Title 9 — CONSTRUCTION CODES AND FIRE CODE›Division 8 — COUNTY ENERGY EFFICIENCY CODE›Chapter 11 — MTM
11.3 Land Use Designations, Zoning, and Development Regulations
San Diego County Municipal Code · 2026-09 edition · updated 2026-10-02 · San Diego County
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.
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*
Community Recreation, Cultural Exhibits and Library Services,
1 Exhibits Adaptive reuse of existing buildings 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:
Refers to non-profit, museum-like preservation, exhibition of objects of permanent interest in one or
Proposed Reuse MTM Museum Cultural Exhibits and Library Services more of the arts and sciences, gallery exhibition of works Space 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 16
MTM ZONES
11.3.1 Proposed Zoning¶
The following “Zoning Box” shall apply to the planned uses within the MTM Planning Area. Please refer to Section4000 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 Camp Lockett 4 (CL-4) Density: - Minimum Lot Size - Building Type L (allows all building types) Maximum Floor Area Ratio - DEVELOPMENT Floor Area Ratio - REGULATIONS Height G (35’) Lot Coverage - Setback V Open Space - SPECIAL AREA REGULATIONS H (Historic)
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