21855 Mesa Grande Ter is a 839 square foot house on a 0.39 acre lot with 1 bedroom and 1 bathroom. Based on Redfin's Monte Rio data, we estimate the home's value is $468,810.
Single-familyProperty Type
1915Year Built
0.39 acresLot Size
$559Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$468,810
$14K since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 16.2% lower than the average sale price ($560K) 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
Jun 11, 2016 • Final
Building permit no plan check
Tear off existing roofing and install new Class A composition shingles on a single-family home.
Roofing
Jun 11, 2016 • Final
Building permit no 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
Bathroom Information
# of Full Baths: 1
Room Information
# of Rooms: 2
Exterior
Exterior Information
Building Style Type: L-Shape
Construction Type: Wood/Steel
Building Construction Quality: Poor
Property Information
Subdivision Name: MESA GRANDE ADD 01
Living Sq. Ft: 839
Ground Floor Sq. Ft: 839
Building Sq. Ft: 839
# of Stories: 1
Legal Description: LOT 44-48
Lot Information
# of Buildings: 1
Land Sq. Ft: 16,800
Legal Lot Number: 44-48
Acres: 0.3857
Zoning Code: RR1
County Use Description: SINGLE FAM DWELLING
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 1
Baths: 1.0
Sq. Ft.: 839
Stories: 1.0
Lot Size: 0.39 acres
Style: Single Family Residential
Year Built: 1915
Year Renovated: 1924
County: Sonoma County
APN: 095033007000
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 • 11.6mi
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 84° expected this year, 21 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
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73
52
82
53
78
53
75
49
62
45
58
44
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
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Oct
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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
$446,000 – $540,000
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