646 S Grade Rd is a 1,800 square foot house on a 1.09 acre lot with 3 bedrooms and 2 bathrooms. Based on Redfin's Alpine data, we estimate the home's value is $848,641.
Single-familyProperty Type
1979Year Built
1.09 acresLot Size
$471Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$848,641
$0 since July
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 12.1% lower than the average sale price ($965K) of 6 comparable homes.
As the MLS and public records start to fill up, we'll list the details here.
Year
Property tax
Land + Additions
Assessment*
2025
$1,659 (+1.8%)
$28,157 + $110,171
$138,328
2024
$1,630 (−1.3%)
$27,605 + $108,011
$135,616
2023
$1,652 (+1.0%)
$27,064 + $105,894
$132,958
2022
$1,636 (−2.4%)
$26,534 + $103,818
$130,352
2021
$1,676 (+4.8%)
$26,014 + $101,783
$127,797
2020
$1,599 (+1.9%)
$25,504 + $99,788
$125,292
2019
$1,569 (+2.2%)
$25,243 + $98,765
$124,008
2018
$1,535 (+1.6%)
$24,749 + $96,829
$121,578
2017
$1,511 (+4.1%)
$23,789 + $93,070
$116,859
2016
$1,451 (+0.5%)
$23,789 + $93,070
$116,859
2015
$1,444 (+2.3%)
$23,323 + $91,246
$114,569
2014
$1,411 (+2.3%)
$22,523 + $88,116
$110,639
2013
$1,380 (+3.5%)
$22,523 + $88,116
$110,639
2012
$1,333 (+2.1%)
$22,422 + $87,718
$110,140
2011
$1,306 (+1.7%)
$21,983 + $85,999
$107,982
2010
$1,284 (+0.1%)
$21,552 + $84,313
$105,865
2009
$1,282 (+5.3%)
$21,391 + $83,683
$105,074
2008
$1,218
$21,442 + $83,882
$105,324
Tax history for 646 S Grade Rd
Year
Property tax
Land + Additions
Assessment*
2025
$1,659 (+1.8%)
$28,157 + $110,171
$138,328
2024
$1,630 (−1.3%)
$27,605 + $108,011
$135,616
2023
$1,652 (+1.0%)
$27,064 + $105,894
$132,958
2022
$1,636 (−2.4%)
$26,534 + $103,818
$130,352
2021
$1,676 (+4.8%)
$26,014 + $101,783
$127,797
2020
$1,599 (+1.9%)
$25,504 + $99,788
$125,292
2019
$1,569 (+2.2%)
$25,243 + $98,765
$124,008
2018
$1,535 (+1.6%)
$24,749 + $96,829
$121,578
2017
$1,511 (+4.1%)
$23,789 + $93,070
$116,859
2016
$1,451 (+0.5%)
$23,789 + $93,070
$116,859
2015
$1,444 (+2.3%)
$23,323 + $91,246
$114,569
2014
$1,411 (+2.3%)
$22,523 + $88,116
$110,639
2013
$1,380 (+3.5%)
$22,523 + $88,116
$110,639
2012
$1,333 (+2.1%)
$22,422 + $87,718
$110,140
2011
$1,306 (+1.7%)
$21,983 + $85,999
$107,982
2010
$1,284 (+0.1%)
$21,552 + $84,313
$105,865
2009
$1,282 (+5.3%)
$21,391 + $83,683
$105,074
2008
$1,218
$21,442 + $83,882
$105,324
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Zoning
A70
Limited Agricultural Zone
The A70 Use Regulations are intended to create and preserve areas intended primarily for agricultural crop production. Additionally, a limited number of small farm animals may be kept and agricultural products raised on the premises may be processed.
Typically, the A70 Use Regulations would be applied to areas throughout the County to protect moderate to high quality agricultural land.
Permitted uses
Include but are not limited to:
Agriculture
Housing
Processing
Fire house
Police station
Agriculture-Cropland
Agriculture-Grove / orchard
Park & open space
Property details
Exterior
Property Information
Living Sq. Ft: 1,800
Building Sq. Ft: 1,800
# of Units: 1
Legal Description: DOC73-311958 IN NEQ OF SWQ SEC 29-15-2E
Parking & Garage Information
# of Parking Spaces: 2
Lot Information
# of Buildings: 1
Land Sq. Ft: 47,480
Acres: 1.09
Zoning Code: A70
County Use Description: 1 FAMILY RESIDENCE
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 3
Baths: 2.0
Sq. Ft.: 1,800
Stories: —
Lot Size: 1.09 acres
Style: Single Family Residential
Year Built: 1979
Year Renovated: 1979
County: San Diego County
APN: 4031720100
Home facts updated by county records on Aug 20, 2026
Around this home
Schools
Places
Transit
Creekside Early Learning Center
Public K • Assigned • 0.9mi
Joan MacQueen Middle School
Public 6-8 • Assigned • 1.8mi
5/10
Granite Hills High School
Public 9-12 • Assigned • 7.1mi
6/10
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
8/10 Fire Factor
33% chance of being in a wildfire in next 30 years
5/10 Heat Factor
6 days above 97° expected this year, 17 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
4/10 Air Factor
6 unhealthy days expected this year, 7 days in 30 years
Provided by First Street
Historical weather
Alpine, CA • 91901
Average low and high temperatures (°F)
66
48
69
50
72
52
69
49
73
53
81
57
84
59
90
66
85
64
81
58
71
51
71
51
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 9.2 hours in
June and 7.5 hours in December, placing it above the
U.S. average for solar exposure.
9.2 hrs
7.5 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$807,000 – $976,000
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