Opportunity in a Prime San Marcos Location! This single-story 4-bedroom, 2-bath home sits on a 10,000 sq ft lot, offering exceptional flexibility and potential. In addition to the main residence, the property includes a permitted detached structure currently used as a private gym, providing ideal space for a home fitness studio, office, hobby room, or creative workspace. The functional floor plan features a living room with a fireplace, creating a warm and inviting gathering space. RV parking and three additional storage sheds, providing abundant space for vehicles, equipment, and storage. A large 2-car garage, generous outdoor areas, and appliances included add to the home’s overall appeal. Conveniently located near neighborhood schools, parks, shopping, and dining, this property offers a rare chance to add value in an established San Marcos community.
MLS #
CRNDP2600175
MLS Source
California Regional MLS
Days on Site
2
Bedrooms
Ground Floor Bedroom
Appliances
Dishwasher, Garbage Disposal, Refrigerator, Water Softener
Fireplace
Living Room
Laundry
In Garage
Cooling
Central Forced Air
Heating
Forced Air
Pool
None
Garage/Parking
Garage: 2 Car(s)
Elementary District
San Marcos Unified
High School District
San Marcos Unified
HOA Fee
$0
Zoning
R-1:SINGLE FAM-RES
678 Douglas Ave is a Single Family Residence in San Marcos, CA 92069. This 1,388 square foot property sits on a 0 Sq Ft Lot and features 4 bedrooms & 2 full bathrooms. It is currently priced at $745,000 and was built in 1974. This address can also be written as 678 Douglas Ave, San Marcos, CA 92069.
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This listing information is up-to-date as of January 08, 2026. For the most current information, please contact Michelle Ferry-Cronin, (725) 230-1443