428 Alpine Ave, Boulder, CO 80304
OFF MARKET

428 Alpine Ave
Boulder, CO 80304

Mapleton Hill
  • 2 Beds
  • 1 Bath
  • 1,140 sqft

$1,129,300

Trulia Estimate
as of May 25, 2026
Est. Refi. Payment $6,255/mo*
Refinance Your Home

$1,129,300

Trulia Estimate
as of May 25, 2026
Est. Refi. Payment $6,255/mo*
Refinance Your Home
2 Beds
1 Bath
1,140 sqft

Local Information

Map showing home location
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-- mins to
Commute Destination

Description

This single-family home is located at 428 Alpine Ave, Boulder, CO. 428 Alpine Ave is in the Mapleton Hill neighborhood in Boulder, CO and in ZIP code 80304. This property has 2 bedrooms, 1 bathroom and approximately 1,140 sqft of floor space. This property has a lot size of 5777 sqft and was built in 1910.
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
Garage
Outdoor
No Info
A/C
Heating only
HOA
None
Price/Sqft
No Info
Listed
No Info

Home Details for 428 Alpine Ave

Interior Features

Heating & Cooling
Heating: WallHeating Fuel: Wall
Levels, Entrance, & Accessibility
Stories: 1
Interior Details
Number of Rooms: 5

Exterior Features

Exterior Home Features
Roof: AsphaltExterior: Shingle, Wood
Parking & Garage
GarageParking: Garage Detached

Property Information

Year Built
Year Built: 1910Year Updated: 1910
Property Type / Style
Property Type: Single Family HomeArchitecture: Ranch / Rambler

Community

Units in Building: 1

Lot Information

Lot Area: 5777 sqft

Price History for 428 Alpine Ave

DatePriceEventSource
01/21/2025$770,000Sold
N/A
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Property Tax and Assessment

Year2025
Tax$5,917
Assessment$1,097,700
Home facts updated by county records

Comparable Sales for 428 Alpine Ave

Address
Distance
Property Type
Sold Price
Sold Date
Bed
Bath
Sqft
2843 4th St, Boulder, CO
0.16
Single-Family Home
$1,000,000
04/07/26
2
1
1,122
665 North St, Boulder, CO
0.20
Single-Family Home
$690,000
09/25/25
2
1
790
2435 7th St, Boulder, CO
0.33
Single-Family Home
$1,150,000
10/30/25
3
1
1,170
3075 5th St, Boulder, CO
0.36
Single-Family Home
$995,000
03/11/26
3
2
1,291
405 Valley View Dr, Boulder, CO
0.04
Single-Family Home
$1,810,000
03/02/26
3
2.5
1,937
516 Valley View Dr, Boulder, CO
0.08
Single-Family Home
$1,450,000
05/30/25
4
2.5
2,037
3232 7th St, Boulder, CO
0.58
Single-Family Home
$875,000
06/02/25
3
2
1,202
740 Hawthorn Ave, Boulder, CO
0.68
Single-Family Home
$1,085,000
09/05/25
2
1
837
3150 5th Street, Boulder, CO
0.47
Single-Family Home
$1,000,000
04/20/26
3
2
1,836
3120 Jefferson St, Boulder, CO
0.80
Single-Family Home
$940,000
07/11/25
3
1
1,164

Nearby homes

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Assigned Schools

These are the assigned schools for 428 Alpine Ave.
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

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

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428 Alpine Ave, Boulder, CO 80304 is a 2 bedroom, 1 bathroom, 1,140 sqft single-family home built in 1910. 428 Alpine Ave is located in Mapleton Hill, Boulder. This property is not currently available for sale. 428 Alpine Ave was last sold on Jan 21, 2025 for $770,000. The current Trulia Estimate for 428 Alpine Ave is $1,129,300.