800 Union Ave, Boulder, CO 80304
OFF MARKET

800 Union Ave
Boulder, CO 80304

North Wonderland
  • 2 Beds
  • 2 Baths
  • 1,080 sqft

$1,305,200

Trulia Estimate
as of Jul 31, 2026
Est. Refi. Payment $7,354/mo*
Refinance Your Home

$1,305,200

Trulia Estimate
as of Jul 31, 2026
Est. Refi. Payment $7,354/mo*
Refinance Your Home
2 Beds
2 Baths
1,080 sqft

Local Information

  • Map ViewExplore the area around 800 Union Ave.
  • Schools1 Elementary School1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

Home Highlights

Property Type
Single-Family Home
Year Built
1961
Living Area
1,080 sqft
Price/Sqft
$1,209
Parking
Garage

About this House

This single-family home is located at 800 Union Ave, Boulder, CO. 800 Union Ave is in the North Wonderland neighborhood in Boulder, CO and in ZIP code 80304. This property has 2 bedrooms, 2 bathrooms and approximately 1,080 sqft of floor space. This property has a lot size of 9147 sqft and was built in 1961.
800 Union Ave, Boulder, CO 80304 is a 2 bedroom, 2 bathroom, 1,080 sqft single-family home in North Wonderland, built in 1961. It last sold for $780,000 on Apr 17, 2019. More recently, it was listed as a rental in April 2022 with an asking price of $3,900 per month. That rental listing was removed on June 25, 2022. It is currently off market. The Trulia Estimate is $1,305,200, with a rent estimate of $3,548/month.

Home Details for 800 Union Ave

Interior Features

Interior Details
BasementAtticNumber of Rooms: 8
Heating & Cooling
Heating: Forced AirCooling System: OtherHeating Fuel: Forced Air
Levels, Entrance, & Accessibility
Stories: 1Floors: Hardwood
Appliances & Utilities
DryerWasher

Exterior Features

Exterior Home Features
Roof: AsphaltExterior: Shingle, Wood
Parking & Garage
GarageParking Spaces: 3Parking: Garage Detached, Off Street

Property Information

Year Built
Year Built: 1961Year Updated: 1985
Property Type / Style
Property Type: Single Family HomeArchitecture: Conventional

Community

Units in Building: 1

Lot Information

Lot Area: 9147 sqft

Price History for 800 Union Ave

DatePriceEventSource
06/25/2022ListingRemovedZillow Rental Manager
06/11/2022$3,500PriceChange
Zillow Rental Manager
05/13/2022$3,900PriceChange
Zillow Rental Manager
05/06/2022$4,200PriceChange
Zillow Rental Manager
04/08/2022$3,900Listed For RentZillow Rental Manager
04/17/2019$780,000Sold
N/A
07/05/2016$840,000ListingRemovedAgent Provided
06/09/2016$840,000PriceChange
Agent Provided
05/18/2016$897,500Listed For SaleAgent Provided
09/02/2005$485,000Sold
N/A
07/09/2004$1,190,000Sold
N/A

Market trends in Boulder

Last updated June 2026
Buyer'sMarketSeller'sMarket
Avg. sale price
$891K
$60.83KMoM
Sale-to-List Price
98.2%
0.4%MoM
Price per sq ft
$503
$2MoM
Available listings
778
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Property Tax and Assessment

Year2025
Tax$5,994
Assessment$1,367,650
Home facts updated by county records

Comparable Sales for 800 Union Ave

Address
Distance
Property Type
Sold Price
Sold Date
Bed
Bath
Sqft
725 Union Ave, Boulder, CO
0.07
Single-Family Home
$1,144,000
08/18/25
4
3
2,194
1180 Oakdale Place, Boulder, CO
0.63
Single-Family Home
$900,000
03/26/26
2
2
1,754
758 Cottage Ln, Boulder, CO
0.14
Single-Family Home
$1,190,000
10/10/25
3
2.5
1,336
3910 Orchard Ct, Boulder, CO
0.55
Single-Family Home
$1,575,000
04/07/26
3
2
1,724
1063 Quince Ave, Boulder, CO
0.36
Single-Family Home
$1,350,000
06/17/26
3
4
2,464
468 Locust Pl, Boulder, CO
0.19
Single-Family Home
$1,784,280
09/30/25
5
3
4,248
3835 Orion Ct, Boulder, CO
0.57
Single-Family Home
$1,355,000
07/14/26
3
2.5
1,920
1780 Redwood Ave, Boulder, CO
0.76
Single-Family Home
$846,000
08/29/25
4
2.5
2,554
1515 Zamia Ave #3, Boulder, CO
0.77
Single-Family Home
$505,000
10/31/25
2
2
938
1501 Orchard Ave, Boulder, CO
0.66
Single-Family Home
$850,000
12/30/25
5
2
1,720

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Assigned Schools

These are the assigned schools for 800 Union Ave.
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The GreatSchools Rating compares schools on a variety of school quality indicators including test scores, college readiness, equity and more. Learn more.

Neighborhood Overview

North Wonderland
See Local Highlights
Neighborhood stats provided by third party data sources.

What Locals Say about North Wonderland

  • Azeljo
    "The Skip stops often and is quick ride to downtown pearl street mall or connect to the main bus stop which goes anywhere."
    3
    Flag
  • Azeljo
    "Great location nestled among a lake, mountains and a gorgeous park. Short walk to the grocery store, cafes."
    0
    Flag
  • Jan K.
    "I enjoy the quietness, closeness to nature, friendly neighbors. I appreciate the quality of nearby grocery store with abundance of organic food & quality meat & poultry. Several coffee shops within walking distance. Waldorf Elementary & High School, Foothills Community Park, Wonderland Lake, and City of Boulder Open Space all within a short distance. RTD, the public bus, runs about every 10 minutes from various stops on Broadway. Bus to downtown & to University of Colorado & to Denver International Airport. Northwest Boulder is a fabulous area to live in. My house has continued to increase in value. This area is strong in this economy."
    1
    Flag

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Off Market Homes Near 800 Union Ave

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