409 Semillon Ln is a 1,884 square foot condo with 3 bedrooms and 2.5 bathrooms. Based on Redfin's Santa Rosa data, we estimate the home's value is $833,917.
CondoProperty Type
2022Year Built
$443Est. Price/Sq.Ft.
2 car garageParking
Source:Public Records
Redfin Estimate
$833,917
$133K since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 27.7% higher than the average sale price ($653K) 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
R-1-6
Single-Family Residential District - 6,000 sq ft
The R-1 zoning district is applied to areas of the City intended to be maintained as residential neighborhoods comprised of detached and attached single-family houses, clustered Residential hillside projects, and small multi-family projects, together with compatible accessory uses. The maximum allowable density ranges from two to 13 dwellings per acre, with the specific allowable density for each parcel shown on the zoning map by a numerical suffix to the R-1 map symbol see Section 20-22.040. The R-1 zoning district implements and is consistent with the Residential Very Low Density where residential clustered on hillsides is desirable, Low Density or Open Space, Low Density, and Medium Low Density land use classifications of the General Plan.
Permitted uses
Include but are not limited to:
Agriculture-Other
Day care facility
Healthcare-Other
Housing-Single unit
Housing-Student
Housing-Other
Infrastructure-Other
Housing-Mobile home park
Nov 7, 2023 • Final
Residential addition-alteration
Install a roof-mounted solar photovoltaic system on a residential building. The project includes installing a new electrical subpanel and load center.
Electrical
Solar
Oct 19, 2023 • Final
Residential new
Construct a new three-story multifamily residential building containing five units. The project includes attached garages, patios, and decks for each unit.
Addition
New construction
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
Room Information
# of Rooms: 7
Exterior
Exterior Information
Building Construction Quality: Good
Property Information
Subdivision Name: ROUND BARN VILLAGE CONDOS
Living Sq. Ft: 1,884
Building Sq. Ft: 2,365
# of Stories: 3
Legal Description: 2022 ROUND BARN VILLAGE CONDO BLDG 22 UNIT 125
Parking & Garage Information
Parking Type: Attached Garage
Garage/Parking Sq. Ft: 481
Garage / Carport Type: Attached
Lot Information
# of Buildings: 1
Land Sq. Ft: 1,884
Legal Lot Number: 1
Acres: 0.0433
County Use Description: CONDOMINIUM UNIT
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 3
Baths: 2.5
Sq. Ft.: 1,884
Stories: 3.0
Lot Size: —
Style: Condo/Co-op
Year Built: 2022
Year Renovated: 2023
County: Sonoma County
APN: 173850042000
Home facts updated by county records on Aug 13, 2026
Around this home
Schools
Hidden Valley Elementary Satellite School
Public K-6 • Assigned • 1.4mi
8/10
Santa Rosa Middle School
Public 7-8 • Assigned • 2.5mi
2/10
Santa Rosa High School
Public 9-12 • Assigned • 1.9mi
6/10
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
4/10 Heat Factor
7 days above 92° 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 • 95403
Average low and high temperatures (°F)
62
39
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43
71
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77
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78
53
86
54
82
54
78
50
64
44
59
42
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
94/ 100
Exceptional sunlight
Sunscore
This home ranks in the top 12% for direct sun exposure in Santa Rosa. There appears to be minimal shading by surrounding buildings, terrain, and vegetation.
9.8 hrs
5.9 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$793,000 – $960,000
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