Marin County Unincorporated

This Development Code applies to all land uses, subdivisions, and development within unincorporated Marin County.

The A3 through A60 zoning districts identify areas suitable for commercial agricultural operations... The designation of an A zoning district shall include a numerical suffix on the zoning map, which shall indicate the minimum lot area for new subdivisions in acres.

The A2 zoning district identifies areas suitable for commercial agricultural operations... Please refer to Sections 22.08.040 and 22.14.050 to understand the minimum lot area for new subdivisions.

The ARP zoning district identifies agricultural areas suitable for residential development, with varied housing types designed without the confines of specific yard, height, or lot area requirements... The designation of an ARP zoning district shall include a numerical suffix on the zoning map, which shall indicate the maximum residential density in acres.

In A districts (A3 to A60) and in ARP districts, non-agricultural development shall be clustered to retain the maximum amount of land in agricultural production... clustered on no more than five percent of the gross acreage

A Use Permit is required: (1) if any agricultural products to be processed are not produced on the same site or on other agricultural properties located in Marin County that are owned or leased by the processing facility owner or operator; or (2) if the floor area used for processing activities exceed an aggregate of 5,000 square feet.

A Use Permit is required: (1) if any agricultural products to be sold are not produced on the same site, or on other agricultural properties located in Marin County that are owned or leased by the sales facility owner or operator; or (2) if the building(s), structure(s), or outdoor sales area used for the retail sales activities exceed an aggregate floor area of 500 square feet.

The RA zoning district is intended for areas where single-family residential development and small-scale agriculture can be accommodated with similar and related compatible uses.

The RR zoning district is intended for areas where single-family residential development, and noncommercial recreation can be accommodated with similar and related compatible uses.

The RE zoning district is intended for single-family residential areas where small-scale agriculture accessory to residential uses can be accommodated.

The R1 zoning district is intended for areas suitable for single-family residential neighborhood development in a suburban setting, along with similar and related compatible uses.

The RSP zoning district is intended for areas suitable for single-family residential neighborhood development in a suburban setting... where site or neighborhood characteristics require the attention to design detail provided through the Master Plan process.

The R2 zoning district is intended for two primary dwellings as well as single-family dwellings on an individual lot in suburban settings, along with similar and related compatible uses.

The RMP zoning district is intended for a full range of residential development types within the unincorporated urban areas of the County, including single-family, and multi-family residential development... The designation of the RMP zoning district shall include a numerical suffix on the zoning map, which shall indicate the maximum residential density in units per acre.

The RX zoning district is intended for areas of the County best suited for mobile homes within a mobile home park or mobile home subdivision with shared recreational and open space facilities... This zoning district shall be applied only if the Commission and Board find that the area is of sufficient size, type, location and has special features (e.g., access to public transportation and shopping facilities).

The RF zoning district is intended for near shore areas of San Francisco Bay and adjoining waterways suitable for the location of houseboats and other floating homes, where appropriate marina and other support services can be provided.

Provisions shall be made for adequate sewage disposal in compliance with Title 18 (Sewers) of the County Code, and as follows: ... Provisions shall be made for domestic water supply as may be necessary to protect public health, including water service to each lot and fire protection facilities.

Improvement securities shall be provided by the subdivider, as required by this Subsection.

At least two permanent monuments shall be set in each block. ... Stakes at all corners and angle points in the exterior boundary of the subdivision shall be not less substantial than three-fourths-inch iron pipe or one-half-inch rebar 18 inches long.

At least two permanent monuments shall be set in each block.