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Earlier editions: 2026-09

Title 9 — CONSTRUCTION CODES AND FIRE CODE›Chapter 11 — MTM

San Diego County Municipal Code § 11.3 Land Use Designations, Zoning, and Development Regulations

San Diego County Municipal Code · 2026-10 edition · updated 2026-10-03 · San Diego County

Cite as: San Diego County Municipal Code § 11.3 · Text as of 2026-10-03

11.3.1 Existing Uses

MTM occupies approximately 3.98 acres within the Master Plan. This includes the historic Campo Feldspar Mill and four buildings within the central portion of the project area. MTM also preserves, restores, and displays antique trucks, equipment, and artifacts that have influenced the motor transport industry. The four existing structures are each 7,590 sf. The site also includes a baseball field. Currently, the MTM has approximately 100 visitors per month.

Exceptions & meaning →

11.3.2 Planned Uses

The MTM Planning Area consists of four (4) existing buildings that are proposed to be adaptively reused to house museum space, a community event space, and meeting space for civic clubs, social clubs, and scouting organizations.

Figure 15 classifies the constraints related to the MTM Planning Area into the following five categories: no impacts, potential issues that require additional analysis, potential issues that involve higher level of analysis/difficulty, potential significant impacts, and significant impacts – no build possible. Constraints were generated from a variety of Camp Lockett Master Plan and Rezone sources including available GIS files, field-verification, and surveys. Constraints such as cultural resources, archaeological resources, biological resources, vegetation, steep slopes, 100-year floodplain, and liquefaction were evaluated. Once constraints were identified, Figure 16 was developed to depict the zones governing the site.

The MTM Planning Area is divided into the following subarea:

Table 17: MTM Subarea

No. Planning Area Description Allowed Uses*
1 Exhibits Adaptive reuse of existing buildings Community Recreation, Cultural Exhibits and Library Services, and Civic Fraternal or Religious Assembly

* Some uses are subject to further review.

The following table identifies the planned uses/amenities proposed by MTM and how they fit within the County’s existing use types.

Table 18: MTM Proposed Uses

Description on Map Zoning Ordinance Use Type Zoning Ordinance Use Type Description
Civic Use Types: Civic Use Types: Civic Use Types:
Proposed Reuse MTM Museum Space Cultural Exhibits and Library Services Refers to non-profit, museum-like preservation, exhibition of objects of permanent interest in one or more of the arts and sciences, gallery exhibition of works of art or library collection of books, manuscripts, etc., for study and reading.

Miscellaneous:

Parking Accessory Use
Realignment of Fence Accessory Use

FIGURE 15 MTM CONSTRAINTS

[Figure]

FIGURE 16 MTM ZONES

[Figure]

Exceptions & meaning →

11.3.1 Proposed Zoning

The following “Zoning Box” shall apply to the planned uses within the MTM Planning Area. Please refer to Section 4000 to 4920 of the Zoning Ordinance for specific details regarding the development regulations.

Table 19: MTM Zone Box

Table 19: MTM Zone Box

USE REGULATIONS USE REGULATIONS Camp Lockett 4 (CL-4)
DEVELOPMENT REGULATIONS Density: -
DEVELOPMENT REGULATIONS Minimum Lot Size -
DEVELOPMENT REGULATIONS Building Type L (allows all building types)
DEVELOPMENT REGULATIONS Maximum Floor Area Ratio -
DEVELOPMENT REGULATIONS Floor Area Ratio -
DEVELOPMENT REGULATIONS Height G (35’)
DEVELOPMENT REGULATIONS Lot Coverage -
DEVELOPMENT REGULATIONS Setback V
DEVELOPMENT REGULATIONS Open Space -
SPECIAL AREA REGULATIONS SPECIAL AREA REGULATIONS H (Historic)
Exceptions & meaning →

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