539 Irwin Ln is a 1,793 square foot house on a 1.88 acre lot with 6 bedrooms and 4 bathrooms. - it last sold on August 09, 2001 for $530,000. Based on Redfin's Santa Rosa data, we estimate the home's value is $1,090,117.
Single-familyProperty Type
1979Year Built
1.88 acresLot Size
$608Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$1,090,117
$560K since sold in August 2001$6,000 since October
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 24.7% higher than the average sale price ($874K) 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.
Zoning and permits
Zoning
Permits
RR B6 2
VOH
Rural Residential - B6 Combining District - 2 Acres Per Dwelling Unit
The RR zone preserves the rural character and amenities in areas best utilized for low-density residential development. Rural residential uses are intended to take precedence over agricultural uses. Agricultural service uses are not allowed. The adopted zoning maps shall specify the maximum permitted density, determined by gross acreage for all residential uses. Minimum front, side and rear yard requirements and the minimum parcel or lot size, if not otherwise specified, shall conform to the base district with which the B6 district is combined unless specifically approved otherwise by the planning commission.
Zone overlays
Valley Oak Habitat Combining District
Permitted uses
Include but are not limited to:
Greenhouse / nursery
Livestock production
Housing-Group
Housing-Single unit
Agriculture-Cropland
Jan 9, 2026 • Final
Building permit no plan check
Remove and replace an existing furnace in an indoor closet with a new high-efficiency furnace in the same location.
HVAC
Oct 9, 2023 • Final
Building permit with plan check
Electrical
Electric meter
Solar
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: 4
Heating & Cooling
Heating Type: Forced Air
Fireplace Information
# of Fireplaces: 2
Has Fireplace
Room Information
# of Rooms: 14
Exterior
Exterior Information
Physical Condition: Excellent
Foundation Type: Raised W/Crawlspace
Building Style Type: U-Shape
Construction Type: Wood/Steel
Building Construction Quality: Good
Exterior Wall: Wood Siding
Property Information
Living Sq. Ft: 1,793
Ground Floor Sq. Ft: 1,793
Building Sq. Ft: 2,603
# of Stories: 1
Legal Description: 78 FORM 130-222-85 & PT TO 44 PM 5832
Parking & Garage Information
# of Parking Spaces: 2
Parking Type: Attached Garage
Garage/Parking Sq. Ft: 483
Garage / Carport Type: Attached
Lot Information
# of Buildings: 1
Land Sq. Ft: 81,893
Legal Lot Number: 1
Acres: 1.88
Zoning Code: RR2
County Use Description: RURAL RESID-1 RESID
Utility Information
Sewer Type: Septic
Water Service Type: Commercial
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 6
Baths: 4.0
Sq. Ft.: 1,793
Stories: 1.0
Lot Size: 1.88 acres
Style: Single Family Residential
Year Built: 1979
Year Renovated: 1980
County: Sonoma County
APN: 130223043000
Home facts updated by county records on Oct 28, 2026
Around this home
Schools
K - 12
Preschool & daycare
Oak Grove Elementary School
Public K • Assigned • 3.9mi
Oak Grove Elementary/Willowside Middle School
Charter 1-8 • Assigned • 0.9mi
6/10
Analy High School
Public 9-12 • Assigned • 2.5mi
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
3/10 Fire Factor
0.31% chance of being in a wildfire in next 30 years
4/10 Heat Factor
7 days above 90° expected this year, 16 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
9/10 Air Factor
19 unhealthy days expected this year, 19 days in 30 years
Provided by First Street
Historical weather
Santa Rosa, CA • 95401
Average low and high temperatures (°F)
63
39
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42
71
45
69
46
76
50
78
52
80
53
85
53
81
56
74
50
65
44
59
42
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 11.1 hours in
June and 4.9 hours in December, placing it above the
U.S. average for solar exposure.
11.1 hrs
4.9 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$1.04M – $1.25M
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