




0 Harness St, Spring Valley, CA 91977
Rare double-lot development opportunity in Spring Valley — APNs 578-102-14-00 and 578-102-15-00 sold together. Two contiguous parcels create a flexible canvas for builders, investors, and end-users navigating today's California housing landscape. Under current 2026 state law, the development potential is significant: build two single-family residences (up to ~3,000 sqft each), plus the potential for ADUs and Junior ADUs on each lot per California's expanded ADU statutes. SB-9 lot-split and duplex provisions may further unlock additional units, subject to County of San Diego zoning and verification.
Bathrooms
0
Lot Size
28,314 sqft
Days on Market
126
HOA Fee
N/A
MLS #
250027245SD
$0
| Rating | School Name | ||
|---|---|---|---|
| No school data available for this area. | |||
Balanced market
Avg. time on market
This is a Balanced Market. Homes are selling at a moderate pace.
Flood Risk
Minimal — not in a FEMA flood zone
Wildfire Risk
Moderate — near wildland-urban interface
Heat Risk
Low — moderate summer temperatures
Earthquake Risk
Southern California seismic zone
Based on price, location, and features
Topfind Realty, DRE # 02240815, is a licensed real estate broker in California. Topfind Realty pledges to support the Fair Housing Act and adhere to Equal Housing Opportunity laws.
Copyright © 2026 Topfind Realty. All Rights Reserved.