ADU Builders Portfolio
California homeowners now have the option to add an Additional Dwelling Unit (ADU), also known as a Granny Flat or In-Law suite to their property.
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ADU Information Process
Homeowners are able to build a smaller, oftentimes independent residential dwelling unit (ADU) located on the same property as their original home. These can come in the form of a granny flat, converted garage, an attached ADU, or even basement conversions. These additions give homeowners the potential to increase their property value, keep family members and loved ones close by, or even create an additional monthly income stream by renting out the space. Additional dwelling units are quickly growing in popularity across California. With the ever-growing need for housing as well as the desire to keep our loved ones close, ADUs provide all the stability and security of the home.
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Success in any affordable new construction project comes down to how well the process is designed, communicated, and managed. This is how we take your ideas and turn them into reality.
Cost Effective
We offer highly competitive pricing and a strong commitment to quality craftsmanship with designs that last.
Safety First
We take safety seriously and comply with the strict standards, rules, and regulations governed under the Occupational Safety and Health Administration (OSHA)
Qualified Team
Our President and Regional Managers collectively have over 90 years of experience meeting the construction needs across San Diego.
ADU Construction Examples
West Coast Building and Design pride itself on our unwavering dedication to providing top-notch quality constructions, highly skilled and talented builders, and of course excellent value to our much-appreciated clients. If you decide to build with us here at West Coast Building and Design, you will have the guarantee of a quality and affordable ADU for all your living or renting needs. Recent changes in California state laws now allow us to build the additional dwelling units that homeowners have long been dreaming of.
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Here are some examples of the quality builds we have done in San Diego County for our valued clients.
Rene built our two story ADU with rooftop. I would recommend Rene for your project. He was on top of it, direct, communicated quickly, got it done at the price he quoted which was a great value.

I recommend West Coast Building and Design. We selected West Coast Building and Design to demolish an existing detached garage and build a custom, Spanish style, 2-story structure with a garage on the first floor and ~1,000 sq foot grandparent’s suite on the second story. It was a complicated build and we are incredibly happy with the results. Not only are we happy with the results, Rene stayed on budget and was great at communicating, reasonable and helped guide us through the process. He performed the services requested with quality work and provided great value.

Great contractor to work with! Rene built a terrific house for me. It sold in less than 24 hours for 50k above asking price. He is not just a skilled builder but a really nice guy. He also contracts for a fixed price which includes an in house architect and interior decorator

Ever since I bought my home 11 years ago, with its big sloping backyard, I knew I’d want to develop the unused space someday. I contacted West Coast Building and Design, and we brainstormed together. One year later, we have transformed the space into a beautifully manicured one-bedroom ADU that looks like it should be in a Pottery Barn advertisement. With vaulted ceilings, polished bathroom tile, and sleek matching cabinets and countertops in the kitchen and bath, I almost want to move in to the space myself and rent out my main home instead.
Of course with any project of this magnitude, there were hiccups and challenges. Trenching in the utilities was one of several major hurdles. But Rene and his team were always responsive, solution-oriented, and willing to soldier on. I made various changes to the design plans along the way, but these were always accommodated. Special shoutouts to Kevin, Rigo & AJ, as well! You guys went above and beyond, and I’m forever grateful to all of you. I think the before and after photos speak for themselves!

Looking for an Affordable ADU Builder or home contractors to build your custom homes or additions in San Diego?
Contact Rene Rivera at West Coast Building and Design today to schedule an appointment.