Make your property more functional
Professional ADU Builders in San Marcos, CA
Building spaces with purpose and style.
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Your project is in skilled hands
At Hyperion Home Remodel & Contracting, we deliver cutting-edge ADU construction services across San Marcos, Encinitas, Carlsbad, Rancho Bernardo, Vista, and the surrounding areas. Trust our ADU construction company to craft a beautiful, comfortable, and practical space, perfect for family, guests, or tenants. From compact studios to spacious guest houses, we handle each project with care and dedication. You can expect thoughtful design, quality construction, and unwavering commitment to quality.
Quality ADU construction service designed around you
Our team works closely with you, prioritizing your unique needs and preferences at every stage of your project.
We understand that ADU construction is a significant investment, which is why we blend quality craftsmanship with modern, personalized design. We’ll help you select energy-efficient materials, customize floor plans, and incorporate smart home technology, all while ensuring compliance with local zoning regulations.
Whether you’re building for extra living space, rental income, or a better hosting experience, our accessory dwelling unit builders will keep the project smooth and in line with your requirements.
What makes us a trusted partner

Creative designs
By blending innovation and timeless quality, our dedicated designers craft unique, personalized environments that reflect your style while enhancing comfort and usability.

Focused on community
We proudly support local non-profit organizations by donating part of our profit, and contribute to the communities across San Marcos, Fallbrook, Temecula, Bonsal, Menifee, and beyond.

Quality you can trust
As the area’s leading ADU contractors, we deliver projects that are always completed on time, cost-effective, and fully aligned with industry best practices.
Let’s bring your vision to life.
Our team
Professionals you can depend on
Our team is made up of highly qualified, insured, and licensed accessory dwelling unit builders. With years of hands-on experience and expertise in the latest construction techniques, they approach every project with precision and care, adhering to the latest standards in the industry to make your project run smoothly from start to finish.
Our crew will work efficiently, stay on schedule, and deliver meticulous ADU construction services anywhere in San Marcos, Hemet, Wildomar, Murrieta, Lake Elsinore, or the vicinity, leaving you with a space you’ll be proud to call your own.

Start designing with us today!
Frequently Asked Questions
What is an ADU and how does it work?
It’s a self-contained living space built on the same property as a primary home. It normally includes a kitchen, bathroom, and sleeping area. They can serve as rental units, guest houses, or living spaces for family members. You can rely on our experienced accessory dwelling unit builders in San Marcos, Rancho Bernardo, Carlsbad, Temecula and the area to help you build a tailored unit that meets your needs.
How long does it take to build an ADU?
It usually takes about six to twelve months from start to finish. The timeline depends on factors such as the complexity of design, permitting, and site conditions. While simple builds can finish sooner, custom designs or challenging locations can extend the process. With reliable ADU contractors in Fallbrook, Lake Elsinore, Hemet, and the area, good planning, and clear communication, you can keep your project within the planned timeline.
What are the zoning requirements for an ADU?
The requirements vary by location but generally cover factors like maximum square footage, building height, and distance from property lines. Many areas also require the ADU to match the main home’s design style and meet parking or utility access rules. Some jurisdictions limit the number of occupants or require the property owner to live on-site.
Because these rules differ widely between cities and counties, it’s best to hire one of the local ADU construction companies in San Marcos, Wildomar, Murrieta, Encinitas, or wherever you are. This will ensure your unit is fully compliant from the start.
What is the maximum size for an ADU in California?
It varies by type, but at the state level, detached units can be up to 1,200 square feet, attached ones can be up to 50% of the main home’s area (not exceeding 1,200 square feet), and junior units are limited to 500 square feet. However, local rules for ADU construction can be more restrictive, so always check with your local planning department in Vista, Menifee, Bonsal, or another city.
Who are the leading ADU contractors near me in San Marcos, CA & the vicinity?
Hyperion Home Remodel & Contacting is your trusted ally when it’s time to improve your home. No matter the size or complexity of your project, we’re here to listen to your needs and craft smart and stunning solutions you’ll love. Our crew specializes in a range of services, so contact us for:
- Detailed home remodeling,
- Expert home addition services,
- Meticulous kitchen renovation,
- Comprehensive bathroom remodeling, and more.
Whether you need us in Lake San Marcos or elsewhere in the area, give us a call today and discover why we’re the best at what we do!