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Land for Sale in Bonsall, California

Old River Rd, Bonsall, CA 92003

$4,100,000
90 acres
Active sale
Est $30,179/mo

DISCREET INSTITUTIONAL OPPORTUNITY | 89.88 CONTIGUOUS ACRES | SINGLE LEGAL LOT Positioned at the strategic intersection of ecological asset preservation and multi-use land holding, this unified 89.88-acre contiguous tract represents one of the final legacy footprints in the Bonsall's San Luis Rey River corridor. Comprising three parcels legally bound as one single lot, the property's unique strength lies in its naturally bifurcated biological and topography profiles. THE ECOLOGICAL FOOTPRINT: Approximately 69.26 acres feature pristine, high-density native flora, including Diegan Coastal Sage Scrub and a prominent Southern Willow Scrub riparian corridor intersecting the acreage. This native landscape serves as an exceptional private nature buffer, insulating the topography from future regional fragmentation. Positioned ahead of the upcoming North County Multiple Species Conservation Program (MSCP) framework, this acreage presents significant long-term potential for high-value conservation easements, regional habitat mitigation offsets, or permanent stewardship. THE UTILITY CORE: Approximately 20.26 acres of flatter, low-constraint topography-predominantly classified as non-native grassland, disturbed habitat, and existing agricultural pockets-provide an immediate, friction-free envelope for a grand private compound, secure ingress/egress, or sovereign holding utility without triggering extensive environmental mitigation exposure. This is a data-driven land holding tailored explicitly for the forward-thinking legacy investor, conservation trust, or sovereign entity seeking absolute privacy, environmental equity, and watershed security. Complete biological mapping, Holland Code habitat classifications, and certified parcel surveys are available upon request. The offering price reflects a repositioning of asset from conventional rural or residential land to a strategic land holding aligned with the emerging MSCP-driven deman dynamics.

Location

Street address
Old River Rd
Zip code
92003
Community
Bonsall
Elevation
150 feet

Directions

Use Map App 76 to OLD River Rd. At the corner of Dentro De Lomas and Old River Rd.

Property details

Acreage
90 acres
Zoning
R-1:SINGLE FAM-RES Reside
MLS #
MRMLS NDP2601635
Posted

Parcels

  • 1261203400

Details and features

Listing

Type
Land
Zoning
R-1:SINGLE FAM-RES, VACANT LAND On 3 Parcels: APN: 126-120-34-00 Approx 37.03 Acres SR-10 APN: 126-120-35-00 Approx 39.66 Acres SR-2 APN: 126-300-46-00 Approx 15.08 Acres SR-10 Per the San Diego County General Plan 2020:

Lot

View
Hills, River, Valley
Features
Corner Lot, Over 40 Units/Acre

Property utilities

CategoryTypeStatus
PowerGridAvailable

Listing history

DateEventPriceChangeSource
June 16, 2026Price increase$4,100,000$510,000 14.2%MRMLS
Feb 20, 2026New listing$3,590,000MRMLS
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This 90-acre property is located at Old River Rd in Bonsall, CA 92003. The land is available for sale, priced at $4,100,000 — $45,556 per acre.

Listed by Real Broker, (619) 248-6434

Checked 2 hours agoUpdated

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