Commercial Real Estate in San Diego: Base Zones, Downtown PDO, Industrial Land and the Coastal Height Limit

By Matthew Martinez, Founder, CEO & Managing Broker, Diamond Real Estate Group. California DRE #01869679.

The City of San Diego is a patchwork of community plan areas. Commercial property ranges from downtown and the Gaslamp Quarter to neighborhood commercial strips, regional centers, and industrial and R&D districts, including those in community plan areas such as Kearny Mesa and Otay Mesa. Each parcel carries a citywide base zone, a community plan land use designation, and sometimes a planned district or overlay, so confirm all three with Development Services before you commit. This page covers the Land Development Code as of October 2026.

Who controls the parcel

The City zones land through the Land Development Code (San Diego Municipal Code Chapters 11–15). Base zones are in Chapter 13, Article 1, and planned district ordinances are in Chapter 15. Downtown is governed by the Centre City Planned District Ordinance (SDMC Ch. 15, Art. 6, Div. 3), and the Gaslamp Quarter keeps its own PDO because it is a National Historic District. In 2019 the City took downtown planning and permitting back from Civic San Diego, so the Planning Department and Development Services now handle it (City of San Diego).

Other agencies apply on certain land. The Port of San Diego controls tidelands. In the Coastal Overlay Zone, some recent code amendments don’t take effect until the Coastal Commission certifies them (SDMC Ch. 13, Art. 1, Div. 5). The MCAS Miramar airport compatibility plan affects nearby industrial sites (SDMC Ch. 13, Art. 1, Div. 6). Incorporated neighbors such as Chula Vista, National City and La Mesa have their own codes.

San Diego zoning for commercial, industrial and mixed use

Sources: SDMC Div. 5, commercial, Div. 6, industrial.

In commercial zones, housing is allowed only where the use table permits it, and only when a commercial building already exists on the site or is part of the project. Many zones restrict ground-floor housing and parking at the front of the lot. Ground-floor commercial space needs at least 13 ft floor to floor, except in the Coastal and Clairemont Mesa height overlays. Commercial projects next to residential may need extra setbacks or step-backs above 30 ft (§§ 131.0540, 131.0543, 131.0548).

Downtown, industrial land and the Coastal Height Limit

Downtown (Centre City PDO). Downtown base zoning follows the Centre City PDO, not the Chapter 13 tables. The Marina district has been folded into it, and the Gaslamp Quarter has a separate PDO (City of San Diego). Downtown projects follow the citywide decision processes (Process 1 to 5).

Prime Industrial Lands. Community plans can designate industrial sites as Prime Industrial Lands, which limits the uses allowed there. For example, moving and storage facilities are barred on Prime Industrial Lands in IL, IH and IS, except within MCAS Miramar Accident Potential Zone 1. Housing is excluded from IL, IH and IBT, apart from watchkeeper quarters (SDMC § 131.0620, Table 131-06B).

Coastal Height Limit. In 1972, voters passed Proposition D, which caps buildings at 30 ft in the Coastal Zone. That zone runs inland to I-5, excluding the area bounded by National City, San Diego Bay and Laurel Street (City of San Diego ballot analysis). Voters later considered removing the roughly 1,324-acre Midway-Pacific Highway community from the limit (Measure E in 2020, then a 2022 measure after a court invalidated the first). For any coastal-zone site, confirm the current status of the height limit.

Short-term rentals, lodging and permits

• Short-term residential occupancy. Whole-home STRs need a Tier 3 license, capped at 1% of the city’s housing units outside Mission Beach, or a Tier 4 license, capped at 30% of Mission Beach. As of October 23, 2026, the City reported 807 Tier 3 licenses left and none left in Tier 4. Tier 3 and 4 licenses cost $1,129 plus a $41 application fee and last two years (City Treasurer).
• Use permits. Commercial use tables mark each use as permitted, limited, Neighborhood Use Permit or Conditional Use Permit. For an unclear use, the City makes a determination (SDMC Div. 5).
• Community plan overrides. In Kearny Mesa and Otay Mesa, community plan footnotes set lower floor area ratios for some commercial zones.

Transfer tax, business tax and property tax

The San Diego County Recorder collects documentary transfer tax at $0.55 per $500 of value, net of liens assumed, for both the county and its cities (SDARCC). I did not find a separate City of San Diego transfer tax. File a Preliminary Change of Ownership Report at recording. A sale reassesses the property under Proposition 13.

The City Treasurer collects a Business Tax from businesses and a separate Rental Unit Business Tax from anyone who owns, operates or manages residential rental property. That second tax covers apartments, hotels and motels, and it’s generally due March 1 (City Treasurer).

Due diligence that matters in San Diego

• Pull the base zone, community plan designation, any planned district (Centre City, Gaslamp or others) and every overlay for the parcel.
• West of I-5, confirm the 30 ft Coastal Height Limit and whether the Coastal Overlay Zone delays any recent code change.
• For industrial sites, check for a Prime Industrial Lands designation and MCAS Miramar compatibility rules.
• Confirm whether the use needs a Neighborhood Use Permit or a CUP.
• For mixed use, confirm that the commercial-component requirement and the ground-floor rules work with your plan.
• Work through our commercial due diligence checklist.

Questions people ask

Sources & notes

1. SDMC Ch. 13, Art. 1, Div. 5: commercial base zones
2. SDMC Ch. 13, Art. 1, Div. 6: industrial base zones
3. City of San Diego: downtown permitting transition (2019)
4. City of San Diego: Coastal Height Limit ballot analysis
5. City Treasurer: short-term residential occupancy
6. City Treasurer: Rental Unit Business Tax
7. San Diego commercial zoning (SDMC Div. 5, 2015 edition)
8. San Diego County Recorder: transfer tax

This page is general information, not legal or tax advice. Last reviewed October 2026 by Matthew Martinez.

Related: San Diego real estate guide · Multifamily property in San Diego · Commercial real estate services