
About

Transform Your Property with a Custom ADU
BELZ excels in crafting custom accessory dwelling units (ADUs), such as in-law suites, backyard cottages, secondary units, and granny flats. As a experienced-owned company, we bring unmatched precision, professionalism, and a personalized touch to every project, ensuring your ADU seamlessly integrates with your home and enhances your way of living.
Request More InformationVersatility

Diverse Applications for Your Custom ADU
- Earn passive income with a rental property.
- Host guests in a beautifully designed guesthouse.
- Set up a functional and inspiring home office.
- Build a private retreat or hobby space.
- Provide an independent yet connected living arrangement for family members.
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Enhance Your Home’s Value and Functionality
Partnering with BELZ for your ADU investment enhances both your property’s value and your lifestyle. Whether you need a private home office, a peaceful yoga studio, or extra guest accommodations, our custom-built accessory dwelling units provide versatile solutions tailored to your needs.
Embrace Multigenerational Living
As multigenerational living becomes more common, ADUs offer the perfect blend of privacy and connection. Our team specializes in designing comfortable, functional spaces that support family members while maintaining independence.
ADA-Compliant and Universal Design
At BELZ, accessibility is a priority. We create ADA-compliant ADUs that incorporate universal design principles, ensuring a safe, welcoming, and adaptable living space for people of all ages and abilities.
Streamlined ADU Construction Process
Our seamless approach makes your ADU project hassle-free from concept to completion. With efficient planning and expert execution, we streamline the entire process, delivering high-quality results on time and within budget.
Guideline
Sacramento County ADU Guidelines
At BELZ, we stay up to date with the latest California ADU regulations to ensure a seamless building experience for you. In accordance with Sacramento's guidelines, here are the essential details you should know about ADU construction and the application process in the area:
- The City of Sacramento requires planning approval or approval for concurrent review before submitting a building permit application. This process is designed to streamline ADU projects and ensure efficiency.
- In Sacramento, homeowners can build up to two ADUs per lot, either attached or detached, as long as there is an existing or proposed primary residence. Detached ADUs cannot exceed 1,200 ft² in total area.
- Detached ADUs are permitted to be as large as 1,200 ft².
- Attached ADUs are limited to 50% of the primary residence’s size or 850 ft², whichever is greater. For two or more bedrooms, the maximum size increases to 1,000 ft².
- All ADUs must comply with the California Building Code, including requirements for electrical, plumbing, mechanical, and energy systems.
- ADU plans can be submitted electronically, making the review process more convenient.
- Impact fees are waived for ADUs smaller than 750 ft².
- Impact fees apply to ADUs that are 750 ft² or larger.
- Certain conditions may exempt ADUs from fire sprinkler requirements, such as when the main residence is not sprinklered and the ADU falls within specific size limits.
- The City’s Department of Utilities generally requires one water service connection per lot, which also applies to ADUs.
- Depending on the California Energy Code, your ADU may need to include photovoltaic (PV) panels. It is advised to consult with an energy professional and SMUD for detailed requirements.
- The Building Division can provide a detailed fee estimate, considering the size of your ADU (under or over 750 ft²).
- ADUs are subject to school district impact fees. For detailed information, contact your local school district.
Worried about your ADU matching your existing home? Our design team specializes in crafting ADUs that complement your main house’s architectural style, making it a seamless addition to your property. From exterior finishes to interior design, we focus on creating a space that is both practical and visually appealing.
FAQ
What is an ADU?
An ADU (accessory dwelling unit) is a secondary living space located on a single residential lot, offering fully independent living facilities for individuals or families.
How Big Can My ADU Be?
In Sacramento and nearby areas, ADUs can be as large as 1,200 square feet, subject to your lot size and local zoning guidelines.
Can I Rent Out My ADU?
Yes, ADUs can generate rental income, though specific regulations may vary based on your location.
How Long Does Construction Take?
The typical timeline for an ADU project, from design to completion, is around 3 months, depending on the project's complexity and size.
Benefits

Why Choose BELZ for Your ADU Project?
- Experienced-owned company dedicated to delivering excellence.
- Customized design and construction solutions.
- Smooth, hassle-free experience from start to finish.
- Specialized in ADA-compliant and universal design.
- Fully compliant with California ADU regulations and standards.
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Ready to Expand Your Living Space?
Allow BELZ, the leading ADU builders in Sacramento, to elevate your property with a custom-designed ADU. Reach out today to begin creating the perfect living space, boosting your property value, and ensuring your home meets both your current and future needs.
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