428 Sumner St, Longmont, CO 80501
Property image
Property image
OFF MARKET

428 Sumner St
Longmont, CO 80501

Sunset
  • 4 Beds
  • 2 Baths
  • 2,170 sqft

$832,100

Trulia Estimate
as of Jul 25, 2026
Est. Refi. Payment $4,598/mo*

$832,100

Trulia Estimate
as of Jul 25, 2026
Est. Refi. Payment $4,598/mo*
4 Beds
2 Baths
2,170 sqft

Local Information

  • Map ViewExplore the area around 428 Sumner St.
  • Schools1 Preschool School1 Elementary School1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

Home Highlights

Property Type
Single-Family Home
Year Built
1910
Living Area
2,170 sqft
Price/Sqft
$383
Parking
Garage

About this House

This single-family home is located at 428 Sumner St, Longmont, CO. 428 Sumner St is in the Sunset neighborhood in Longmont, CO and in ZIP code 80501. This property has 4 bedrooms, 2 bathrooms and approximately 2,170 sqft of floor space. This property has a lot size of 6100 sqft and was built in 1910.
428 Sumner St, Longmont, CO 80501 is a 4 bedroom, 2 bathroom, 2,170 sqft single-family home in Sunset, built in 1910. It last sold for $762,000 on Jul 23, 2021. It is currently off market. The Trulia Estimate is $832,100, with a rent estimate of $2,446/month.

Home Details for 428 Sumner St

Interior Features

Interior Details
BasementNumber of Rooms: 6
Heating & Cooling
Heating: OtherHeating Fuel: Other
Levels, Entrance, & Accessibility
Stories: 2

Exterior Features

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

Property Information

Year Built
Year Built: 1910Year Updated: 1950
Property Type / Style
Property Type: Single Family HomeArchitecture: Other

Community

Units in Building: 1

Lot Information

Lot Area: 6100 sqft

Price History for 428 Sumner St

DatePriceEventSource
07/23/2021$762,000Sold
IRES as distributed by MLS GRID #942474
06/09/2021$745,000Listed For SaleIRES as distributed by MLS GRID #942474
01/07/2015$449,900ListingRemovedAgent Provided
11/21/2014$449,900PriceChange
Agent Provided
10/22/2014$465,000Listed For SaleAgent Provided
09/16/1999$253,000Sold
N/A
10/01/1996$150,000Sold
N/A
02/03/1994$109,900Sold
N/A

Market trends in Longmont

Last updated June 2026
Buyer'sMarketSeller'sMarket
Avg. sale price
$567K
$9.17K
MoM
Sale-to-List Price
99.9%
0.3%
MoM
Price per sq ft
$263
$4
MoM
Available listings
457
20
MoM
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Property Tax and Assessment

Year2025
Tax$4,540
Assessment$669,400
Home facts updated by county records

Comparable Sales for 428 Sumner St

Address
Distance
Property Type
Sold Price
Sold Date
Bed
Bath
Sqft
0.11
Single-Family Home
$710,000
08/05/25
3
2
1,832
0.26
Single-Family Home
$730,000
03/09/26
4
2
2,176
0.18
Single-Family Home
$735,000
05/04/26
4
3
2,288
0.17
Single-Family Home
$515,000
06/11/26
3
2
1,995
0.22
Single-Family Home
$545,000
11/07/25
4
2
1,600
0.25
Single-Family Home
$672,198
08/14/25
4
3
2,028
0.30
Single-Family Home
$840,000
06/24/26
4
3
2,236
0.23
Single-Family Home
$650,000
04/24/26
4
2
1,542
0.30
Single-Family Home
$715,500
03/06/26
3
2
2,296
0.41
Single-Family Home
$630,000
04/21/26
4
2
2,091

Nearby homes

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Assigned Schools

These are the assigned schools for 428 Sumner St.
The GreatSchools Rating compares schools on a variety of school quality indicators including test scores, college readiness, equity and more. Learn more.

Neighborhood Overview

Neighborhood stats provided by third party data sources.

What Locals Say about Sunset

At least 24 Trulia users voted on each feature.
  • 94 % Say yards are well-kept

  • 94 % Say there are sidewalks

  • 93 % Say parking is easy

  • 90 % Say it's dog friendly

  • 88 % Say there's holiday spirit

  • 79 % Say car is needed

  • 72 % Say people would walk alone at night

  • 70 % Say streets are well-lit

  • 67 % Say it's walkable to restaurants

  • 66 % Say neighbors are friendly

  • 63 % Say it's quiet

  • 55 % Say kids play outside

  • 42 % Say there are community events

  • 39 % Say there's wildlife

  • 34 % Say it's walkable to grocery stores

  • 25 % Say they plan to stay for at least 5 years

Sourced by Trulia users. Learn more about our methodology.
  • Kevin and family
    "Great place to live! No cookie cutters here:). Close to everything you could possibly think off! Did friendly, kid friendly, people take care of yards and homes. Best neighborhood in Longmont"
  • janett c.
    "I lived in this neighborhood for 6 years and really miss it.I love hearing the music from Roosevelt park in the summer and the closeness of downtown"
  • Thompsonsk
    "Literally steps from all the events at Roosevelt Park and Downtown. City bus and regional bus are a block away. Enjoy the annual block parties!"
  • Susie0524
    "Longmont has a big arts & music community with several free community events throughout the year. It tries to be a very inclusive city and celebrates diversity. "
  • Boulder S.
    "Longmont is a community settled by farmers who came for the ample sunshine and the soil. There is an apartment building called the Cannery. They canned beets there. Longmont is blessed with an art community, too. City leaders strive to keep the downtown vibrant. Longmont is a community poised on a great future. "
  • Dena S.
    "This is a quiet street with beautiful mature trees in a well maintained old town neighborhood. Nearby parks, golfing, swimming and sandwich shops are all within walking distance. This is a wonderful neighborhood. "

LGBTQ Local Legal Protections

Apartments for Rent

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Homes for sale near 428 Sumner St

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Off Market Homes Near 428 Sumner St

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