877 Hardstone Ct is a 2,459 square foot house on a 0.92 acre lot with 4 bedrooms and 2.5 bathrooms. - it last sold on November 19, 1986 for $272,700. Based on Redfin's Santa Rosa data, we estimate the home's value is $1,205,671.
Single-familyProperty Type
1986Year Built
0.92 acresLot Size
$490Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$1,205,671
$933K since sold in November 1986$12K since September
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 10.9% higher than the average sale price ($1.09M) 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 28, 2026 • Active
Residential plumbing
Replace a water heater in the same location.
Plumbing
Water heater
Apr 18, 2022 • Final
Residential plumbing
Replace the water service line from the meter to the home. No sidewalk encroachment is included in this work.
Plumbing
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: 2
# of 1/2 Baths: 1
Fireplace Information
# of Fireplaces: 2
Has Fireplace
Room Information
# of Rooms: 7
Exterior
Exterior Information
Building Style Type: U-Shape
Construction Type: Wood/Steel
Building Construction Quality: Good
Property Information
Subdivision Name: CASTLEROCK
Living Sq. Ft: 2,459
Ground Floor Sq. Ft: 2,459
Building Sq. Ft: 2,459
# of Stories: 1
Parking & Garage Information
Garage/Parking Sq. Ft: 832
Lot Information
# of Buildings: 1
Land Sq. Ft: 40,075
Legal Lot Number: 40
Acres: 0.92
Zoning Code: CITYSR
County Use Description: SINGLE FAM DWELLING
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 4
Baths: 2.5
Sq. Ft.: 2,459
Stories: 1.0
Lot Size: 0.92 acres
Style: Single Family Residential
Year Built: 1986
Year Renovated: 1987
County: Sonoma County
APN: 013350040000
Home facts updated by county records on Aug 13, 2026
Around this home
Schools
Spring Lake Charter
Charter K-8 • Assigned • 0.7mi
6/10
Montgomery High School
Public 9-12 • Assigned • 1.6mi
7/10
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
0.77% chance of being in a wildfire in next 30 years
4/10 Heat Factor
7 days above 93° expected this year, 15 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
10/10 Air Factor
21 unhealthy days expected this year, 21 days in 30 years
Provided by First Street
Historical weather
Santa Rosa, CA • 95405
Average low and high temperatures (°F)
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86
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82
57
78
52
64
45
59
43
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Sun exposure
In this area, properties receive around 11.2 hours in
June and 4.9 hours in December, placing it above the
U.S. average for solar exposure.
11.2 hrs
4.9 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$1.15M – $1.39M
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