The operative definition is the local one. Codes routinely subdivide a category into tiers — “day care 2, family”, “group home 2” — and attach different permissions to each, so only Portola Valley’s own text settles what this covers.
2024; Ord. 2024-450 § 1 (Att. A), 2024) ## 18.04.140 - Dwelling, single-family. " Single-family dwelling " means a building designed or used exclusively as a single dwelling unit together with related accessory uses. (Ord. 1979-166 § 1
Read it in the chapter →M-R district shall be as follows: A. Uses permitted by Section 18.36.010; B. Single-family dwellings , including residential care facilities for six or fewer persons, supportive housing, and transitional housing; C. Temporary uses permitted by Section 18.36.030.
Read it in the chapter →M-U district shall be as follows: A. Uses permitted by Section 18.36.010; B. Single-family dwellings ; C. Duplexes; D. Emergency shelters; E. Multi-family dwelling; F. Residential care facilities; G. Supportive housing; H. Transitional housing; I. Low barrier
Read it in the chapter →area of any residential planned unit development; areas designated exclusively for occupancy by single-family dwellings , uses accessory thereto, and local roads serving such areas; easements for paths and trails; open space preserves; and areas reserved for
Read it in the chapter →this section: 1. Multiple detached single-unit dwellings on the same lot; 2. A single family dwelling containing a JADU or an interior ADU; 3. A single family dwelling with (i) a JADU or an interior ADU and
Read it in the chapter →