Martinez

California

[ Last updated on September 24, 2021 ]

Martinez has updated its ADU ordinance to comply with new state laws. Below are the up-to-date requirements to build an ADU in the city.

Zoning

All properties zoned for single family, two-family or multifamily may be eligible to build ADUs.

Number of units

The number of ADUs you’re able to build depends on how your lot is zoned:

  • Lots zoned for single family use may add 1 ADU and 1 Jr. ADU (JADU).
  • Lots zoned for two-family or multi-family may add up to 2 detached ADUs per lot or up to 25% of the existing units in the building if conversions of existing non-living space.

Building size

The maximum ADU you can build depends on the ADU type:

  • The maximum size is 500 sq. ft. for a JADU
  • 850 sq. ft. for a one bedroom detached ADU
  • 1,000 sq. ft. for a 2 bedroom detached ADU
  • Attached ADUs may not exceed 50% of the primary dwelling floor area.

Building height

Detached and Attached ADUs can reach a maximum height of 16 feet.

Setbacks

Minimum setbacks of 4 feet from the side and rear lot lines.

Parking

One parking spot required unless any of the following true:

  • The accessory dwelling unit is located within one-half mile walking distance of public transit.
  • The accessory dwelling unit is located within an architecturally and historically significant historic district.
  • The accessory dwelling unit is part of the proposed or existing primary residence or an accessory structure.
  • When on-street parking permits are required but not offered to the occupant of the accessory dwelling unit.
  • When there is a car share vehicle located within one block of the accessory dwelling unit.

Owner-occupancy

Owner occupancy is not a requirement for permitting an ADU from January 1, 2020 until January 1, 2025. This is a great opportunity for rental property owners to increase their yields in a cost-effective way.

Rental

While long-term rentals are permitted for ADUs, short-term rentals (e.g. Airbnb for less than 30 days) are not permitted in the city.

Watch-outs

Are you in a creek protection area? Do you have a utility easement over your property? Reach out to us and we’ll help you build a custom ADU to fit your unique property characteristics and local regulations!

Get your free consultation and estimate today!