1855 - 1875 Petaluma Hill Rd, Santa Rosa, CA 95404
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About this home
Excellent opportunity to acquire a 39-unit apartment complex on over two acres in Santa Rosa, offering immediate cash flow with significant value-add potential. Colgan Creek Cottages features a diverse unit mix comprised of one (1) 3-bedroom, 2-bath single-family home, one (1) 3-bedroom cottage, four (4) 2-bedroom units, thirteen (13) 1-bedroom units, and twenty (20) studios, spread across multiple parcels. Unlike traditional apartment buildings, most residences are individual cottages with no shared wallsan appealing layout that enhances privacy and drives tenant demand. Amenities include an on-site laundry room with attached workshop and office, three storage buildings, ample on-site parking, and a utility structure that allows for substantial cost recovery through tenant bill-backs. Situated in one of the fastest-growing submarkets of Santa Rosa, the complex enjoys historically strong occupancy with minimal turnover. Significant upside exists through unit renovations and upgrades, while the large lot provides additional development potential through new construction or ADUs. Positioned as an attractive alternative to higher-priced new construction, this investment combines immediate cash flow with multiple pathways for long-term value creation.
Multi-familyProperty Type
1939Year Built
2.35 acresLot Size
40 spacesParking
Listed by Steven Level•DRE #01184232• Berkshire Hathaway
Sale and tax history for 1855 - 1875 Petaluma Hill Rd
Sale History
Tax History
Date
Event
Price
Public Records
Aug 6, 2026
Sold
$500,000
BAREIS #326007111
Aug 6, 2026
Sold
$5,200,000
Jun 16, 2026
Relisted
—
May 26, 2026
Contingent
—
Mar 9, 2026
Price Changed
$5,995,000
Jan 29, 2026
Listed
$6,250,000
BAREIS #325080926
Nov 11, 2025
Price Changed
*
Sep 9, 2025
Listed
*
Year
Property tax
Land + Additions
Assessment*
2025
$1,803 (+1.2%)
$88,621 + $64,779
$153,400
2024
$1,782 (−1.1%)
$86,884 + $63,509
$150,393
2023
$1,802 (+3.7%)
$85,181 + $62,264
$147,445
2022
$1,738 (+1.3%)
$83,511 + $61,044
$144,555
2021
$1,715 (+2.9%)
$81,874 + $59,848
$141,722
2020
$1,667 (+1.2%)
$80,269 + $58,675
$138,944
2019
$1,647 (+0.9%)
$79,446 + $58,074
$137,520
2018
$1,633 (+2.4%)
$77,889 + $56,936
$134,825
2017
$1,594 (+5.1%)
$74,865 + $54,726
$129,591
2015
$1,516 (+3.6%)
$73,398 + $53,653
$127,051
2014
$1,464 (+1.4%)
$70,880 + $51,813
$122,693
2013
$1,444 (+1.9%)
$70,880 + $51,813
$122,693
2012
$1,418 (+2.2%)
$70,560 + $51,579
$122,139
2011
$1,387 (+2.7%)
$69,177 + $50,568
$119,745
2010
$1,350
$67,821 + $49,577
$117,398
2009
$1,351 (+4.2%)
$67,315 + $49,207
$116,522
2007
$1,296
$66,152 + $48,357
$114,509
Public record
Public record
Zoning
Permits
Beds
3
Baths
1
Stories
1
Lot width
—
Lot depth
—
Lot size
7,405 Sq. Ft.
Year renovated
1975
Sq. Ft.
1,192
Year built
1939
Style
Single Family Residential
County
Sonoma County
APN
044021073000
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Aug 18, 2026.
R-3-30
Multi-Family Residential District - 30 du per acre
The R-3 zoning districts are applied to areas of the City appropriate for residential neighborhoods with medium and higher residential densities, to provide home rental and ownership opportunities, and to provide a full range of choices in housing types to improve access to affordable housing. The maximum allowable density ranges from 8 to 30 dwellings per acre, with the specific allowable density for each parcel shown on the zoning map by a numerical suffix to the R-3 map symbol see Section 20-22.040. Densities of more than 30 dwellings per acre may be allowed within the Mixed Use land use designation of the General Plan; The R-3 zoning districts implement and are consistent with the Residential Medium Density and Medium High Density land use classifications of the General Plan.
Permitted uses
Include but are not limited to:
Agriculture-Other
Day care facility
Healthcare-Other
Housing-Group
Housing-Multiple units
Housing-Student
Housing-Other
Infrastructure-Other
Housing-Mobile home park
Jun 28, 2015 • Final
Residential plumbing
Install a backflow prevention device.
Plumbing
Jun 28, 2015 • Final
Residential addition-alteration
Install a new composition roof overlay on a single-family home.
Roofing
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
Parking
Parking & Garage Information
Parking Total: 40
Parking Features: Off Street, Open
Interior
Heating & Cooling
Cooling: None
Heating: Wall Furnace
Interior Features
Laundry Features: Coin Operated, In Common Area
Exterior
Exterior Features
Roof: Composition, Shingle
Property Information
Property Type: Residential Income
Property Sub Type: 5 or More Units
Lot Information
Lot Size Square Feet: 102,366
Lot Size Acres: 2.35
Lot Size Source: Assessor Agent-Fill
Lot Features: Shape Irregular
Power Production Information
Type: None
Size: 0.00
Year Install: 0
Utilities
Utilities Information
Sewer: Public Sewer
Location
Multi-Unit Information
# of Units (Total): 39
# of Units (Studio): 20
Unit 1 Information
Type: Apartment
# of Units: 13
Unit 2 Information
Type: Apartment
# of Units: 4
Unit 3 Information
# of Units: 2
HOA Information
Association YN: No
Public facts
Beds: 3
Baths: 1.0
Sq. Ft.: 1,192
Stories: 1.0
Lot Size: 7,405 square feet
Style: Single Family Residential
Year Built: 1939
Year Renovated: 1975
County: Sonoma County
APN: 044021073000
Home facts updated by county records on Aug 18, 2026
Around this home
Schools
Kawana Elementary School
Public K-6 • Assigned • 0.3mi
4/10
Montgomery High School
Public 9-12 • Assigned • 1.8mi
7/10
Provided by GreatSchools
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 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)
63
41
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77
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79
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86
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83
55
79
51
65
46
60
44
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
86/ 100
Very good sunlight
Sunscore
There appears to be minimal shading by surrounding buildings, terrain, and vegetation.