21791 Highway 116 is a 1,173 square foot house on a 9,270 square foot lot with 3 bedrooms and 2 bathrooms. - it last sold on September 14, 2020 for $380,000. Based on Redfin's Monte Rio data, we estimate the home's value is $450,583.
Single-familyProperty Type
1934Year Built
9,270 sq ftLot Size
$384Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$450,583
$71K since sold in September 2020$79K since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 24.6% lower than the average sale price ($597K) of 6 comparable homes.
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Permits
Oct 18, 2024 • Final
Building permit with plan check
Electrical
Plumbing
Remodel
Oct 18, 2024 • Final
Building permit with plan check
Remodel
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
Basement Information
Basement Sq. Ft: 312
Bathroom Information
# of Full Baths: 2
Fireplace Information
# of Fireplaces: 1
Has Fireplace
Room Information
# of Rooms: 5
Exterior
Exterior Information
Construction Type: Wood/Steel
Building Construction Quality: Average
Property Information
Subdivision Name: MONTE CRISTO SUB #1
Living Sq. Ft: 1,173
Ground Floor Sq. Ft: 1,173
Building Sq. Ft: 1,173
# of Stories: 1
Legal Description: MONTE CRISTO SUB #1 LOTS 17 & 18
Parking & Garage Information
Parking Type: Detached Garage
Garage/Parking Sq. Ft: 220
Garage / Carport Type: Detached
Lot Information
# of Buildings: 1
Land Sq. Ft: 9,270
Legal Lot Number: 17
Acres: 0.2128
Zoning Code: RR1
County Use Description: SINGLE FAM DWELLING
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 3
Baths: 2.0
Sq. Ft.: 1,173
Stories: 1.0
Lot Size: 9,270 square feet
Style: Single Family Residential
Year Built: 1934
Year Renovated: 2000
County: Sonoma County
APN: 094055008000
Home facts updated by county records on Aug 13, 2026
Around this home
Schools
Monte Rio Elementary School
Public K-8 • Assigned • 0.5mi
7/10
Analy High School
Public 9-12 • Assigned • 11.5mi
8/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Climate risks
5/10 Flood Factor
Estimated 11-17% chance 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
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43
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49
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73
52
82
53
78
53
75
49
62
45
58
44
Jan
Feb
Mar
Apr
May
Jun
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Aug
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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
$429,000 – $519,000
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