Marin County Unincorporated, California · General provision
22.32.120
Dimensional standards
Extracted standards
5 individual requirements pulled out of this section’s prose, each with the sentence it came from.
Other
- Maximum floor area for Category 1 ADUAccessory dwelling unit (ADU)A second, smaller home on a lot that already has one — a garage flat, basement flat or backyard cottage.800 sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.
The Accessory Dwelling Unit does not exceed a floor area of 800 square feet
- Maximum floor area for attached Category 2 ADUAccessory dwelling unit (ADU)A second, smaller home on a lot that already has one — a garage flat, basement flat or backyard cottage. (percentage of existing residence)50 pct
An attached Accessory Dwelling Unit contained entirely within an addition to an existing single family residence... shall not exceed 50 percent of the floor area of the existing residence
- Maximum floor area for detached Category 2 ADUAccessory dwelling unit (ADU)A second, smaller home on a lot that already has one — a garage flat, basement flat or backyard cottage.1,200 sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.
A detached Accessory Dwelling Unit shall not exceed a floor area of 1,200 square feet
- Maximum heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first. for attached Category 1 ADUAccessory dwelling unit (ADU)A second, smaller home on a lot that already has one — a garage flat, basement flat or backyard cottage.25 ft
An attached Accessory Dwelling Unit shall not exceed the maximum height allowed in the respective zoning district or 25 feet above grade, whichever is greater.
- Maximum heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first. for detached Category 1 ADUAccessory dwelling unit (ADU)A second, smaller home on a lot that already has one — a garage flat, basement flat or backyard cottage.18 ft
A detached Accessory Dwelling Unit shall not exceed a height of 18 feet above grade
From the ordinance
There are two categories of Accessory Dwelling Units, both with different criteria that apply as indicated below.