Fremont ADU Standards Guide | Build with LiveLarge Home

Fremont ADU Standards: LiveLarge Home Guide

Since Fremont implemented its ADU program, there has been a notable increase in the development of Accessory Dwelling Units (ADUs). If you’re planning to build an ADU in Fremont, LiveLarge Home can help you navigate the essential development standards to ensure a successful project.

Planning to build an ADU in Fremont? Let LiveLarge Home guide you through the key development standards for a smooth and efficient process.

Zoning and Lot Size:

ADUs are permitted only on properties with a single-family home and are not allowed on constrained lands or in multi-residential buildings.

Size and Floor Area:

Standard ADUs (SADUs):
- Minimum Size: 150 sq. ft.
- Maximum Size: Based on the lot size or 50% of the primary dwelling’s floor area, whichever is smaller.
Junior ADUs (JADUs):
- Maximum Size: Under 500 sq. ft.
- JADUs are created within the existing space of the primary home and must use an existing bedroom.

Setbacks and Height:

SADUs:
- Minimum four-foot setback from side and rear lot lines is required for any ADU that involves new floor space.
JADUs:
- Created within the existing walls of the primary home, so no additional setbacks are required.

Design and Layout:

SADUs:
- Must match the materials and colors of the primary residence.
- Exterior stairs are not allowed on the front of the property.
JADUs:
- Exterior entrance is required, separate from the main home, with an interior connection to the primary residence.
- A private bathroom is not required if there is access to one in the main house.

Location and Parking:

SADUs:
- One parking space is required unless exemptions apply (e.g., proximity to transit).
- Parking configurations like garage conversions are allowed if they meet the city’s parking standards.
JADUs:
- No additional parking is required for JADUs, as long as the property is within proximity to transit or meets certain conditions.

Building Safety:

SADUs and JADUs:
- Smoke alarms, carbon monoxide detectors, and a permanent foundation are required for both types of ADUs.
- Private sewage systems need county health approval.

Additional Considerations:

Garage Conversions:
- Permitted if they meet parking standards and the setback requirements when constructed above a garage.
Occupancy:
- Property owners must live on-site. ADUs cannot be rented for less than 30 days and must have a deed restriction against separate sales.

For detailed information, visit the Fremont Planning Division at (510) 494-4455 or email planning@fremont.gov.

Let LiveLarge Home Help You Build Your ADU

LiveLarge Home is an expert in both design and local regulations, ensuring a smooth process for your ADU project. Whether you envision a cozy rental or a guest suite, our team will help transform your property with a well-planned ADU. Our expertise in design, combined with pre-approved plans and prefab construction, ensures your ADU meets local standards while optimizing your space. Contact us today to enhance your property’s value and functionality with a thoughtfully planned ADU!

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