(800) 661-5080
Advanced Search

Beds

1
2
3
4
5
6+

Baths

1
2
3
4
5
6+
Reset
Done

Price selector

$0 to $1,500,000

Reset
Done
More Search Options

El Cajon Older Homes: Permit Records, Sewer Laterals and Inspections

Much of El Cajon was built in the decades after World War II, and many of those homes have since gained rooms, garage conversions, new roofs and replaced systems. Buying one means matching the house in front of you to what the records show, checking the sewer line and planning inspections for aging equipment. This guide explains where El Cajon’s records are kept and what each one proves.

Why the age of the housing matters

The city’s history page says El Cajon covered under two square miles in 1950 and about 9.8 square miles by 1960, with population growing sixfold. That growth strained infrastructure and was followed by projects that included a sewer network replacing septic tanks. For a buyer, the point is simple: a house from that era may have original drain lines, decades of owner changes and work done before current codes.

Confirm which agency holds the permits

Some El Cajon mailing addresses are in unincorporated county territory; the Otay Water District lists unincorporated areas of El Cajon in its service area. If the parcel is unincorporated, the County of San Diego, not the city, holds the permits. Check jurisdiction on the county parcel record before you request anything.

City permit records

Inside the city, the Project Assistance Center combines planning, engineering and building services. Its online portal, PACO, handles applications, permit payments, inspection scheduling and status updates for existing projects. The Building Permits page lists permits for reroofs, electrical meter upgrades and mobile home installations, and explains owner-builder permits.

Neither page explains how to search historical permits for an address. Call the Building counter listed on the Project Assistance Center page and ask how to obtain permit history, plans and final inspections. The City Clerk receives records requests and suggests searching first, then calling the office if the record is not found.

Assessor building records

The San Diego County Assessor/Recorder/County Clerk offers building record requests through a form, along with roll searches by parcel or address. Compare the assessor’s living area and room count with the permits. A difference does not prove unpermitted work, and a match does not prove the work was permitted; it tells you what to ask.

Additions, conversions and second units

For each addition, enclosed patio or garage conversion, look for a permit, approved plans and a final inspection. A garage converted to living space should have a permit that identifies the new use. For a rear unit, confirm whether it was permitted as an ADU.

State law on previously unpermitted ADUs changed recently. A February 2025 HCD letter told the city its ADU ordinance had not yet addressed AB 2533 changes on permitting previously unpermitted units, among other items. If a home has an unpermitted unit, ask the Planning Division what path, if any, applies to it now, and treat the unit as unverified until you have that answer in writing.

The sewer lateral

The lateral is the private line from the house to the city sewer main. The El Cajon pages checked for this guide cover sewer billing and overflow emergencies but do not state lateral repair responsibility or any point-of-sale inspection rule, so ask Engineering Services how responsibility is divided for the address. Do not assume the city repairs any part of it.

Order a camera inspection during escrow, especially for a house from the post-war decades, and ask for the video and a written report. Ask the seller for invoices and permits for any past lateral repair. The city’s sewer and wastewater overview gives business-hours and after-hours numbers for sewer overflow emergencies, which are worth saving after closing.

Lead paint, systems and hazards

For homes built before 1978, the EPA’s lead renovation, repair and painting program requires paid contractors who disturb painted surfaces to be lead-safe certified firms. Owners working on their own homes are generally exempt unless they rent the home out or renovate it for resale. Build this into contractor bids if you plan updates.

Ask the general inspector to flag the roof, electrical panel and wiring, plumbing, water heater, HVAC, foundation and drainage, then add specialists where needed. Check hazard maps separately. The city’s fire hazard severity zone page described its 2025 process to adopt updated local maps; see the State Fire Marshal maps and the FEMA Flood Map Service Center for the address, and read the natural hazard disclosure report.

Records register

Item What to request What it establishes What it does not establish Next step
Jurisdiction County parcel record Whether city or county permits apply Accuracy of the mailing address Request records from the right office
Permit history City Building counter or PACO status Permits issued and finaled Workmanship Compare with the house
Assessor record Building record request; roll data Recorded area and rooms That space was permitted Flag differences
Addition or enclosed patio Permit, plans, final Permitted added space Condition today Inspector review
Garage conversion Permit naming the new use Legal use of the space Parking rules today Ask Planning
Rear unit ADU permit and final Legal second unit Rental income Confirm current rules
Sewer lateral Camera video; repair invoices Line condition and repair history Who pays for every segment Ask Engineering; get estimate
Pre-1978 home Year built from records Whether lead-safe rules may apply Whether lead is present Use certified contractors
Roof, electrical, plumbing Permits for updates; inspection reports Documented updates Condition of unpermitted work Specialist inspection
Hazard maps FHSZ and FEMA lookups; NHD report Mapped hazards at the address Insurance price or availability Get quotes early

When records and the house do not match

If the listing shows more rooms or area than the permits support, ask the seller for plans and permit cards, and treat the difference as unverified until it is resolved. Sellers must disclose known material facts; see our seller disclosures guide. Unverified space also changes which sales are fair comparisons, as our El Cajon comparable sales guide explains.

Official sources checked October 31, 2026: City of El Cajon: history; Otay Water District: about the district; City of El Cajon: Project Assistance Center; City of El Cajon: building permits; City of El Cajon: City Clerk; San Diego County Assessor/Recorder/County Clerk; California HCD: El Cajon ADU ordinance findings; City of El Cajon: Planning; City of El Cajon: about sewer and wastewater; US EPA: lead renovation, repair and painting program; City of El Cajon: fire hazard severity zone maps; State Fire Marshal: fire hazard severity zones; FEMA Flood Map Service Center. This guide organizes evidence for a property decision; it is not legal, tax, insurance or engineering advice, an appraisal or a determination for a particular parcel.

Compare Listings