Public Remarks: LOCATION LOCATION!! 4th & Mapleton! Perfectly situated 1 block to Mt. Sanitas and Redrocks trailhead, 5 blocks to Pearl Street. Sun filled unit perfect for the minimalist. Wood floors, remodeled kitchen with tile backsplash, Corian countertops, Bosch gas range, double oven, built in corner hutch in LR, Two patios, one assigned off street parking spot. Laundry on site. Historical building - used to be nurses dormitory for the Sanitarium. Currently leased through July 31st.
This charming sun filled unit is a must see! Lives larger than the square footage with walls of windows & an open, livable floorplan. Perfectly located 1 block to Sanitas/Redrocks & 5 blocks to Pearl Street. Live a part of Boulder's history in the most coveted neighborhood in town. This condo has a private entrance, oversized flagstone patio with surrounding gardens, second patio off the kitchen, built-ins, off street parking, laundry & more. This is a very unique condo in an ideal location.
IRES as Distributed by MLS Grid #497191
Sep 29, 2006
Sold
$175,000
$482/sq ft
Jun 18, 2006
Listed
$212,000
$584/sq ft
IRES as Distributed by MLS Grid #487060
Jun 17, 2006
Listing Removed
—
Apr 7, 2006
Listed
$225,000
$620/sq ft
Public Records
Jun 3, 1999
Sold
$100,000
$275/sq ft
Year
Property tax
Land + Additions
Assessment*
2025
$3,084 (+36.0%)
$32,344
2024
$2,268 (+1.8%)
$32,344
2023
$2,228 (−5.2%)
$25,802
2022
$2,350 (+1.5%)
$29,487
2021
$2,316 (−1.3%)
$25,305
2020
$2,347 (+1.6%)
$26,033
2019
$2,311 (+23.5%)
$26,963
2018
$1,872 (+3.2%)
$26,963
2017
$1,813 (+15.0%)
$21,586
2016
$1,577 (+5.6%)
$21,586
2015
$1,494 (+18.0%)
$18,228
2014
$1,266 (+2.2%)
$14,726
2013
$1,238 (−2.5%)
$14,726
2012
$1,270 (+0.9%)
$14,726
2011
$1,259 (+3.0%)
$15,164
2010
$1,222 (+7.1%)
$15,164
2009
$1,141
$15,120
Tax history for 417 Mapleton Ave Unit C
Year
Property tax
Land + Additions
Assessment*
2025
$3,084 (+36.0%)
$32,344
2024
$2,268 (+1.8%)
$32,344
2023
$2,228 (−5.2%)
$25,802
2022
$2,350 (+1.5%)
$29,487
2021
$2,316 (−1.3%)
$25,305
2020
$2,347 (+1.6%)
$26,033
2019
$2,311 (+23.5%)
$26,963
2018
$1,872 (+3.2%)
$26,963
2017
$1,813 (+15.0%)
$21,586
2016
$1,577 (+5.6%)
$21,586
2015
$1,494 (+18.0%)
$18,228
2014
$1,266 (+2.2%)
$14,726
2013
$1,238 (−2.5%)
$14,726
2012
$1,270 (+0.9%)
$14,726
2011
$1,259 (+3.0%)
$15,164
2010
$1,222 (+7.1%)
$15,164
2009
$1,141
$15,120
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Public record
Public record
Zoning
Beds
1
Baths
1
Stories
1
Lot width
—
Lot depth
—
Lot size
—
Year renovated
1906
Sq. Ft.
363
Year built
1906
Style
Condo/Co-op
County
Boulder County
APN
R0140894
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Sep 2, 2026.
RL-1
Residential-Low 1 District
Primarily single-family detached dwelling units with some duplexes and attached dwelling units at low to very low residential densities.
