City facts, housing, address checks, school districts, local rules for owners and transit, each with its source.
El Cajon is an incorporated charter city in San Diego County's East County. It had 106,215 residents at the 2020 Census. State data from 2020 show about 49 percent of its homes in buildings with more than one unit and about 41 percent in detached single-family houses. Before you make an offer, check the exact address for HOA documents, fire hazard zone, Gillespie Field's airport influence area, and which school districts serve it. If you plan to rent a home short term or add an ADU, read the City's rules first.
General information only, not legal advice. See the note near the end of this page.
Karina Somenzari, REALTOR®, works with buyers and sellers in El Cajon and across San Diego County's cities and communities, in English or Portuguese; contracts and escrow documents are in English.
| Topic | What the official record shows |
|---|---|
| City status | At the November 12, 1912 general election, 123 of 158 electors voted to incorporate. El Cajon is one of San Diego County's 18 incorporated cities. |
| The name | "El Cajon" means "the box" in Spanish, according to the City's history page. |
| Government | A charter city. The council is an elected mayor, chosen by all voters in the city, plus four district councilmembers. City Hall is at 200 Civic Center Way, El Cajon, CA 92020. |
| Population | 106,215 at the 2020 Census. |
| Land area | 14.51 square miles of land (Census Bureau, 2025 Gazetteer). |
| ZIP code | City Hall is in ZIP 92020. ZIP codes do not follow city limits, so the City suggests its boundary map to confirm that an El Cajon mailing address is inside the city. |
| Fire service | Heartland Fire & Rescue, a joint powers agency formed by El Cajon, La Mesa and Lemon Grove. The agreement took effect January 1, 2010. |
| Airport | Gillespie Field, the County's oldest and largest airport, sits in the northwest corner of El Cajon. |
The City boundary map is linked from the City's zoning information page.
El Cajon's housing is mixed. The City's 2021-2029 Housing Element reports this split of homes from the California Department of Finance's 2020 estimates:
| Type of building | Share of El Cajon homes (2020) |
|---|---|
| Single-family, detached | About 41% |
| Single-family, attached (such as townhomes) | About 5% |
| Buildings with 2 or more units (condos and apartments) | About 49% |
| Mobile homes | About 5% |
The General Plan sets aside about 49 percent of the city's land for homes of all kinds. The lowest-density areas, with 3 or fewer homes per net acre, are mostly on the steeper southern and eastern edges. Each check below depends on the exact address, so look it up before you write an offer. A free property report pre-checks fire, flood and fault zones for any San Diego County address.
If you buy a resale home in a homeowners association (HOA), California Civil Code 4525 says the seller must give you the association's governing documents and a written statement of its current regular and special assessments and fees. Request them early, since they affect your monthly cost.
A Community Facilities District (CFD), also known as Mello-Roos, adds a yearly special tax to the property tax bills of parcels inside it. The County Auditor's FY 2025-2026 list of active CFDs has no entry for the City of El Cajon, and none for Cajon Valley, Grossmont or La Mesa-Spring Valley school districts. That does not clear any one home, because another agency can levy a special tax and the list updates yearly. To check a parcel, use the County special assessments lookup, then review the property tax bill and the seller's disclosures.
CAL FIRE released updated Fire Hazard Severity Zone maps on March 24, 2025. In El Cajon, all mapped zones are in the local responsibility area, with no state responsibility area. Parts of the city fall in the Moderate, High and Very High zones. Look up the address in CAL FIRE's zone viewer, which the City links from its fire hazard severity zone maps page. The seller's Natural Hazard Disclosure (NHD) report also states the zone for the home.
El Cajon takes part in the National Flood Insurance Program. FEMA's Community Status Book, printed October 20, 2026, lists an initial flood map from September 15, 1977 and a current effective map date of March 3, 2026. Look up any address at the FEMA Flood Map Service Center. If a home is in a FEMA Special Flood Hazard Area (a 1 percent chance of flooding in any given year), a lender may require flood insurance, so get a quote during your inspection period.
Gillespie Field's Airport Influence Area covers about two-thirds of El Cajon. Parts of the city also sit in the airport's noise contours. On a resale, the natural hazard report says whether the home is in an airport influence area, and if it is, you receive a "Notice of Airport in Vicinity." Check the Airport Land Use Commission's mapping tool for any address.
Several districts overlap in El Cajon, and assignment depends on the exact address. This page does not rate or rank schools.
| District | What the district says | Address lookup |
|---|---|---|
| Cajon Valley Union School District | Covers "the greater part of the City of El Cajon," plus County territory. Serves transitional kindergarten through 8th grade. The district says to contact the school to confirm eligibility. | Cajon Valley school locator and the district's boundary maps page |
| Grossmont Union High School District (GUHSD) | Serves El Cajon, Santee, Lemon Grove, most of La Mesa, parts of San Diego and several unincorporated communities. El Cajon Valley High School is on its list of schools. | GUHSD School Locator |
| La Mesa-Spring Valley and Santee School Districts | Each serves a part of El Cajon, based on district boundary map data. Ask the district whether your address is inside its lines. | Contact each district directly. |
These rules change. These notes reflect the municipal code through Ordinance No. 5177 (June 9, 2026) and City pages read in October 2026. Confirm with the City before you act.
The City's Finance page says short-term, or vacation, rentals pay the same Transient Occupancy Tax as hotels and that every provider must keep an active City business license and report the tax online. A search of the municipal code found no short-term rental permit, cap or ban. That is not approval. Zoning may still restrict them, and the code and the Finance page do not state the same tax rate, so confirm with the City's Finance Department before you list a home.
