Old River Road Bonsall
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Old River Road Bonsall

Ddirt

Bonsall, CA 92003

$4,100,000

Lot Size

90.00 acres

Asking $/Acre

$45,556

Days on Market

264

Property Type

Land

HOA/mo

N/A

MLS ID

NDP2601635

This property is in Bonsall (92003). View the Bonsall land market →

About This Property

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 assets from conventional rural or residential land to a strategic land holding aligned with the emerging MSCP-driven demand dynamics.

Location

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What a Buyer Will Check

Caution: flood zone, fire

About 37.9 acres of vacant residential land on Old River Rd, county land with a Bonsall address, zoned RR, rural residential, 4-acre minimum lot. The zoning allows about 3 homes (1 per 10 acres). Part of it slopes: lidar puts the median slope at 23%, with 42% of it over 25%, and the soil survey calls it coarse sandy loam, somewhat excessively drained, very limited for houses. Flood map: part in zone A, 1% annual chance. It sits in a Very High fire zone.

From FEMA, USGS lidar, the USDA soil survey, CAL FIRE, SANDAG and county and city zoning, checked Nov 7, 2026. Public records, not a survey: confirm with the city or county before you buy.

Want to know more about this land or have questions?

Zoned Schools

  • Elementary

    Bonsall Elementary · grades K-5 · Bonsall Unified

  • Middle

    Norman L. Sullivan Middle · grades 6-8 · Bonsall Unified

  • High

    Bonsall High · grades 9-12 · Bonsall Unified

The district's assigned schools for this parcel, from its attendance boundaries and rules. Boundaries change: confirm with the district before you buy.

Dirt Analysis
Ddirt
379% above comp value
Asking $4,100,000 vs ~$856,667 implied by sold-land comps
Lot size
90.00 acres
Asking $/acre
$45,556
County median $/acre (sold)
$8,209county-wide
Comp-implied value
$856,667

Benchmarked against 2,889 sold-land comps (5-yr, recency-weighted) via zip price-size model · high confidence. Land value is site-specific — zoning, utilities, access, and buildability are not modeled. Not an appraisal.