Sold on Jul 2026
$727,000
1
bd
1 ba
618
sq ft

421 Mapleton Ave Unit A, Boulder, CO 80304

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About this home

Single-familyProperty Type
1906Year Built
0.54 acresLot Size
$1,176Price/Sq.Ft.
$645/moHOA Dues
1 car garageParking
Listed by John Kinney Homestead Real Estate, LLC
Contact: 4405391078
Bought with John Kinney Homestead Real Estate, LLC
720-201-0968 (broker)
Redfin checked: 2 minutes ago
Source:IRES as Distributed by MLS Grid #1065010

Redfin Estimate

$703,039
$24K since sold in July 2026$3,000 since August

This home's estimate is 65.5% higher than the average sale price ($425K) of 6 comparable homes.

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Market trends in 80304, CO

Homeowner tools

Sale and tax history for 421 Mapleton Ave Unit A

Public record

Beds
1
Baths
1
Stories
1
Lot width
Lot depth
Lot size
Year renovated
1906
Sq. Ft.
618
Year built
1906
Style
Condo/Co-op
County
Boulder County
APN
R0140895
Parking Spaces
Basement
Accessible
HOA Dues
Garage
Features
Last updated by owner on Sep 2, 2026.

Property details

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

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
90
64
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
$668,000 – $809,000

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Property information provided by IRES as Distributed by MLS Grid when last listed in 2026. This data may not match public records. Learn more.
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GreatSchools Ratings provided by GreatSchools.org.