Permitted uses
Include but are not limited to:
Religious facility
Housing-Multiple units
Educational/school
Recreation
Agriculture-Cropland
Park & open space
Property details
Parking
Parking Features
Covered Spaces: 0
Garage Spaces: 0
Interior
Bathroom Information
Bathrooms (Full): 0
Bathrooms (Half): 0
Bathrooms (Three Quarter): 1
Bedroom Information
Bedrooms Total: 1
Heating & Cooling
Cooling: Yes
Heating: Yes
Hot Water, Radiator, Common Heat Source
Interior Features
Accessibility Features: Level Lot, Level Drive, No Stairs, Main Floor Bath, Main Level Bedroom, Stall Shower
Gas Range/Oven, Dishwasher, Refrigerator
Flooring: Wood Floors
Laundry Features: Common Area
Room Information
Basement: None
Exterior
Exterior Features
Fencing: Partial, Wood
Patio and Porch Features: Patio
Roof: Rubber, Flat
Land Information
Road Surface Type: Paved
Lot Information
Horse(s): No
Lot Features: Sidewalks, Level, Historic District
Road Frontage Type: City Street
Zoning: PUD
Property Information
Property Attached: Yes
Property Type: Attached Dwelling
Property Sub Type: Attached Dwelling
Waterfront: No
Subdivision Information
Subdivision Name: Mapleton Avenue Condominiums
MLS Area Major: Boulder
Building Information
Above Grade Finished Area: 363
Below Grade Finished Area: 0
Building Area Total: 363
Common Walls: No One Below, End Unit
Construction Materials: Brick/Brick Veneer
Financial
Tax Information
Parcel Number: R0140894
Tax Annual Amount: 1813
Tax Year: 2017
Utilities
Utility Information
Utilities: Natural Gas Available
Gas: Natural Gas,Xcel
Sewer: City Sewer
Location
HOA Information
Association: Yes
Association Fee: 224
Association Fee Frequency: Monthly
Association Fee Includes: Common Amenities, Trash, Snow Removal, Maintenance Grounds, Management, Maintenance Structure, Water/Sewer, Heat, Hazard Insurance
Community Features: Park
School Information
High School District: Boulder Valley Dist RE2
Elementary School: Whittier
Middle or Junior School: Casey
High School: Boulder
Location Information
Directions: From Broadway and Mapleton: west on Mapleton to 417 on north side of street. Unit C is on the northwest side of the building. Walk along path on west side of building around back
Unparsed Address: 417 Mapleton Ave C Boulder CO 80304
Street Number: 417
Street Name: Mapleton
Street Suffix: Ave
UnitNumber: C
City: Boulder
State or Province: CO
County or Parish: Boulder
Country: US
Postal Code: 80304
Coordinates: -105.291038,40.020849
Latitude: 40.020849
Longitude: -105.291038
Public facts
Beds: 1
Baths: 1.0
Sq. Ft.: 363
Stories: 1.0
Lot Size: —
Style: Condo/Co-op
Year Built: 1906
Year Renovated: 1906
County: Boulder County
APN: R0140894
Home facts updated by county records on Sep 2, 2026
Other
Listing Information
Attribution Contact: 3034497000
Close Price: $380,000
Photos Count: 23
Special Listing Conditions: Private Owner
Standard Status: Closed
Listing Date Information
Close Date: Friday, June 29, 2018
Cumulative Days on Market: 52
Days on Market: 38
Listing Contract Date: Wednesday, May 23, 2018
Modification Timestamp: Tuesday, July 30, 2024 7:09 PM
Home Information
Entry Level: 1
Entry Location: 1st Floor
Structure Type: Outside Entry
Window Features: Window Coverings
Year Built: 1906
Around this home
Schools
Whittier Elementary School
Public K-5 • Assigned • 1.1mi
6/10
Casey Middle School
Public 6-8 • Assigned • 0.6mi
5/10
Boulder High School
Public 9-12 • Assigned • 1.0mi
9/10
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
4/10 Fire Factor
2% chance of being in a wildfire in next 30 years
3/10 Heat Factor
7 days above 90° expected this year, 19 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
2/10 Air Factor
2 unhealthy days expected this year, 2 days in 30 years
Provided by First Street
Historical weather
Boulder, CO • 80304
Average low and high temperatures (°F)
44
22
51
29
63
40
64
40
70
47
83
57
86
62
84
60
79
54
67
45
54
33
53
33
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 10.5 hours in
June and 6 hours in December, placing it above the
U.S. average for solar exposure.
10.5 hrs
6 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$414,000 – $501,000
Reach more buyers when you sell with Redfin. Save up to $4,351 in fees.3 minutes to get started.