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Earlier editions: 2026-07

Title LIP — Local Implementation Plan›Chapter 15 — REQUIREMENTS FOR LAND DIVISIONS

Malibu Municipal Code § 15.6 Slope/Density Criteria

Malibu Municipal Code · 2026-10 edition · updated 2026-10-04 · Malibu

Cite as: Malibu Municipal Code § 15.6 · Text as of 2026-10-04

15.6.1 Applicability.

The following zoning districts shall be subject to the slope/density criteria provisions of this section. Each zoning district indicates the minimum lot size requirement. However, this minimum lot size requirement is subject to change pursuant to Section 15.6.3 of the Malibu LIP, as it relates to the topography of the subject site. Following is a list of the zoning districts and their "base" lot size requirements.

Minimum Lot Size Requirements:

RR-40: 40 acres per lot

RR-20: 20 acres per lot

RR-10: 10 acres per lot

RR-5: 5 acres per lot

RR-2: 2 acres per lot

RR-1: 1 acre per lot)

15.6.2 Formula for Determining the Average Slope.

To determine the applicable slope/density factor, the average slope of the subject parcel shall be determined by a registered engineer based on the following formula:

S = IL x 100
S = A
S = Average percent slope
I = Contour line elevation interval in feet
L = Sum of the length of all contour lines across the parcel
A = Net area of parcel in square feet

A. Measurements shall be made at contour intervals not to exceed 10N on a horizontal map scale where 1″ equals 200N or less.

B. When more than one zoning designation exists on a parcel which is proposed to be subdivided, the density limit for the entire property shall be determined by calculating the allowable number of units within each separately zoned area (fractional numbers shall be rounded down to the nearest whole number) and taking the sum total of these densities.

15.6.3 Slope Density Factor.

Based on the average percent slope for the property, the following table shall determine the slope/density factor for the subject property.

Average Percent Slope Slope/Density Factor
0 - 10 1.0
10.1 - 15 1.1
15.1 - 20 1.3
20.1 - 25 1.5
25.1 - 33 1.7
33. - over 1.95

To determine the adjusted, or actual minimum lot size for a parcel, this slope/density factor shall be multiplied by the "base" minimum lot size requirement specified for that zoning district in which the subject parcel is located. The resulting figure is the actual minimum lot size requirement which must be met for any proposed subdivision of the subject parcel of land.

(Ord. 393 § 4, 2015; Ord. 303 § 3, 2007)

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