Living in Mill Valley has always attracted Marin home buyers. Unique homes and easy proximity to San Francisco have kept real estate values high. Family friendly Mill Valley is all about schools, sports, and its Sierra Club calendar setting. Nestled at the foot of Mt Tam, Mill Valley homes range from 500-square foot hunter’s cabins to multi-million dollar mansions tucked away on winding narrow lanes under the redwoods. Sometimes right next to each other.