Nicasio Holdings, LLC Design Review (P6480)

The applicant requests Design Review approval to authorize the construction of a new 329-square-foot residential addition to an existing single-family residence and a new 320-square-foot accessory structure attached to said residence, located on a 38-acre (1,658,764-square-foot) lot in the unincorporated community of Nicasio. The new residential addition and attached accessory structure would be located along the north elevation of the existing residence, with the addition situated directly above the accessory structure and both improvements occupying the same building footprint. The residential addition would reach a maximum height of approximately 21 feet, 10 inches above grade, while the accessory structure would reach a maximum height of approximately 9 feet, 6 inches above grade. Due to their shared building footprint, both components would maintain minimum setbacks of 539 feet, 1 inch from the western front property line; 110 feet, 7 inches from the northern side property line; 632 feet, 1 inch from the southern side property line; and 627 feet, 6 inches from the eastern rear property line.

The proposed development would also entail modifications to the existing residential structure and associated site work, including the selective removal of exterior walls, modifications to existing fenestration, removal of an exterior stairway at grade, and approximately 2 cubic yards of excavation, all of which would be hauled off-site.

Design Review approval is required pursuant to Marin County Code Section 22.42.020 (Planned Zoning Districts) because the project entails the construction of a multi-story addition to an existing residential structure that does not meet the criteria for exemption from Design Review requirements set forth in Marin County Code Section 22.42.025, Table 4-3.

Zoning: (Agriculture, Residential Planned, with a residential density of 40 acres per unit)
Countywide Plan Designation: AG1 (Agriculture Land Use Designation with a residential density of 1 unit per 30 to 60 acres)
Community Plan (if applicable): Nicasio Valley Community Plan (1979)