9170 Harness St is a 616 square foot house on a 6,970 square foot lot with 1 bedroom and 1 bathroom. Based on Redfin's Spring Valley data, we estimate the home's value is $462,259.
Single-familyProperty Type
1954Year Built
6,970 sq ftLot Size
$750Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$462,259
$13K since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 36.8% lower than the average sale price ($732K) of 5 comparable homes.
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Zoning
M52
Limited Impact Industrial
The M52 Use Regulations are intended to create and preserve areas where manufacturing and industrial uses which evidence no or very low nuisance characteristics may locate. Non-industrial uses which support or are adjuncts to industrial uses and are compatible with such uses are permitted within the zone particularly administrative, sales, and services uses. Typically, the M52 Use Regulations would be applied in urban or suburban areas where nuisance characteristics involving noise, odor, traffic generation or unsightliness were undesired and where all uses (with certain exceptions) would be conducted entirely within enclosed buildings. Various applications of the M52 Use Regulations with appropriate development designators can create a community of industries in a high quality industrial park or a strip of low impact industrial uses.
Permitted uses
Include but are not limited to:
Community / recreation center
Commercial laundry
Manufacturing
Warehouse
Fire house
Police station
Post office
Recreation-Other
Agriculture-Cropland
Timberland
Property details
Exterior
Property Information
Living Sq. Ft: 616
Building Sq. Ft: 616
Legal Description: DOC73-219710 IN E H OF S H OF SEQ OF NWQ OF SEQ SEC 5-17-1W
Lot Information
# of Buildings: 1
Land Sq. Ft: 6,970
Acres: 0.16
Zoning Code: M52
County Use Description: 1 FAMILY RESIDENCE
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 1
Baths: 1.0
Sq. Ft.: 616
Stories: —
Lot Size: 6,970 square feet
Style: Single Family Residential
Year Built: 1954
Year Renovated: 1954
County: San Diego County
APN: 5782801400
Home facts updated by county records on Aug 20, 2026
Around this home
Schools
Science, Technology, Engineering, Arts, And Math Academy At La Presa
Public 5-8 • Assigned • 0.5mi
6/10
Mount Miguel High School
Public 9-12 • Assigned • 0.9mi
4/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Climate risks
1/10 Flood Factor
Minimal risk of a flood reaching the building in the next 30 years
3/10 Fire Factor
0.46% chance of being in a wildfire in next 30 years
5/10 Heat Factor
6 days above 93° expected this year, 18 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
3/10 Air Factor
3 unhealthy days expected this year, 3 days in 30 years
Provided by First Street
Historical weather
Spring Valley, CA • 91977
Average low and high temperatures (°F)
70
48
72
50
74
53
72
53
73
56
77
60
78
62
83
63
83
64
79
58
73
52
71
50
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
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Dec
Sun exposure
In this area, properties receive around 8.4 hours in
June and 7.4 hours in December, placing it above the
U.S. average for solar exposure.
8.4 hrs
7.4 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$440,000 – $532,000
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