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As a homeowner, one of the most transformative ways you can customize your home is by creating an Accessory Dwelling Unit (ADU). An ADU can give you the space for a private reading nook, a hobby room, or even an entire guest home for your parents to live on the property. At Platinum Home Builders & Design Inc., we bring years of experience crafting high-quality ADUs across Orange County, helping homeowners turn unused space into functional, beautiful extensions of their homes.
An ADU — sometimes called a granny flat, casita, or secondary suite—is a separate building or living space on the same property as a primary home. These structures can stand alone or attach to the main house. You can also create them from existing spaces like garages or basements.
ADUs have become more and more popular with the rising population and housing market in Orange County. Instead of moving to an entirely new property — that comes with additional expenses that may be unattainable in current economic conditions — creating an ADU may actually save you money in comparison while simultaneously meeting your changing needs.
You can also customize your ADU to whatever your needs are. If your parents are aging and you want them to be close by, you can create an ADU with a separate kitchen that gives them their own space while still being close by. If you have a side business making pottery, you can create an ADU in your garage with plenty of space and outlets for a kiln and spinning wheel. At the end of the day, every ADU is unique, but the result is the same: a more flexible, valuable, and future-ready home.
There are several reasons why ADUs make a wise investment for Orange County homeowners, including:
In an area where space is at a premium, building an ADU in Orange County offers both freedom and financial flexibility.
No two homes—or homeowners—are the same, which is why we tailor every ADU to fit your property and goals. Our team will help you explore the design style and structure that suits your vision best. Here are some of our most popular choices in Orange County:
Each ADU we design blends seamlessly with your home’s aesthetic while meeting all Orange County building and zoning requirements.
At Platinum Home Builders & Design Inc., we take a personalized approach to every ADU project. From the first design sketch to the final inspection, we’ll create a space that reflects your lifestyle, complements your property, and meets your expectations for quality and longevity.
Here’s why homeowners across Orange County choose us:
When you partner with our team, you gain a builder who listens, plans carefully, and delivers exceptional craftsmanship—every time.
Building an ADU is a significant investment, but one that pays off in long-term value. That said, we know that this financial investment comes with strategic economic decisions in your household. To help homeowners move forward with confidence, we offer assistance in navigating financing options and budget planning. Our team will connect you with trusted lenders and provide a clear breakdown of what to expect before construction begins. With our help, building an ADU won’t be a stressful experience. Instead, you can rest assured knowing that you’re making a wise investment that won’t break the bank.
When you commit to Platinum Home Builders & Design Inc., you can expect a transparent and seamless process that includes the following steps:
From blueprint to final inspection, we’ll keep your project on time, on budget, and stress-free.
Timelines vary depending on design complexity and permit processing, but we complete most projects within four to seven months. We create detailed schedules to keep every phase of your project moving efficiently.
Yes. ADUs must meet both California state laws and local Orange County regulations. Our team handles the entire permitting and approval process to make sure your project stays compliant.
Costs depend on the type, size, and finish of your ADU. Garage conversions generally cost less than detached new builds. We’ll provide a detailed, transparent estimate after your initial consultation.
Yes. Many Orange County homeowners rent out their ADUs as long-term leases or short-term rentals, depending on city ordinances. Our team can help you design a unit that meets rental standards.
Under California law, ADUs can be up to 1,200 square feet, though local zoning and lot size will determine the maximum allowable area. We’ll help you make the most of your space while staying within code.
Absolutely. ADUs are among the most sought-after home upgrades in Orange County, providing both extra living space and substantial resale value.