
Old River Road Bonsall
DdirtBonsall, CA 92003
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, fireAbout 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.
- Slopemedian 23%, 42% over 25%, about 22.0 acres under 25%USGS 1 m lidar
- Soilcoarse sandy loam, somewhat excessively drained, very limited for housesNRCS soil survey · Sep 11, 2026
- Floodpart in zone A, 1% annual chanceFEMA flood map · May 16, 2012
- FireVery HighCAL FIRE hazard zones
- Road frontage1,821 ft on Dentro De Lomas Rd and Old River RdSanGIS rights of way · Nov 3, 2026
- ZoningRR, rural residential, 4-acre minimum lotCounty of San Diego zoning · Apr 7, 2026
- Homes allowedabout 3 (1 per 10 acres)County of San Diego zoning · Apr 7, 2026
- WaterRainbow Municipal Water DistrictSANDAG water districts
- Sewerpublic sewer likely, a main is nearbyCounty sewer and septic screening · May 7, 2025
- Coastal ZoneoutsideSANDAG coastal zone
- Farm contractno farm contractCounty farm contracts
- Elevation250 ft, 159 to 370 ft across the lotUSGS 1 m lidar
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.
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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.
- 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.