421 Mapleton Ave #B, Boulder, CO 80304
OFF MARKET

421 Mapleton Ave #B
Boulder, CO 80304

Mapleton Hill
  • 1 Bed
  • 1 Bath
  • 616 sqft

$505,300

Trulia Estimate
as of May 11, 2026
Est. Refi. Payment $2,742/mo*
Refinance Your Home

$505,300

Trulia Estimate
as of May 11, 2026
Est. Refi. Payment $2,742/mo*
Refinance Your Home
1 Bed
1 Bath
616 sqft

Homes for sale near 421 Mapleton Ave #B

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Apartments for Rent

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Local Information

Map showing home location
© Google
-- mins to
Commute Destination

Description

This condo is located at 421 Mapleton Ave #B, Boulder, CO. 421 Mapleton Ave #B is in the Mapleton Hill neighborhood in Boulder, CO and in ZIP code 80304. This property has 1 bedroom, 1 bathroom and approximately 616 sqft of floor space. This property was built in 1906.
This property is off market, which means it's not currently listed for sale or rent on Trulia. This may be different from what's available on other websites or public sources.

Home Highlights

Parking
No Info
Outdoor
Deck
A/C
Heating only
HOA
None
Price/Sqft
No Info
Listed
No Info

Home Details for 421 Mapleton Ave #B

Interior Features

Heating & Cooling
Heating: Other, OtherHeating Fuel: Other
Levels, Entrance, & Accessibility
Stories: 1
Interior Details
Number of Rooms: 3

Property Information

Year Built
Year Built: 1906Year Updated: 1979
Property Type / Style
Property Type: CondoArchitecture: townhouse

Exterior Features

Exterior Home Features
DeckExterior: Brick, Cement Concrete

Community

Units in Building: 1

Price History for 421 Mapleton Ave #B

DatePriceEventSource
12/02/2019$337,500Sold
N/A
12/05/2016$525,000Sold
N/A
10/09/2013$425,000Sold
IRES as distributed by MLS GRID #720897
04/01/2002$295,000Sold
N/A
07/11/2000$259,000Sold
N/A
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Property Tax and Assessment

Year2025
Tax$2,914
Assessment$654,500
Home facts updated by county records

Comparable Sales for 421 Mapleton Ave #B

Address
Distance
Property Type
Sold Price
Sold Date
Bed
Bath
Sqft
625 Pearl St #22, Boulder, CO
0.34
Condo
$445,000
12/01/25
1
1
638
910 Portland Pl #7, Boulder, CO
0.33
Condo
$365,000
08/19/25
1
1
442
1111 Maxwell Ave #122, Boulder, CO
0.44
Condo
$369,000
07/29/25
1
1
612
275 Pearl Street #11, Boulder, CO
0.37
Condo
$455,000
06/30/25
1
1
702
1111 Maxwell Ave #212, Boulder, CO
0.44
Condo
$345,000
01/29/26
2
1
816
780 Walnut St #13, Boulder, CO
0.51
Condo
$535,000
03/18/26
1
1
818
1111 Maxwell Ave #236, Boulder, CO
0.44
Condo
$393,000
10/20/25
2
1
800
3025 Broadway St #10, Boulder, CO
0.77
Condo
$338,000
07/10/25
1
1
474
1111 Maxwell Ave #231, Boulder, CO
0.44
Condo
$520,000
05/13/25
2
1
816
3025 Broadway St #17, Boulder, CO
0.77
Condo
$299,900
07/23/25
1
1
462

Assigned Schools

These are the assigned schools for 421 Mapleton Ave #B.
View nearby schools on GreatSchools
The GreatSchools Rating compares schools on a variety of school quality indicators including test scores, college readiness, equity and more. Learn more.

Neighborhood Overview

Mapleton Hill
See Local Highlights
Neighborhood stats provided by third party data sources.

What Locals Say about Mapleton Hill

At least 9 Trulia users voted on each feature.

  • 100 % Say it's walkable to restaurants

  • 100 % Say there are sidewalks

  • 95 % Say it's dog friendly

  • 90 % Say it's walkable to grocery stores

  • 84 % Say yards are well-kept

  • 82 % Say people would walk alone at night

  • 78 % Say kids play outside

  • 75 % Say there's wildlife

  • 67 % Say there's holiday spirit

  • 67 % Say parking is easy

  • 67 % Say there are community events

  • 64 % Say it's quiet

  • 63 % Say they plan to stay for at least 5 years

  • 57 % Say neighbors are friendly

  • 56 % Say streets are well-lit

  • 29 % Say car is needed

Learn more about our methodology.
  • Trulia User
    "I bike to campus in 20 minutes and it’s great besides the traffic and gas fumes from cars which sucks transit is very good here, bus stops all up and down Broadway."
    0
    Flag
  • Trulia User
    "It seems as if most people own dogs . Very dog friendly . Dogs always seem well trained . Dogs also seem very friendly . "
    1
    Flag
  • Liz J.
    "There are lots of dog walkers and runners. Many wet dogs show that there is good swimming in the ditches. "
    1
    Flag
  • Taraarnolds
    "Loads of people out walking dogs and many folks stopping to chat too. You'll sometimes hear a dog or two barking, but never for long."
    0
    Flag
  • Thomas
    "I've lived in the Mapleton Hill neighborhood for 5 years. It is so convenient and quaint; my kids just love having the freedom to play with all the other kids here."
    1
    Flag
  • Maxclauson c. n.
    "Historic neighborhood that is close to town but secluded enough to be calm and quiet. Filled with interesting new arrivals and long time residents. "
    3
    Flag
  • Noah B.
    "Quiet and calm neighborhood, close to everything that makes Boulder great. Easy access to Pearl, Sanitas, Wonderland, and Ideal Market area. "
    1
    Flag
  • amazingdairy
    "West Pearl is truly a neighborhood unto itself, with a variety of shops & cafes and easy access to trails. Start your day with some tea and scones at Spruce Confections, enjoy browsing various antique stores and Two Hand Paperie, then select a bottle of wine at West End Wine Shop. Lolita's is conveniently located across the street to pick up last minute groceries for dinner, or you can enjoy a slice at Nick and Willy's and have some confectionary treats at Piece, Love & Chocolate. Settlers' Park is just down the street, as well as the trail heads to Red Rocks & Sanitas, and the Boulder Bike Path. When you live here, everything that makes Boulder so wonderful is only steps away!"
    2
    Flag

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Homes for rent near 421 Mapleton Ave #B

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Off Market Homes Near 421 Mapleton Ave #B

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Explore by feature

421 Mapleton Ave #B, Boulder, CO 80304 is a 1 bedroom, 1 bathroom, 616 sqft condo built in 1906. 421 Mapleton Ave #B is located in Mapleton Hill, Boulder. This property is not currently available for sale. 421 Mapleton Ave #B was last sold on Dec 2, 2019 for $337,500. The current Trulia Estimate for 421 Mapleton Ave #B is $505,300.