Land use · Portola Valley, California

accessory dwelling unit

Named in 1 of this ordinance’s zoning districts.

How this ordinance defines it

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.

one existing primary residential dwelling unit, one new primary residential dwelling unit, one accessory dwelling unit , and one junior accessory dwelling unit, for four units in total. (2) On a lot that is not split pursuant to

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the main building, structure, or use on the same lot. This term excludes accessory dwelling units (see Section 18.04.151, Dwelling unit, accessory). (Ord. 2024-451 § 1 (Att. A), 2024; Ord. 2024-450 § 1 (Att. A), 2024; Ord.

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ac. | 11 | | 1.8 ac. or more | 12 | **B. Accessory Dwelling Units and Junior Accessory Dwelling Units.** 1. **Purpose.** The purpose of this section is to define accessory dwelling units (ADUs) and Junior

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limit that applies to the property. This provision shall not be applied to accessory dwelling unit maximums as described in subsections (i.) and (ii.) of Section 18.36.040.A.4.b. (Ord. 2019-431, § 2, 2019; Ord. 1998-312 § 4, 1998:

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amount of 1 space for every 3 units or fraction thereof. | | Accessory dwelling units | See Section 18.36.040.B, Accessory Dwelling Units and Junior Accessory Dwelling Units | | SB 9 units | See Section 18.27.060,

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Where it is allowed here

Accessory1

Allowed as a secondary activity to the main use.