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

$495,600

Trulia Estimate
  • 1 Bed
  • 1 Bath
  • 616 sqft

421 Mapleton Ave #B, Boulder, CO 80304

Mapleton Hill
Est. Refi. Payment $2,972/mo*
Refinance Your Home
Currently Off Market - Sold Dec 2, 2019 for $337,500

Home Value

Trulia Estimate
$496K
Since last month
Decreased$700 (-0.1%)
Since last year
Increased$29K (+6.1%)
Since last sale
Increased$159K (+47%)
Learn more about this home's value by checking out its Trulia Estimate, the value of nearby homes, and how much similar homes have sold for.

Trulia Estimate

The of this home's value decreased by -14% in the last 10 years
MonthEstimated value
2026
September 2026$496K
August 2026$497K
July 2026$504K
June 2026$500K
May 2026$507K
April 2026$496K
March 2026$496K
February 2026$486K
January 2026$479K
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016

Comparable sales

These are recently sold homes that have a similar location or other similar features to this home, like bedrooms, bathrooms, and square footage. Get a sense of the expected prices in the area by viewing these homes.
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
1111 Maxwell Ave #105, Boulder, CO
0.43
Condo
$289,000
07/02/26
1
1
612
1111 Maxwell Ave #110, Boulder, CO
0.44
Condo
$278,000
09/18/26
1
1
520
625 Pearl Street #23, Boulder, CO
0.34
Condo
$510,000
07/31/26
2
1
748
780 Walnut St #13, Boulder, CO
0.51
Condo
$535,000
03/18/26
1
1
818
1111 Maxwell Avenue #212, Boulder, CO
0.45
Condo
$345,000
01/29/26
2
1
816
780 Walnut St #A, Boulder, CO
0.52
Condo
$535,000
03/16/26
1
1
818
1111 Maxwell Ave #236, Boulder, CO
0.43
Condo
$393,000
10/20/25
2
1
800
1111 Maxwell Ave #232, Boulder, CO
0.42
Condo
$395,000
08/25/26
2
1
816
1111 Maxwell Ave #201, Boulder, CO
0.43
Condo
$418,000
07/17/26
2
1
816

Nearby home prices

Get a sense of expected prices in the area by checking the value of nearby homes.
Address
Distance
Price
Bed
Bath
Sqft
Status
421 Mapleton Ave #A, Boulder, CO 80304
0.01
$727,000
1
1
618
Recently Sold
433 Mapleton Avenue #A, Boulder, CO 80304
0.00
$802,000
1
1
724
Off Market
2424 4th St, Boulder, CO 80304
0.03
$1,487,600
3
2
2,234
Off Market
417 Mapleton Ave #B, Boulder, CO 80304
0.01
$1,044,800
1
1.5
1,207
Off Market
2409 5th St, Boulder, CO 80304
0.03
$3,500,000
4
4.5
4,343
For Sale
2449 5th St, Boulder, CO 80304
0.06
$2,651,475
5
4
3,549
Recently Sold
2325 4th St, Boulder, CO 80302
0.07
$1,453,400
2
2
1,282
Off Market
330 Mapleton Ave, Boulder, CO 80304
0.08
$2,133,100
3
2
2,626
Off Market
516 Maxwell Ave, Boulder, CO 80304
0.08
$4,236,000
4
4.5
3,633
Off Market
424 Concord Ave, Boulder, CO 80304
0.11
$2,194,500
3
2
2,875
Off Market
545 Mapleton Ave, Boulder, CO 80304
0.09
$2,225,000
3
3
2,940
Recently Sold
527 Maxwell Ave, Boulder, CO 80304
0.11
$2,753,500
4
3.5
2,806
Off Market

Local Information

  • Map ViewExplore the area around 421 Mapleton Ave #B.
  • Schools1 Elementary School1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

Home Highlights

Condo
Built in 1906
616 sqft
$805/sqft

About this House

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.
421 Mapleton Ave #B, Boulder, CO 80304 is a 1 bedroom, 1 bathroom, 616 sqft condo in Mapleton Hill, built in 1906. It last sold for $337,500 on Dec 2, 2019. This property is not currently displayed as for sale or rent on Trulia. The Trulia Estimate is $495,600, with a rent estimate of $1,889/month.

Home Details for 421 Mapleton Ave #B

Interior Features

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 and Tax history

DateEventPrice
Dec 2, 2019
Source: N/A
Sold
$337,500
Dec 5, 2016
Source: N/A
Sold
$525,000
Oct 9, 2013
Source: IRES as distributed by MLS GRID #720897
Sold
$425,000
Apr 1, 2002
Source: N/A
Sold
$295,000
Jul 11, 2000
Source: N/A
Sold
$259,000

Market trends in Boulder

Last updated August 2026
Buyer'sMarketSeller'sMarket
Avg. sale price
$904K
$6.67KMoM
Sale-to-List Price
98.2%
0.2%MoM
Price per sq ft
$489
$10MoM
Available listings
765
3MoM

Around this home

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

Sourced by Trulia users. 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

LGBTQ Local Legal Protections

Frequently asked questions about 421 Mapleton Ave #B

  • What is 421 Mapleton Ave #B estimated to be worth?
    Trulia's estimated value for 421 Mapleton Ave #B in Boulder, CO is $495,600.
  • What is the price history for 421 Mapleton Ave #B?
    421 Mapleton Ave #B in Boulder, CO last sold for $337,500 in December 2019.
  • Is Boulder a buyer's or seller's market?
    Boulder is currently a balanced market, based on recent for-sale activity.
  • What's the median sale price in Boulder?
    The median sale price in Boulder is $904K. That is up $6.67K from the prior month.

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