9940 Martin Rd is a 2,312 square foot multi-family home on a 0.55 acre lot with 5 bedrooms and 3 bathrooms. Based on Redfin's Windsor data, we estimate the home's value is $908,264.
Multi-familyProperty Type
1978Year Built
0.55 acresLot Size
$393Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$908,265
$35K since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 12.2% lower than the average sale price ($1.03M) 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
$3,710 (+2.1%)
$68,967 + $203,327
$272,294
2024
$3,633 (+1.9%)
$67,615 + $199,341
$266,956
2023
$3,566 (+1.9%)
$66,290 + $195,433
$261,723
2022
$3,500 (+1.6%)
$64,991 + $191,601
$256,592
2021
$3,445 (−1.8%)
$63,717 + $187,845
$251,562
2020
$3,508 (+0.3%)
$62,468 + $184,162
$246,630
2019
$3,499 (+1.4%)
$61,828 + $182,274
$244,102
2018
$3,450 (+0.7%)
$60,616 + $178,700
$239,316
2017
$3,425 (+9.2%)
$58,263 + $171,762
$230,025
2015
$3,136 (+1.4%)
$57,121 + $168,395
$225,516
2014
$3,093
$55,161 + $162,617
$217,778
2013
$3,095 (+1.3%)
$55,161 + $162,617
$217,778
2012
$3,056 (+1.6%)
$54,912 + $161,883
$216,795
2011
$3,009 (+2.1%)
$53,836 + $158,709
$212,545
2010
$2,946 (+0.6%)
$52,781 + $155,598
$208,379
2009
$2,929 (+3.7%)
$52,387 + $154,436
$206,823
2007
$2,825
$51,483 + $151,768
$203,251
Tax history for 9940 Martin Rd
Year
Property tax
Land + Additions
Assessment*
2025
$3,710 (+2.1%)
$68,967 + $203,327
$272,294
2024
$3,633 (+1.9%)
$67,615 + $199,341
$266,956
2023
$3,566 (+1.9%)
$66,290 + $195,433
$261,723
2022
$3,500 (+1.6%)
$64,991 + $191,601
$256,592
2021
$3,445 (−1.8%)
$63,717 + $187,845
$251,562
2020
$3,508 (+0.3%)
$62,468 + $184,162
$246,630
2019
$3,499 (+1.4%)
$61,828 + $182,274
$244,102
2018
$3,450 (+0.7%)
$60,616 + $178,700
$239,316
2017
$3,425 (+9.2%)
$58,263 + $171,762
$230,025
2015
$3,136 (+1.4%)
$57,121 + $168,395
$225,516
2014
$3,093
$55,161 + $162,617
$217,778
2013
$3,095 (+1.3%)
$55,161 + $162,617
$217,778
2012
$3,056 (+1.6%)
$54,912 + $161,883
$216,795
2011
$3,009 (+2.1%)
$53,836 + $158,709
$212,545
2010
$2,946 (+0.6%)
$52,781 + $155,598
$208,379
2009
$2,929 (+3.7%)
$52,387 + $154,436
$206,823
2007
$2,825
$51,483 + $151,768
$203,251
*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
ER
Estate Residential Zone
The ER zone is intended for areas suitable for single-unit dwellings on larger parcels. Multi-unit dwellings may be allowed in compliance with State law. The allowable density ranges from 0.2 to 3 dwelling units per acre. The ER zone is consistent with the Estate Residential ER land use designation in the General Plan.
Permitted uses
Include but are not limited to:
Agriculture
Livestock production
Housing-Group
Housing-Single unit
Housing-Multiple units
Housing-Other
Infrastructure
Public service
Jan 21, 2025 • Final
Residential reroof
Remove and replace one layer of composition roofing on a single-family home. Install new shingles.
Roofing
Jun 11, 2016 • Final
Building history record
Construct a second dwelling unit on the property.
ADU
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: 3
Fireplace Information
# of Fireplaces: 2
Has Fireplace
Room Information
# of Rooms: 10
Exterior
Exterior Information
Building Style Type: U-Shape
Construction Type: Wood/Steel
Building Construction Quality: Average
Property Information
Living Sq. Ft: 2,312
Building Sq. Ft: 3,442
# of Stories: 1
Legal Description: 90 FM 66-020-75 # CHG PER MD
Parking & Garage Information
Parking Type: Attached Garage
Garage/Parking Sq. Ft: 1,130
Garage / Carport Type: Attached
Lot Information
# of Buildings: 1
Land Sq. Ft: 23,958
Legal Lot Number: 4
Acres: 0.55
Zoning Code: CITYWI
County Use Description: 2 SINGLE FAM DWELL
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 5
Baths: 3.0
Sq. Ft.: 2,312
Stories: 1.0
Lot Size: 0.55 acres
Style: Multi-Family (2-4 Unit)
Year Built: 1978
Year Renovated: 1978
County: Sonoma County
APN: 066021021000
Home facts updated by county records on Aug 13, 2026
Around this home
Schools
Brooks Elementary School
Public 3-5 • Assigned • 1.0mi
3/10
Windsor Middle School
Public 6-8 • Assigned • 1.4mi
6/10
Windsor High School
Public 9-12 • Assigned • 1.2mi
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
0.15% chance of being in a wildfire in next 30 years
4/10 Heat Factor
7 days above 92° expected this year, 16 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
9/10 Air Factor
16 unhealthy days expected this year, 17 days in 30 years
Provided by First Street
Historical weather
Windsor, CA • 95492
Average low and high temperatures (°F)
62
39
63
43
72
45
70
47
78
51
80
53
79
53
87
53
84
54
78
50
64
44
58
42
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 11.2 hours in
June and 4.9 hours in December, placing it above the
U.S. average for solar exposure.
11.2 hrs
4.9 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$863,000 – $1.05M
Reach more buyers when you sell with Redfin. Save up to $9,083 in fees.3 minutes to get started.