21311 Highway 116 is a 863 square foot house on a 0.32 acre lot with 2 bedrooms and 1 bathroom. Based on Redfin's Monte Rio data, we estimate the home's value is $535,710.
Single-familyProperty Type
1928Year Built
0.32 acresLot Size
$621Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$535,710
$5,000 since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 13.5% higher than the average sale price ($472K) 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
$6,187 (+2.2%)
$191,017 + $318,362
$509,379
2024
$6,055 (+1.9%)
$187,272 + $312,120
$499,392
2023
$5,940 (+329.0%)
$183,600 + $306,000
$489,600
2022
$1,385 (+1.1%)
$44,513 + $34,432
$78,945
2021
$1,370 (−3.7%)
$43,641 + $33,757
$77,398
2020
$1,422 (+6.0%)
$42,786 + $33,096
$75,882
2019
$1,342 (+21.5%)
$42,348 + $32,757
$75,105
2018
$1,105 (+3.3%)
$41,518 + $32,115
$73,633
2017
$1,070 (+0.5%)
$39,906 + $30,869
$70,775
2015
$1,065 (+1.4%)
$39,124 + $30,264
$69,388
2014
$1,050 (+0.3%)
$37,783 + $29,227
$67,010
2013
$1,047 (+3.5%)
$37,783 + $29,227
$67,010
2012
$1,012 (+1.4%)
$37,613 + $29,095
$66,708
2011
$998 (+0.7%)
$36,876 + $28,525
$65,401
2010
$990 (−0.4%)
$36,153 + $27,966
$64,119
2009
$994 (−3.5%)
$35,883 + $27,757
$63,640
2007
$1,030
$35,264 + $27,278
$62,542
Tax history for 21311 Highway 116
Year
Property tax
Land + Additions
Assessment*
2025
$6,187 (+2.2%)
$191,017 + $318,362
$509,379
2024
$6,055 (+1.9%)
$187,272 + $312,120
$499,392
2023
$5,940 (+329.0%)
$183,600 + $306,000
$489,600
2022
$1,385 (+1.1%)
$44,513 + $34,432
$78,945
2021
$1,370 (−3.7%)
$43,641 + $33,757
$77,398
2020
$1,422 (+6.0%)
$42,786 + $33,096
$75,882
2019
$1,342 (+21.5%)
$42,348 + $32,757
$75,105
2018
$1,105 (+3.3%)
$41,518 + $32,115
$73,633
2017
$1,070 (+0.5%)
$39,906 + $30,869
$70,775
2015
$1,065 (+1.4%)
$39,124 + $30,264
$69,388
2014
$1,050 (+0.3%)
$37,783 + $29,227
$67,010
2013
$1,047 (+3.5%)
$37,783 + $29,227
$67,010
2012
$1,012 (+1.4%)
$37,613 + $29,095
$66,708
2011
$998 (+0.7%)
$36,876 + $28,525
$65,401
2010
$990 (−0.4%)
$36,153 + $27,966
$64,119
2009
$994 (−3.5%)
$35,883 + $27,757
$63,640
2007
$1,030
$35,264 + $27,278
$62,542
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Permits
Mar 18, 2024 • Final
Building permit no plan check
Replace an existing forced air furnace with a 95% AFUE unit in a single-family home.
HVAC
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: 1
Fireplace Information
# of Fireplaces: 1
Has Fireplace
Room Information
# of Rooms: 4
Exterior
Exterior Information
Construction Type: Wood/Steel
Building Construction Quality: Poor
Property Information
Living Sq. Ft: 863
Building Sq. Ft: 863
# of Stories: 2
Legal Description: TWP 07N RGE 10W SEC 06
Parking & Garage Information
Parking Type: Carport
Garage/Parking Sq. Ft: 300
Garage / Carport Type: Carport
Lot Information
# of Buildings: 1
Land Sq. Ft: 13,939
Acres: 0.32
Zoning Code: RR1
County Use Description: SINGLE FAM DWELLING
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 2
Baths: 1.0
Sq. Ft.: 863
Stories: 2.0
Lot Size: 0.32 acres
Style: Single Family Residential
Year Built: 1928
Year Renovated: 1980
County: Sonoma County
APN: 094070001000
Home facts updated by county records on Aug 13, 2026
Around this home
Schools
Monte Rio Elementary School
Public K-8 • Assigned • 0.3mi
7/10
Analy High School
Public 9-12 • Assigned • 11.3mi
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
2/10 Heat Factor
8 days above 84° expected this year, 22 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
9/10 Air Factor
17 unhealthy days expected this year, 19 days in 30 years
Provided by First Street
Historical weather
Monte Rio, CA • 95462
Average low and high temperatures (°F)
59
40
60
43
69
44
66
46
74
49
75
51
73
52
82
53
78
53
75
49
62
45
58
44
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 10.6 hours in
June and 4.9 hours in December, placing it above the
U.S. average for solar exposure.
10.6 hrs
4.9 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$509,000 – $617,000
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