520 S Riverside Ave Unit B is a 1,314 square foot multi-family home on a 1,684 square foot lot with 1 bedroom and 2 bathrooms. - it last sold on December 07, 2007 for $1,300,000.
Multi-familyProperty Type
1987Year Built
1,684 sq ftLot Size
$989Price/Sq.Ft.
Source:Public Records
Redfin Estimate
Unfortunately, we don't have enough data to generate an accurate Estimate at this time.
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Zoning
R-15
Moderate-Density Residential District
The purpose of the Moderate-Density Residential R-15 Zone District is to provide areas for long-term residential purposes, short term vacation rentals, and customary accessory uses. Recreational and institutional uses customarily found in proximity to residential uses are included as conditional uses. Lands in the Moderate-Density Residential R-15 Zone District typically consist of additions to the Aspen Townsite and subdivisions on the periphery of the City. Lands within the Townsite which border Aspen Mountain are also included in the Moderate-Density Residential R-15 Zone District.
Permitted uses
Include but are not limited to:
Housing-Single unit
Housing-Multiple units
Housing-Other
Property details
Interior
Basement Information
Basement Sq. Ft: 574
Basement Finish: Finished
Basement Type: Finished
Heating & Cooling
Heating Fuel Type: Electric
Heating Type: Baseboard Electric
Room Information
# of Rooms: 5
Exterior
Exterior Information
Exterior Wall: Frame Wood/Stucco
Roof Framing Type: Wood
Building Type: Duplex
Property Information
Subdivision Name: SEMPER FI
Living Sq. Ft: 1,314
Adjusted Gross Sq. Ft: 1,314
Ground Floor Sq. Ft: 740
Building Sq. Ft: 1,598
# of Units: 1
# of Stories: 2
Stories Type: 2
Legal Description: SUBDIVISION: SEMPER FI UNIT: B
Parking & Garage Information
Parking Type: Attached Finished Garage
Garage/Parking Sq. Ft: 284
Garage / Carport Type: Attached Finished
Lot Information
# of Buildings: 1
Land Sq. Ft: 1,684
Municipality Name: 1-AFSEA
Acres: 0.0387
County Use Description: DUPLEX CONDO IMPS
Utility Information
Water Service Type: Public Well
Financial
Assessor Information
Assessment Year: 2026
Tax Area: 1-AFSEA
Public facts
Beds: 1
Baths: 2.0
Sq. Ft.: 1,314
Stories: 2.0
Lot Size: 1,684 square feet
Style: Multi-Family (2-4 Unit)
Year Built: 1987
Year Renovated: 1995
County: Pitkin County
APN: R012698
Home facts updated by county records on Oct 20, 2026
Around this home
Schools
K - 12
Preschool & daycare
Aspen Elementary School
Public PreK-4 • Assigned • 2.1mi
6/10
Aspen Middle School
Public 5-8 • Assigned • 2.1mi
8/10
Aspen High School
Public 9-12 • Assigned • 2.1mi
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
1/10 Heat Factor
10 days above 76° expected this year, 26 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
3/10 Air Factor
2 unhealthy days expected this year, 3 days in 30 years
Provided by First Street
Historical weather
Aspen, CO • 81611
Average low and high temperatures (°F)
32°
11°
41°
21°
51°
28°
53°
30°
62°
37°
77°
47°
81°
53°
77°
51°
67°
42°
58°
33°
44°
23°
39°
19°
Jan
Feb
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Oct
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Dec
Sun exposure
In this area, properties receive around 10.4 hours in
June and 6.1 hours in December, placing it above the
U.S. average for solar exposure.
10.4 hrs
6.1 hrs
JuneDecember
Provided by Shadowmap
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