538 Colgan Ave is a 995 square foot house on a 0.52 acre lot with 2 bedrooms and 1 bathroom. - it last sold on May 02, 1983 for $80,000. Based on Redfin's Santa Rosa data, we estimate the home's value is $563,519.
Single-familyProperty Type
1917Year Built
0.52 acresLot Size
$566Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$563,519
$484K since sold in May 1983$15K since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 1.4% higher than the average sale price ($556K) 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
IL
Light Industrial District
The IL zoning district is applied to areas appropriate for some light industrial uses, as well as commercial service uses and activities that may be incompatible with residential, retail, and or office uses. Residential uses may also be accommodated as part of work live projects. The IL zoning district is consistent with the Light Industry land use classification of the General Plan.
Permitted uses
Include but are not limited to:
Agriculture-Other
Commercial & retail-Other
Housing-Other
Commercial laundry
Industrial-Other
Jul 23, 2019 • Final
Residential electrical
Replace the existing electrical panel with a new service panel.
Electrical
Jun 28, 2015 • Final
Non-residential addition-alteration
Replace the reduced pressure zone backflow preventer.
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: 1
Room Information
# of Rooms: 4
Exterior
Exterior Information
Building Style Type: U-Shape
Construction Type: Wood/Steel
Building Construction Quality: Average
Property Information
Subdivision Name: LLANO DE SANTA ROSA RHO
Living Sq. Ft: 995
Ground Floor Sq. Ft: 995
Building Sq. Ft: 995
# of Stories: 1
Parking & Garage Information
Parking Type: Detached Garage
Garage/Parking Sq. Ft: 396
Garage / Carport Type: Detached
Lot Information
# of Buildings: 1
Land Sq. Ft: 22,840
Acres: 0.5243
Zoning Code: CITYSR
County Use Description: SINGLE FAM DWELLING
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 2
Baths: 1.0
Sq. Ft.: 995
Stories: 1.0
Lot Size: 0.52 acres
Style: Single Family Residential
Year Built: 1917
Year Renovated: 1917
County: Sonoma County
APN: 044011027000
Home facts updated by county records on Aug 13, 2026
Around this home
Schools
Kawana Elementary School
Public K-6 • Assigned • 0.5mi
4/10
Montgomery High School
Public 9-12 • Assigned • 1.8mi
7/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Climate risks
6/10 Flood Factor
Estimated 60-74% chance 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 92° expected this year, 16 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
8/10 Air Factor
15 unhealthy days expected this year, 17 days in 30 years
Provided by First Street
Historical weather
Santa Rosa, CA • 95404
Average low and high temperatures (°F)
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86
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79
51
65
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60
44
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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
$536,000 – $649,000
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