San Diego Renter
- Offers information about both apartments and vacation rentals. Database searchable by rent levels, bedrooms, and bathrooms. Members can search by more features. Includes information about membership for both apartment seekers and landlords.
- http://www.sandiegorenter.com/

Rent Search
- Directory of apartments and rental housing.
- http://www.rentsearch.com/sandiegoca.html

Nova Roommate Finders
- Roommate referral service. Registration online.
- http://www.roommatesandiego.com/

MG Properties
- Manages over 40 apartment properties in the county. Photos and information about each property, arranged by area.
- http://www.mgproperties.com/

H. G. Fenton Company
- Rental apartments in several locations in the county. Availability, prices, photos and features.
- http://www.hgfentonhomes.com/

Trilar Management Group
- Specializes in property management. A search feature allows one to browse properties they manage in various county locations.
- http://www.trilar.com/

San Diego County Apartment Association
- Services for owners and tenants include educational programs and counseling. Calendar of events and membership information.
- http://www.sdcaa.com/

eRentList.com
- Directory of rentals throughout San Diego County.
- http://www.erentlist.com/