21459 Alpine Ter is a 1,024 square foot house on a 4,080 square foot lot with 1 bedroom and 1 bathroom. - it last sold on May 29, 1997 for $118,000. Based on Redfin's Monte Rio data, we estimate the home's value is $485,441.
Single-familyProperty Type
1964Year Built
4,080 sq ftLot Size
$474Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$485,441
$367K since sold in May 1997$22K since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 1.1% higher than the average sale price ($480K) 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
Jul 24, 2019 • Final
Building permit no plan check
Install a new heat pump.
Heat pump
HVAC
Jun 11, 2016 • Final
Building history record
Work on a gas line.
Gas
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: 3
Exterior
Exterior Information
Building Style Type: Square Design
Construction Type: Wood/Steel
Building Construction Quality: Fair
Property Information
Subdivision Name: TIER M/MONTE RIO PARK
Living Sq. Ft: 1,024
Ground Floor Sq. Ft: 1,024
Building Sq. Ft: 1,024
# of Stories: 1
Legal Description: LOT 12,13
Lot Information
# of Buildings: 1
Land Sq. Ft: 4,080
Legal Lot Number: 12,13
Acres: 0.0937
Zoning Code: RR1
County Use Description: SINGLE FAM DWELLING
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 1
Baths: 1.0
Sq. Ft.: 1,024
Stories: 1.0
Lot Size: 4,080 square feet
Style: Single Family Residential
Year Built: 1964
Year Renovated: 1964
County: Sonoma County
APN: 095133010000
Home facts updated by county records on Aug 13, 2026
Around this home
Schools
Monte Rio Elementary School
Public K-8 • Assigned • 0.6mi
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
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
$462,000 – $559,000
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