List Super Service Award. Plus, we offer a one-year labor guarantee on all our work, ensuring quality and peace of mind.