Unique Investment Opportunity in Twin Oaks Valley – only 10 miles inland. 4 contiguous parcels with 2 detached houses and 800 sf shed on 8.67 acres, including private road. Two houses: 515B, and 515A – appraised in October 2023 for a combined value of $2.2M! Appraisal did NOT include the 2 additional parcels. APNs 182-280-13, -14, -15, and 182-240-25. R-2 zoning. Unincorporated San Marcos – San Diego County jurisdiction. 515B was built in 1982, and currently has 4 bedrooms, 3 baths, plus a studio, with an attached 2 car garage. 515A was built in 1947, and currently has 4 bedrooms and 2 baths. Both houses and the shed have separate electric meters, and there is one 2 inch water meter at the shed. This is an opportunity for a builder to create a compound, or develop multiple properties. County zoning allows for ADU and detached workshops. Fantastic location: easy freeway access, both the 78 and 15 are less than 10 minutes away. Only 4 miles to Cal State San Marcos and Palomar College. Rare chance to build in Twin Oaks Valley!
Property Details
Price:
$1,800,000
MLS #:
NDP2504938
Status:
Active
Beds:
0
Baths:
0
Type:
Single Family
Neighborhood:
92069
Listed Date:
May 19, 2025
Total Sq Ft:
4,227
Lot Size:
377,665 sqft / 8.67 acres (approx)
Year Built:
1982
See this Listing
Schools
Interior
Laundry Features
ICL
Exterior
Community Features
SUB, VLY
Parking Spots
8
Financial
Map
Community
- AddressCassou RD Lot 76009 San Marcos CA
- CitySan Marcos
- CountySan Diego
- Zip Code92069
Subdivisions in San Marcos
Market Summary
Current real estate data for Single Family in San Marcos as of Oct 29, 2025
235
Single Family Listed
49
Avg DOM
467
Avg $ / SqFt
$893,352
Avg List Price
Property Summary
- Cassou RD Lot 76009 San Marcos CA is a Single Family for sale in San Marcos, CA, 92069. It is listed for $1,800,000 and features 0 beds, 0 baths, and has approximately 0 square feet of living space, and was originally constructed in 1982. The average price per square foot for Single Family listings in San Marcos is $467. The average listing price for Single Family in San Marcos is $893,352.
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