The applicant requests Design Review approval to construct a new 3,154 square foot single family dwelling with an attached garage on a vacant lot in Mill Valley. The 3,154 square feet of proposed building area – of which 2,674 square feet would be considered floor area – would result in a floor area ratio of 28 percent on the 9,647 square foot lot. The proposed building would reach a maximum height of 29 feet, 9 1/2 inches above surrounding grade and the exterior walls would have the following setbacks: 8 feet, 6 inches from the southern front property line; 5 feet, 1 inch from the western side property line; 5 feet, 1 inch from the eastern side property line; over 90 feet from the northern rear property line. Various site improvements would also be entailed in the proposed development, including a new driveway, new retaining walls, and new fencing.
Design Review approval is required pursuant to Marin County Code Section 22.42.020.D because the project is proposed on a vacant lot that is at least 50 percent smaller in total area than required for new lots under the slope regulations, in compliance with Section 22.82.050.
Zoning: R1-B1 (Residential Single-Family, minimum lot size 6,000 square feet)
Countywide Plan Designation: SF6 (Low Density Residential)
Community Plan: Tamalpais