What Is San Diego's 30-Foot Coastal Height Limit?

You may be considering a San Diego property near the coast or in Midway and wondering whether a proposed building can rise above 30 feet. The plain answer is that San Diego Municipal Code section 132.0505 sets a 30-foot limit within its defined Coastal Zone. Ordinance O-22141 removes the former Midway exception from the code, but its effect inside the Coastal Overlay Zone waits for California Coastal Commission certification.

That answer does not settle the rule for an individual parcel. The code uses a historic Interstate 5 boundary, identifies three named exempt areas, and ties the latest amendment’s application inside the Coastal Overlay Zone to action by the California Coastal Commission. This is general information and not legal advice.

What does San Diego’s coastal height rule say?

San Diego’s rule says that no building or addition may be constructed above 30 feet within the Coastal Zone defined by Municipal Code section 132.0505.

The stated purpose of the Coastal Height Limit Overlay Zone is to provide a supplemental height limit for specific coastal areas, as enacted by San Diego voters. The municipal code says the rule applies notwithstanding any section to the contrary.

An editor’s note identifies section 132.0505 as a codification of Proposition D, adopted by city voters and effective December 7, 1972. The ordinance recitals describe the original Height Limit Ordinance as People’s Ordinance No. 10960, enacted as Proposition D on November 7, 1972. The section was later amended through voter measures in 1988, 1998, 2000, and 2020.

The voter-enacted status matters because section 132.0505 says an amendment, including one creating an exception to the 30-foot limit, may be made only by a majority vote of San Diego voters.

Where does the Coastal Zone extend?

The Coastal Zone extends from San Diego’s northern city limits to the international border, seaward to the outer limits of city jurisdiction, and inland to the location of Interstate 5 on January 1, 1971.

That historic reference is important. The code does not simply say that every property currently west of Interstate 5 is covered. It defines the inland boundary by the freeway’s location on a specific date.

The overlay is shown on Map No. C-380, filed in the Office of the City Clerk as Document No. 743737. The city’s documents do not determine whether a particular lot lies inside that boundary, so an address-level review should start with the official map and current city records.

San Diego’s voter-enacted height overlay is also distinct from coastal permitting in another city. For that contrast, see the guide to the Carlsbad coastal permit zone.

How is the 30-foot height measured?

The 30-foot height is measured from a base determined under the Uniform Building Code of 1970.

That measurement rule comes directly from section 132.0505(c). The city’s documents do not provide an address-level calculation, building design review, or determination for any specific project. A listing description, conceptual drawing, or general statement that a property is coastal does not answer how the code’s measurement method applies to that site.

Section 132.0505 lists three named exempt land areas. Apart from those areas and the restoration of a chimney and rooftop cupola on a 1915 brewery building, the code says there is no exception under that section.

Other development rules remain separate questions. A buyer considering an accessory dwelling unit can review the general ADU rules, but that guide does not establish whether a particular San Diego lot is inside this overlay or how its height would be measured.

T. wanted to add a level to a San Diego home and believed the 30-foot coastal height limit was measured from the sidewalk. The sloped lot made that assumption especially important. We asked the design team to confirm the applicable measurement method and zoning rules before he relied on a simple street-to-roof calculation.

Why was the Midway exception repealed?

The Midway exception was repealed because court rulings set aside the city’s approvals that placed Measure C on the November 8, 2022 ballot.

According to Ordinance O-22141, city voters had approved Measure C to amend the Height Limit Ordinance for the Midway-Pacific Highway Community Plan area. That exception became subsection 132.0505(b)(4).

The ordinance recitals trace what followed. The Superior Court ruled for the city on January 29, 2024. On October 17, 2025, California’s Fourth District Court of Appeal reversed that ruling and invalidated all city approvals to place Measure C on the ballot. The Superior Court then issued a final writ of mandate on March 12, 2026, directing the city to set aside the approvals of the ordinance that submitted Measure C to voters. The recitals say all appeals were exhausted and repeal was necessary to comply with those rulings.

Ordinance O-22141 removes subsection (b)(4). The revised text retains only the three named exempt areas, and subsection (d) now refers to those three exceptions.

The ordinance also waives the Planning Commission hearing and recommendation provisions identified in Municipal Code sections 112.0509 and 111.0107 because it implements the Superior Court’s writ.

When does Ordinance O-22141 apply?

Ordinance O-22141 has a recorded effective date of October 29, 2026, but its provisions do not apply inside the Coastal Overlay Zone until the California Coastal Commission unconditionally certifies them as a Local Coastal Program amendment.

The ordinance cover gives September 29, 2026 as the date of final passage. Its effective-date clause says it takes force on the thirtieth day after final passage, except for provisions under Commission jurisdiction. The code history accordingly records amendment on September 29 and effectiveness on October 29.

As of November 6, 2026, Insider has not confirmed that the Commission has certified the amendment. The applicable code version for a particular Midway lot is therefore uncertain until the Commission acts. Check the current municipal code, the city’s Coastal Overlay materials, and Commission certification records before relying on the repeal for a parcel or project.

KPBS and NBC 7 reported the repeal vote in a report dated August 24, 2026; the posted ordinance carries a September 15, 2026 adoption date and a September 29, 2026 final passage date. Insider did not reconcile the two sets of dates. KPBS reported that the California Supreme Court declined to take the case, while NBC 7 San Diego reported a unanimous council vote.

What should a buyer or investor verify?

A buyer or investor should verify the parcel’s location, the governing code version, and the official height measurement before treating 30 feet or any exception as settled.

Start with Map No. C-380 and the parcel’s position relative to the location of Interstate 5 on January 1, 1971. Then check whether the property falls within one of the three named exempt areas. For a Midway property, confirm the current status of Commission certification and which version of section 132.0505 the city applies.

The city’s broader development code can affect a project independently of this voter-enacted overlay. The guide to San Diego’s 2026 land development code provides related context, but neither that guide nor the city documents cited here determine an individual property’s allowed design.

Does the repeal decide the Midway Rising proposal?

The repeal does not establish that the Midway Rising proposal is approved, denied, or exempt from height restrictions.

NBC 7 reported that the Sports Arena site proposal was expected to go to the City Council in the fall. It also reported that projects including affordable housing may qualify under state law for an exemption from height restrictions, meaning the proposal could still move forward without Measure C.

Those statements do not confirm that this proposal qualifies for an exemption or that any council action occurred. The city’s documents also give no final project decision. Current city agendas and posted project records are the appropriate places to check for later action.

The short version

San Diego’s voter-enacted rule caps buildings and additions at 30 feet within the Coastal Zone defined by section 132.0505. That zone uses the location of Interstate 5 on January 1, 1971, as its inland boundary, and height starts from a base measured under the Uniform Building Code of 1970.

Ordinance O-22141 removes the Midway exception. The code records an October 29, 2026 effective date, while application inside the Coastal Overlay Zone awaits unconditional certification by the California Coastal Commission. The documents do not answer the height limit for a particular address or decide the Midway Rising proposal.

For a property-specific starting point, use the home value tool.