421 Allen Rd is a 2,510 square foot house on a 19.2 acre lot with 2 bedrooms and 2.5 bathrooms. Based on Redfin's Woodside data, we estimate the home's value is $3,072,193.
Single-familyProperty Type
1977Year Built
19.2 acresLot Size
$1,224Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$3,072,193
$570K since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 20.7% lower than the average sale price ($3.88M) 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
$2,714 (+1.2%)
$51,814 + $207,172
$258,986
2024
$2,683 (+1.5%)
$50,799 + $203,110
$253,909
2023
$2,642 (+2.9%)
$49,803 + $199,128
$248,931
2022
$2,568 (+1.4%)
$48,827 + $195,224
$244,051
2021
$2,532 (+0.7%)
$47,870 + $191,397
$239,267
2020
$2,516 (+1.1%)
$46,932 + $187,645
$234,577
2019
$2,487 (+5.3%)
$46,451 + $185,721
$232,172
2018
$2,363 (+1.3%)
$45,541 + $182,080
$227,621
2017
$2,334 (+2.4%)
$43,774 + $175,010
$218,784
2016
$2,279 (+0.7%)
$43,774 + $175,010
$218,784
2015
$2,263 (+2.6%)
$42,916 + $171,579
$214,495
2014
$2,206 (+1.2%)
$41,444 + $165,692
$207,136
2012
$2,180 (−16.1%)
$41,257 + $164,944
$206,201
2011
$2,598 (+1.2%)
$40,449 + $161,710
$202,159
2010
$2,568 (+8.5%)
$39,656 + $158,540
$198,196
2009
$2,367 (+1.6%)
$39,360 + $157,356
$196,716
2008
$2,329
$39,454 + $157,730
$197,184
Tax history for 421 Allen Rd
Year
Property tax
Land + Additions
Assessment*
2025
$2,714 (+1.2%)
$51,814 + $207,172
$258,986
2024
$2,683 (+1.5%)
$50,799 + $203,110
$253,909
2023
$2,642 (+2.9%)
$49,803 + $199,128
$248,931
2022
$2,568 (+1.4%)
$48,827 + $195,224
$244,051
2021
$2,532 (+0.7%)
$47,870 + $191,397
$239,267
2020
$2,516 (+1.1%)
$46,932 + $187,645
$234,577
2019
$2,487 (+5.3%)
$46,451 + $185,721
$232,172
2018
$2,363 (+1.3%)
$45,541 + $182,080
$227,621
2017
$2,334 (+2.4%)
$43,774 + $175,010
$218,784
2016
$2,279 (+0.7%)
$43,774 + $175,010
$218,784
2015
$2,263 (+2.6%)
$42,916 + $171,579
$214,495
2014
$2,206 (+1.2%)
$41,444 + $165,692
$207,136
2012
$2,180 (−16.1%)
$41,257 + $164,944
$206,201
2011
$2,598 (+1.2%)
$40,449 + $161,710
$202,159
2010
$2,568 (+8.5%)
$39,656 + $158,540
$198,196
2009
$2,367 (+1.6%)
$39,360 + $157,356
$196,716
2008
$2,329
$39,454 + $157,730
$197,184
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Zoning and permits
Zoning
Permits
RM
Resource Management District
The purposes of this chapter are to carry out the objectives and policies of those San Mateo County General Plan Chapters that fulfill the requirements for State-mandated Open Space and Conservation Elements, as well as other elements adopted as part of the General Plan of San Mateo County, to meet the requirements of Section 65910 of the Government Code of the State of California requiring formulation of an open space zoning ordinance, and to ensure consistency between the General Plan and the zoning ordinance.
Permitted uses
Include but are not limited to:
Religious facility
Restaurant
Hotel / motel
Research & development
Educational/school
Fire house
Golf related
Veterinary clinic
Park & open space
Dec 6, 2013 • Final
Building
Remove the existing composition roof and install a new fiberglass composition roof.
Roofing
Permit history is from public records and may be incomplete or inaccurate. Redfin and its agents make no representations about the property condition or permit status. Buyers should independently verify all information.
Property details
Interior
Bathroom Information
# of Full Baths: 2
# of 1/2 Baths: 1
Heating & Cooling
Heating Type: Central
Room Information
# of Rooms: 9
Exterior
Exterior Information
Construction Type: Wood/Steel
Building Construction Quality: Good
View Information
View: Good
Property Information
Living Sq. Ft: 2,510
Ground Floor Sq. Ft: 1,480
# of Stories: 3
Legal Description: 19.265 AC MOL PARCEL B OF PM VOL 55/72 & PTN OF PAR 2 PM VOL 58/62
Parking & Garage Information
# of Parking Spaces: 2
Lot Information
# of Buildings: 1
Land Sq. Ft: 836,384
Acres: 19.2007
Zoning Code: RM0000
County Use Description: SFR, 5-40 ACRES
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 2
Baths: 2.5
Sq. Ft.: 2,510
Stories: 3.0
Lot Size: 19.2 acres
Style: Single Family Residential
Year Built: 1977
Year Renovated: —
County: San Mateo County
APN: 075330240
Home facts updated by county records on Sep 2, 2026
Around this home
Schools
Ormondale Elementary School
Public K-3 • Assigned • 3.7mi
10/10
Corte Madera School
Public 4-8 • Assigned • 4.1mi
10/10
Woodside High School
Public 9-12 • Assigned • 5.2mi
8/10
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
0.62% chance of being in a wildfire in next 30 years
1/10 Heat Factor
0 hot days expected this year, 0 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
7/10 Air Factor
12 unhealthy days expected this year, 12 days in 30 years
Provided by First Street
Historical weather
Woodside, CA • 94062
Average low and high temperatures (°F)
57
41
58
43
64
46
62
44
67
46
71
49
71
50
76
53
74
53
71
49
59
43
56
42
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 10.7 hours in
June and 5 hours in December, placing it above the
U.S. average for solar exposure.
10.7 hrs
5 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$2.92M – $3.53M
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