Public Remarks: Perfectly restored historic loft on Mapleton Hill. Ideally located just steps to trails & Pearl Street Mall. Live a part of Boulder's history in the most coveted neighborhood/building in town. Exposed brick walls, gliding wood panel doors, open gourmet kitchen with bar seating, built-ins, oversized back deck, garage, large pantry, remodeled bathroom, laundry in unit, large closet and front balcony with views. This property combines warmth & charm of the past with every modern indulgence.
TownhomeProperty Type
1906Year Built
26 sq ftLot Size
$1,108Est. Price/Sq.Ft.
1 car garageParking
Listed by Sabrina Clauson• Slifer Smith & Frampton-Bldr
Contact: 3034433377
Bought with Sabrina Clauson• Slifer Smith & Frampton-Bldr
Price Reduced! On Mapleton near 4th Street! This is ideal Location! Hardwood floors with beautiful updated kitchen & bath. High ceilings, exposed brick wall make this place a must see. Open floor plan with sliding doors to bedroom and 2 balconies. New paint. Garage included (3rd from East). Close to Mount Sanitas and trails. HOA includes heat. Easy to show.... Bring your buyers. This one won't last.
IRES as Distributed by MLS Grid #303901
Oct 15, 2001
Sold
$315,000
$504/sq ft
Apr 21, 2001
Listed
$319,000
$510/sq ft
Public Remarks
Beautiful 2nd story 1 bedroom, 1 bath victorian condo. Only 2nd resale. Beautifully renovated, high ceilings, exposed brick, hardwood floors, claw tub. 1 car garage (3rd from East end).
Public Records
May 19, 1999
Sold
$234,400
$375/sq ft
Year
Property tax
Land + Additions
Assessment*
2025
$3,553 (+39.8%)
$43,513
2024
$2,541 (+1.8%)
$43,513
2023
$2,497 (−1.6%)
$35,618
2022
$2,538 (+4.9%)
$39,303
2021
$2,421 (−1.6%)
$34,284
2020
$2,461 (−18.9%)
$35,271
2019
$3,036 (+19.0%)
$35,421
2018
$2,551 (+3.2%)
$35,421
2017
$2,471 (−19.4%)
$29,426
2016
$3,067 (+5.6%)
$29,426
2015
$2,904 (+17.8%)
$35,430
2014
$2,466 (+2.2%)
$28,688
2013
$2,412 (+9.3%)
$28,688
2012
$2,207 (+0.9%)
$28,688
2011
$2,188 (−2.9%)
$26,348
2010
$2,253 (+7.1%)
$26,348
2009
$2,103
$27,870
Tax history for 429 Mapleton Ave Unit B
Year
Property tax
Land + Additions
Assessment*
2025
$3,553 (+39.8%)
$43,513
2024
$2,541 (+1.8%)
$43,513
2023
$2,497 (−1.6%)
$35,618
2022
$2,538 (+4.9%)
$39,303
2021
$2,421 (−1.6%)
$34,284
2020
$2,461 (−18.9%)
$35,271
2019
$3,036 (+19.0%)
$35,421
2018
$2,551 (+3.2%)
$35,421
2017
$2,471 (−19.4%)
$29,426
2016
$3,067 (+5.6%)
$29,426
2015
$2,904 (+17.8%)
$35,430
2014
$2,466 (+2.2%)
$28,688
2013
$2,412 (+9.3%)
$28,688
2012
$2,207 (+0.9%)
$28,688
2011
$2,188 (−2.9%)
$26,348
2010
$2,253 (+7.1%)
$26,348
2009
$2,103
$27,870
*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.
625
Year built
1906
Style
Condo/Co-op
County
Boulder County
APN
R0140902
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: 1
Garage: Yes
Garage Spaces: 1
Parking Features: Garage Door Opener, Alley Access, Oversized
Interior
Bathroom Information
Bathrooms (Full): 0
Bathrooms (Half): 0
Bathrooms (Three Quarter): 1
Bedroom Information
Bedrooms Total: 1
Heating & Cooling
Cooling: Yes
Ceiling Fan(s)
Heating: Yes
Hot Water, Radiator
Interior Features
Gas Range/Oven, Dishwasher, Refrigerator, Washer, Dryer, Microwave
Flooring: Wood Floors
Separate Dining Room, Open Floorplan, Pantry, Walk-In Closet(s), Kitchen Island
Laundry Features: Washer/Dryer Hookups, Common Area
Room Information
Basement: Partial
Exterior
Exterior Features
Lighting, Balcony
Fencing: Partial
Patio and Porch Features: Deck
Roof: Rubber, Flat
Land Information
Road Surface Type: Paved
Lot Information
Horse(s): No
Lot Features: Curbs, Sidewalks, Wooded, Level, Historic District
Road Frontage Type: City Street
Zoning: RES
Property Information
Property Attached: Yes
Property Type: Attached Dwelling
Property Sub Type: Attached Dwelling
View: Yes
Waterfront: No
Subdivision Information
Subdivision Name: Mapleton Hill
MLS Area Major: Boulder
Building Information
Above Grade Finished Area: 625
Building Area Total: 625
Construction Materials: Brick/Brick Veneer
Financial
Tax Information
Parcel Number: R0140902
Tax Annual Amount: 2010
Tax Year: 2007
Financial Information
Listing Terms: Cash, Conventional
Utilities
Utility Information
Utilities: Natural Gas Available, Electricity Available, Cable Available
Electric: Electric,Xcel
Gas: Natural Gas,Xcel
Sewer: City Sewer
Location
HOA Information
Association: Yes
Association Fee: 300
Association Fee Frequency: Monthly
Association Fee Includes: Common Amenities, Trash, Snow Removal, Maintenance Grounds, Management, Utilities, 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 9th and Mapleton head west on Mapleton to 429 Mapleton. Enter the doors under 429 and go up the stairs.
Unparsed Address: 429 Mapleton Ave B Boulder CO 80304
Street Number: 429
Street Name: Mapleton
Street Suffix: Ave
UnitNumber: B
City: Boulder
State or Province: CO
County or Parish: Boulder
Country: US
Postal Code: 80304
Coordinates: -105.291003,40.020612
Latitude: 40.020612
Longitude: -105.291003
Public facts
Beds: 1
Baths: 1.0
Sq. Ft.: 625
Stories: 1.0
Lot Size: —
Style: Condo/Co-op
Year Built: 1906
Year Renovated: 1906
County: Boulder County
APN: R0140902
Home facts updated by county records on Sep 2, 2026
Other
Listing Information
Attribution Contact: 3034433377
Close Price: $389,900
Photos Count: 17
Special Listing Conditions: Private Owner
Standard Status: Closed
Listing Date Information
Close Date: Thursday, July 2, 2009
Cumulative Days on Market: 158
Days on Market: 158
Listing Contract Date: Monday, January 26, 2009
Modification Timestamp: Thursday, July 25, 2024 10:18 PM
Home Information
Direction Faces: South
Entry Level: 2
Entry Location: 2nd Floor
Window Features: Window Coverings, Wood Frames
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 • 0.9mi
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
$658,000 – $797,000
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