Est. $1,351 per month, based on comparable rentals
Sale and tax history for 421 Mapleton Ave Unit A
Sale History
Tax History
Date
Event
Price
IRES as Distributed by MLS Grid #1065010
Jul 24, 2026
Sold
$727,000
$1,176/sq ft
Jul 24, 2026
Listed
$727,000
$1,176/sq ft
IRES as Distributed by MLS Grid #997643
Apr 18, 2024
Sold
$605,000
$979/sq ft
Apr 4, 2024
Contingent
—
Nov 3, 2023
Price Changed
$699,000
$1,131/sq ft
Oct 6, 2023
Listed
$750,000
$1,214/sq ft
+12
Public Remarks
HUGE Price Improvement on this PERFECTLY LOCATED property in West Boulder! This Mapleton Hill historic gem sits only two blocks from Mt. Sanitas & just a few blocks to Downtown. The inside has a flowing floor plan with high ceilings, brick accent walls, built-in book shelves & wood floors throughout. A modern kitchen features Sub Zero & Bosch appliances as well as stainless steel countertops & a dining area. The bedroom is very spacious & overlooks the park-like patio area & grounds. Building roof is less then 2 years old and the garage roof is less then 3 years old. Newer gas stove & garbage disposal. Super well maintained unit with utility bills averaging only $30-$40 per Month! This elegantly historic property is a true rarity sitting in an ideal location. HOA does not allow short term rentals. Pet friendly HOA. Additional off-street parking on both sides of the garage AND alley access! The HOA shows 775 SQ. FT.
Public Records
Dec 5, 2016
Sold
$525,000
$850/sq ft
Public Records
Feb 15, 2001
Sold
$290,100
$469/sq ft
Public Records
Feb 5, 1999
Sold
$194,000
$314/sq ft
Year
Property tax
Land + Additions
Assessment*
2025
$4,110 (+32.2%)
$43,106
2024
$3,110 (+1.8%)
$43,106
2023
$3,056 (−3.4%)
$35,387
2022
$3,164 (+4.9%)
$39,072
2021
$3,017 (−1.6%)
$34,076
2020
$3,065 (+1.6%)
$35,056
2019
$3,018 (+19.0%)
$35,214
2018
$2,536 (+3.2%)
$35,214
2017
$2,456 (−15.6%)
$29,246
2016
$2,912 (+5.6%)
$29,246
2015
$2,758 (+35.7%)
$33,647
2014
$2,032 (+2.2%)
$23,641
2013
$1,988 (−2.9%)
$23,641
2012
$2,047 (+0.9%)
$23,641
2011
$2,029 (−17.3%)
$24,437
2010
$2,452 (+7.1%)
$24,437
2009
$2,290
$30,340
Public record
Public record
Zoning
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.
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.