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Portola Valley City Zoning Code

CHAPTER 18

16 - M-R MOUNTAINOUS RESIDENTIAL DISTRICT REGULATIONS

18.16.010 - Intention—Applicable regulations.

The M-R district is intended to promote and encourage the establishment and maintenance of a rural environment of single-family residences at very low densities consistent with its comparative remoteness within the planning area and the preservation of the unspoiled nature of the mountainous terrain. Any parcel in an M-R district, as established in accordance with Section 18.06.020, may be occupied by a principal use listed in Section 18.16.020 or, when authorized by the planning commission, by a conditional use as specified in Section 18.16.030, together with uses accessory to such principal use or conditional use as listed in Section 18.16.040. Use of any parcel is subject to:

A.

Provisions governing accessory uses set forth in Chapter 18.42;

B.

Parcel area, open area, and bulk requirement set forth in Chapters 18.42 and 18.48 through 18.60;

C.

Off-street parking requirements set forth in Chapter 18.60;

D.

Provisions regulating nonconforming uses set forth in Chapter 18.46;

E.

Required conditions set forth in Section 18.12.050;

F.

Special building setback lines set forth in Chapter 18.58.

(Ord. 1979-166 § 22 (part), 1979; Ord. 1967-80 § 1 (6503), 1967)

18.16.020 - Principal uses permitted.

Principal uses permitted in the 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.

(Ord. 2022-448 § 5, 2022; Ord. 2011-390 § 6, 2011; Ord. 1979-166 § 22 (part), 1979: Ord. 1967-80 § 1 (6503.1), 1967)

18.16.030 - Conditional uses permitted.

A. Uses permitted by subsections A, B, C, D(2), D(6), E, F, G, I, J and L of Section 18.12.030.

B.

Publicly-owned recreation or open space areas when located in conformance with the general plan.

(Ord. 2011-390 § 6, 2011; Ord. 1987-224 § 2 (part), 1987; Ord. 1981-180 § 2, 1981; Ord. 1979-166 § 22 (part), 1979: Ord. 1967-80 § 1 (6503.2), 1967)

18.16.040 - Accessory uses permitted.

Accessory uses permitted in the M-R district shall be as follows:

A.

Accessory uses as permitted in Sections 18.36.040 and Chapter 18.40;

B.

Accessory uses as permitted by subsections B, C, D, E, G, H, I, J and K of Section 18.12.040.

(Ord. 1991-263 § 7, 1991; Ord. 1979-166 § 22 (part), 1979: Ord. 1967-80 § 1 (6503.3), 1967)

18.16.050 - Required conditions.

Required conditions in the MR district shall be as follows:

A.

Required conditions as set forth in subsections A, B and C of Section 18.12.050;

B.

Conformance with the requirements set forth in Section 18.37.010.

(Ord. 1994-279 § 2 (part), 1994; Ord. 1979-166 § 22 (part), 1979: Ord. 1967-80 § 2 (6503.4), 1967)