421 Highland Ave, Boulder, CO 80302
OFF MARKET

$4,235,500

Trulia Estimate
  • 4 Beds
  • 4 Baths
  • 4,505 sqft

421 Highland Ave, Boulder, CO 80302

Mapleton Hill
Est. Refi. Payment $23,833/mo*
Refinance Your Home
Currently Off Market - Sold Apr 21, 2023 for $3,750,000

Home Value

Trulia Estimate
$4.24M
Since last month
Decreased$48K (-1.1%)
Since last year
Increased$158K (+3.9%)
Since last sale
Increased$486K (+12.9%)
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 increased by +31% in the last 10 years
MonthEstimated value
2026
August 2026$4.24M
August 2026$4.21M
July 2026$4.28M
June 2026$4.3M
May 2026$4.3M
April 2026$4.27M
March 2026$4.18M
February 2026$4.08M
January 2026$3.91M
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
2237 4th Street, Boulder, CO
0.06
Single-Family Home
$2,180,000
09/29/25
4
4.5
4,108
2449 5th St, Boulder, CO
0.13
Single-Family Home
$2,651,475
05/01/26
5
4
3,549
615 Spruce St, Boulder, CO
0.22
Single-Family Home
$3,200,000
06/02/26
3
3.5
2,796
2586 3rd St, Boulder, CO
0.25
Single-Family Home
$4,210,200
03/09/26
5
4
4,390
720 Mapleton Ave, Boulder, CO
0.22
Single-Family Home
$4,587,500
09/29/25
5
5.5
5,091
625 Concord Ave, Boulder, CO
0.28
Single-Family Home
$2,700,000
02/25/26
4
3
4,640
720 Mapleton Ave, Boulder, CO
0.22
Single-Family Home
$4,587,500
09/29/25
5
5.5
3,675
2230 Knollwood Dr, Boulder, CO
0.19
Single-Family Home
$3,750,000
07/15/26
4
3
4,046
545 Mapleton Ave, Boulder, CO
0.12
Single-Family Home
$2,225,000
03/23/26
3
3
2,940
320 Pearl St, Boulder, CO
0.31
Single-Family Home
$2,100,000
08/14/26
5
4
3,034

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
2325 4th St, Boulder, CO 80302
0.05
$1,456,500
2
2
1,282
Off Market
417 Mapleton Ave #B, Boulder, CO 80304
0.07
$1,029,600
1
1.5
1,207
Off Market
433 Mapleton Avenue #A, Boulder, CO 80304
0.08
$800,800
1
1
724
Off Market
330 Mapleton Ave, Boulder, CO 80304
0.07
$2,105,500
3
2
2,626
Off Market
436 Highland Ave, Boulder, CO 80302
0.05
$3,623,400
4
3
3,379
Off Market
2409 5th St, Boulder, CO 80304
0.08
$3,900,000
4
4.5
4,343
For Sale
421 Mapleton Ave #A, Boulder, CO 80304
0.08
$727,000
1
1
618
Recently Sold
2237 4th Street, Boulder, CO 80302
0.06
$3,899,000
4
4.5
4,108
For Sale
2424 4th St, Boulder, CO 80304
0.09
$1,513,100
3
2
2,234
Off Market
453 Pine St, Boulder, CO 80302
0.08
$7,511,400
5
6.5
6,300
Off Market
505 Pine St, Boulder, CO 80302
0.09
$4,345,000
4
2.5
3,296
For Sale
550 Mapleton Ave, Boulder, CO 80304
0.11
$5,315,200
5
4
5,801
Off Market

Local Information

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

Home Highlights

Single-Family Home
Built in 1904
4,505 sqft
$940/sqft
Garage

About this House

This single-family home is located at 421 Highland Ave, Boulder, CO. 421 Highland Ave is in the Mapleton Hill neighborhood in Boulder, CO and in ZIP code 80302. This property has 4 bedrooms, 4 bathrooms and approximately 4,505 sqft of floor space. This property has a lot size of 7109 sqft and was built in 1904.
421 Highland Ave, Boulder, CO 80302 is a 4 bedroom, 4 bathroom, 4,505 sqft single-family home in Mapleton Hill, built in 1904. It last sold for $3,750,000 on Apr 21, 2023. More recently, it was listed as a rental in October 2021 with an asking price of $9,500 per month. That rental listing was removed on November 2, 2021. This property is not currently displayed as for sale or rent on Trulia. The Trulia Estimate is $4,235,500, with a rent estimate of $6,951/month.

Home Details for 421 Highland Ave

Interior Features

Interior Details
BasementNumber of Rooms: 10
Heating & Cooling
Heating: Forced AirAir ConditioningHeating Fuel: Forced Air
Levels, Entrance, & Accessibility
Stories: 2Floors: Hardwood
Appliances & Utilities
DryerWasher
Fireplace & Spa
Fireplace

Exterior Features

Exterior Home Features
Roof: AsphaltDeckExterior: Shingle, Wood, Brick, Cement ConcreteGardenPorch
Parking & Garage
GarageParking: Garage Detached

Property Information

Year Built
Year Built: 1904Year Updated: 2000
Property Type / Style
Property Type: Single Family HomeArchitecture: split level

Community

Units in Building: 1

Lot Information

Lot Area: 7108 sqft

Price and Tax history

DateEventPrice
Apr 21, 2023
Source: IRES as distributed by MLS GRID #984011
Sold
$3,750,000
Apr 15, 2023
Source: IRES as distributed by MLS GRID #984011
Pending
$3,975,000
Mar 27, 2023
Source: IRES as distributed by MLS GRID #984011
Listed For Sale
$3,975,000
Feb 5, 2023
Source: IRES as distributed by MLS GRID #979314
ListingRemoved
Dec 1, 2022
Source: IRES as distributed by MLS GRID #979314
Listed For Sale
$3,750,000

Market trends in Boulder

Last updated July 2026
Buyer'sMarketSeller'sMarket
Avg. sale price
$897K
$10.37KMoM
Sale-to-List Price
98.4%
0.1%MoM
Price per sq ft
$499
$4MoM
Available listings
760
19MoM

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 Highland Ave

  • What is 421 Highland Ave estimated to be worth?
    Trulia's estimated value for 421 Highland Ave in Boulder, CO is $4,235,500.
  • What is the price history for 421 Highland Ave?
    421 Highland Ave in Boulder, CO last sold for $3,750,000 in April 2023.
  • 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 $897K. That is up $10.37K from the prior month.
  • Does 421 Highland Ave have laundry facilities?
    Yes, 421 Highland Ave in Boulder, CO has in-unit laundry.
  • How big is the lot at 421 Highland Ave?
    The lot at 421 Highland Ave in Boulder, CO is about 0.16 acres (7,109 sq ft).

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Apartments for Rent

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Off Market Homes Near 421 Highland Ave

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