21506 Rio Vista Ter is a 1,142 square foot house on a 4,250 square foot lot with 3 bedrooms and 2 bathrooms. - it last sold on August 09, 2000 for $146,000. Based on Redfin's Monte Rio data, we estimate the home's value is $511,195.
Single-familyProperty Type
1912Year Built
4,250 sq ftLot Size
$448Est. Price/Sq.Ft.
1 car garageParking
Source:Public Records
Redfin Estimate
$511,195
$365K since sold in August 2000$20K since July
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 4.6% lower than the average sale price ($536K) 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
Apr 16, 2026 • Final
Building permit no plan check
Electrical
Electric meter
Jun 11, 2016 • Final
Building history record
Work on electrical.
Electrical
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: 378
Bathroom Information
# of Full Baths: 2
Room Information
# of Rooms: 5
Exterior
Exterior Information
Building Style Type: U-Shape
Construction Type: Wood/Steel
Building Construction Quality: Poor
Property Information
Subdivision Name: MONTE RIO PARK
Living Sq. Ft: 1,142
Ground Floor Sq. Ft: 556
Building Sq. Ft: 1,142
# of Stories: 2
Legal Description: LOT 29
Parking & Garage Information
Parking Type: Detached Garage
Garage/Parking Sq. Ft: 266
Garage / Carport Type: Detached
Lot Information
# of Buildings: 1
Land Sq. Ft: 4,250
Legal Lot Number: 29
Legal Block Number: D
Acres: 0.0976
Zoning Code: RR1
County Use Description: SINGLE FAM DWELLING
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 3
Baths: 2.0
Sq. Ft.: 1,142
Stories: 2.0
Lot Size: 4,250 square feet
Style: Single Family Residential
Year Built: 1912
Year Renovated: 1912
County: Sonoma County
APN: 095157001000
Home facts updated by county records on Aug 13, 2026
Around this home
Schools
Places
Transit
Monte Rio Elementary School
Public K-8 • Assigned • 0.4mi
7/10
Analy High School
Public 9-12 • Assigned • 10.8mi
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
1/10 Fire Factor
Unlikely to be in a wildfire in next 30 years
2/10 Heat Factor
8 days above 86° expected this year, 23 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
69
44
66
46
74
49
75
51
73
52
81
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
$486,000 – $588,000
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