Menlo Park ADU Standards
Prefab ADU in Menlo Park
What is an ADU (Accessory Dwelling Unit)?
An Accessory Dwelling Unit (ADU) is an independent residential unit located on the same lot as a primary home. ADUs provide additional living space, rental opportunities, or multi-generational housing. A Prefab ADU is a permanent, factory-built backyard home that meets local zoning and building codes, making it ideal for long-term living.
Tiny homes, often confused with prefab ADUs, are small, mobile units built on wheels. While both can be considered ADUs, prefab ADUs are stationary and built to last, whereas tiny homes face more zoning challenges due to their mobility.
Planning to Build an ADU in Menlo Park?
With the implementation of ADU regulations, Menlo Park has seen a rise in accessory dwelling unit construction. If you’re planning to build an ADU in Menlo Park, LiveLarge is here to guide you through key development requirements for a smooth and successful project.
Types of ADUs
- Detached ADU: A newly constructed unit that is separate from the primary structure.
- Attached ADU: A newly constructed unit that is attached to the primary residence.
- Conversion ADU: A unit created by converting existing space within a primary residence or a detached accessory structure.
- Junior Accessory Dwelling Unit (JADU): A conversion of existing space, up to 500 square feet, entirely within a single-family residence.
Zoning and Lot Size
- Detached ADUs (up to 1,000 square feet with a maximum of two bedrooms) are permitted in all zoning districts that allow single-family, multifamily, or mixed-use residential properties.
- JADUs are permitted in all single-family districts.
Size and Floor Area
- Attached ADU:
- 0-1 Bedroom: Maximum area of 850 sq. ft.
- 2 Bedrooms: Maximum area of 1,000 sq. ft.
- Cannot exceed 50% of the primary residence’s floor area.
- Detached ADU:
- 0-1 Bedroom: Maximum area of 850 sq. ft.
- 2 Bedrooms: Maximum area of 1,000 sq. ft.
- Junior ADU (JADU):
- Maximum area of 500 sq. ft.
Setbacks and Height
Attached ADU:
- Setbacks: 4 feet (side/rear)
- Height: Must match the primary dwelling’s height limit and comply with daylight plane rules
Detached ADU:
- Setbacks:
- 4 feet (side)
- 4 feet (rear) if under 800 sq. ft., 10 feet if over 800 sq. ft.
- 5 feet from the primary residence
- Front setback per zoning rules
- Height: Up to 17 feet
Conversion ADU:
- No setbacks required if converting existing space, including garages or accessory structures
Junior ADU (JADU):
- Setbacks: 4 feet (side/rear)
Parking Requirements
- ADU: Requires one off-street parking space (covered or uncovered) in the front, side, or rear setback.
- No replacement parking needed for the primary home if:
- A garage is converted into an ADU.
- Existing off-street parking is removed for ADU construction in a single-family district.
- No ADU parking required if the unit is:
- Within ½ mile of public transit.
- In a historic district.
- An interior ADU.
- Ineligible for on-street parking permits (but permits are available nearby).
Within one block of a car-share vehicle.
For more details, contact the Menlo Park Planning Division at (650) 330-6703 or via email at mapruter@menlopark.gov.
Why Choose LiveLarge Prefab ADUs?
LiveLarge Prefab ADUs are designed to meet Menlo Park’s detached ADU regulations, offering a hassle-free way to maximize property value. With pre-approved designs and expert guidance, we ensure a smooth approval process.
Let LiveLarge be your trusted partner for your ADU journey in Menlo Park. With our expertise in design, construction, and pre-approved plans, we ensure your project aligns with local standards and maximizes your property’s potential. Contact us today to start your ADU project!
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