El Cajon's zoning code has a section for accessory and junior accessory dwelling units (Section 17.140.180), and a building permit is required for any new one. On a single-family lot, the code allows up to one ADU and one junior ADU. On a lot with existing multifamily housing, it allows up to eight detached ADUs, or as many as there are main homes on the lot, whichever is less. The City also has an ADU Loan Program for owner-occupied homes. Ask the Housing division about funding at 619-441-1710.
A search of the municipal code in October 2026 found no local rent control or just-cause ordinance, so state law applies by default. Confirm with the City. The code does have a Mobile Home Rent Mediation chapter (Chapter 5.82), and it requires one month's rent as relocation help for eligible tenants when existing development is converted under a Planned Unit Development permit (Section 17.60.360). A real estate attorney can tell you which rules apply to a rental.
Interstate 8 borders the city's central high-density area. These MTS trolley stations are in El Cajon: El Cajon Transit Center (352 S. Marshall Ave.), which serves the Orange, Green and Copper lines, plus Arnele Avenue and Gillespie Field, which are on the Copper Line. MTS bus routes that end at the transit center include Route 115 to SDSU Transit Center and Route 848 to Lakeside. See the MTS trolley page and bus routes page for current service.
This section names places that appear in City documents and on City pages. Neighborhood boundaries are informal, so use the City's boundary map to confirm that an address is inside the city limits.
The General Plan's Downtown Special Development Area is the area around Main Street and Magnolia Avenue. The Housing Element calls it the central business district, the center of governmental offices and the location of the City's oldest residential neighborhoods. Downtown is governed by the Downtown El Cajon Specific Plan (SP No. 182), which was most recently amended in April 2019.
The Housing Element refers to the Fletcher Hills neighborhood commercial corridor and to small lots along Fletcher in the western part of the city. The City runs the Fletcher Hills Center & Pool at 2345 Center Place. La Mesa's General Plan also labels a Fletcher Hills neighborhood on its side of the boundary, so check which city an address is in.
Bostonia is partly inside El Cajon and partly unincorporated. The City runs the Bostonia Recreation Center at 1049 Bostonia Street, next to the two-acre Bostonia Park. For the part outside the city limits, see the Bostonia guide.
The Housing Element lists the Parkway Plaza regional shopping area, the Arnele Transit Station area, and the East Main and Greenfield commercial area among the places where it applied its mixed-use overlay. Arnele Avenue is a Copper Line trolley station (see Getting around).
The unincorporated communities of Granite Hills and Crest lie east of El Cajon and are governed by the County of San Diego, not the City. The County's community plan says a finger of land within El Cajon's jurisdiction splits Granite Hills into north and south sections. See the Granite Hills guide and the Crest guide.
The City's parks page lists eleven parks: Albert Van Zanten Park, Bill Beck Park, Bostonia Park, Cajon Valley Middle School Park, Fire Station Park, Fletcher Hills Center & Pool, Hillside Park, Judson Park, Karl Tuttle Park, Renette Park and Wells Park. Van Zanten Park is a 15-acre complex, and Bostonia Park is two acres. The City's history page also describes the Corona Hotel at Main and Magnolia in the early 1900s, and the City has a page for Centennial Plaza.
If you own in El Cajon, several checks above are part of your disclosure package: the NHD report, HOA documents and any special-tax notice. California requires other forms too, so this is not a complete list. See selling a house in San Diego for the disclosure list, costs and timing, or request a free home value estimate.
Karina Somenzari, REALTOR®, is a real estate agent licensed in California (DRE# 02248263) with eXp Realty of California, Inc. She represents buyers and sellers in El Cajon and across San Diego County. You can work with her in English or Portuguese; contracts and escrow documents are in English.
To start, tell her about your plans, call 619-369-4598 or, if you're selling, ask what your El Cajon home is worth. If you'd rather talk in Portuguese, read about working with a Portuguese-speaking real estate agent.
El Cajon is its own city in San Diego County, separate from the City of San Diego. Voters approved incorporation at the November 12, 1912 general election. It is a charter city, with an elected mayor and four district councilmembers. Fire service comes from Heartland Fire & Rescue, a joint powers agency of El Cajon, La Mesa and Lemon Grove.
Check the parcel. The County Auditor's FY 2025-2026 list of active Mello-Roos districts shows none levied by the City of El Cajon or its main school districts. A parcel can still carry a special tax from another agency, so check the property tax bill, the County's special assessments lookup and the seller's disclosures.
Grossmont Union High School District serves El Cajon for grades 9 to 12. For lower grades, Cajon Valley Union covers most of the city, and La Mesa-Spring Valley and Santee districts serve parts. Assignment depends on the exact address, so use each district's locator and confirm with the school.
The El Cajon Transit Center, at 352 S. Marshall Ave., is a stop for the Orange, Green and Copper trolley lines. Arnele Avenue and Gillespie Field are Copper Line stations in the city. Check MTS for current service.
Check with the City first. El Cajon charges its transient occupancy tax on short-term and vacation rentals and requires an active City business license. A search of the municipal code in October 2026 found no short-term rental permit, cap or ban, but zoning may still limit them. Ask the City before you list a home.
For fire, use CAL FIRE's fire hazard severity zone viewer, which the City links from its fire hazard zone maps page. For flood, look up the address at the FEMA Flood Map Service Center. The seller's Natural Hazard Disclosure report also states the zones for the home.
Karina offers a free, no-pressure conversation in English or Portuguese, whether you're buying or selling in El Cajon (contracts and escrow documents are in English). Bring an address, and she'll go over these checks with you.