855 Union Ave, Boulder, CO 80304
Property image
Property image
OFF MARKET

855 Union Ave
Boulder, CO 80304

North Wonderland
  • 6 Beds
  • 3.5 Baths
  • 2,328 sqft (on 0.33 acres)

$1,866,000

Trulia Estimate
as of Aug 21, 2026
Est. Refi. Payment $10,305/mo*
Refinance Your Home

$1,866,000

Trulia Estimate
as of Aug 21, 2026
Est. Refi. Payment $10,305/mo*
Refinance Your Home
6 Beds
3.5 Baths
2,328 sqft
(on 0.33 acres)

Home Value

Trulia Estimate
$1.87M
Since last month
Increased$40K (+2.1%)
Since last year
Decreased$76K (-3.8%)
Since last sale
Increased$388K (+25.9%)
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 +14% in the last 10 years
MonthEstimated value
2026
August 2026$1.89M
July 2026$1.85M
June 2026$1.92M
May 2026$1.87M
April 2026$1.84M
March 2026$1.84M
February 2026$1.78M
January 2026$1.71M
2025
2024

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
1111 Utica Cir, Boulder, CO
0.20
Single-Family Home
$1,500,000
07/24/26
5
3.5
3,170
468 Locust Pl, Boulder, CO
0.25
Single-Family Home
$1,784,280
09/30/25
5
3
4,248
990 Utica Circle, Boulder, CO
0.19
Single-Family Home
$2,800,000
10/28/25
5
4.5
5,179
950 Quince Ave, Boulder, CO
0.42
Single-Family Home
$2,300,000
10/08/25
4
3.5
2,804
995 Quince Ave, Boulder, CO
0.36
Single-Family Home
$1,820,000
07/14/26
4
4
3,794
1409 Quince Ave, Boulder, CO
0.49
Single-Family Home
$1,450,000
12/15/25
4
3.5
2,975
1487 Periwinkle Dr, Boulder, CO
0.56
Single-Family Home
$1,325,000
05/08/26
4
3.5
2,476
4740 8th St, Boulder, CO
0.54
Single-Family Home
$1,550,000
12/11/25
4
3.5
2,498

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
805 Union Avenue, Boulder, CO 80304
0.07
$1,081,200
3
2
1,200
Off Market
735 Utica Ave, Boulder, CO 80304
0.09
$3,057,500
4
4
4,178
Off Market
780 Utica Ave, Boulder, CO 80304
0.10
$1,176,000
2
1.5
1,317
Off Market
786 Cottage Ln, Boulder, CO 80304
0.11
$1,060,400
2
1.5
1,168
Off Market
700 Utica Avenue, Boulder, CO 80304
0.14
$6,895,000
4
3.5
4,578
For Sale
725 Union Ave, Boulder, CO 80304
0.13
$1,127,800
4
3
2,194
Off Market
625 Utica Ave, Boulder, CO 80304
0.15
$2,815,500
5
3.5
4,854
Off Market
758 Cottage Ln, Boulder, CO 80304
0.14
$1,178,200
3
2.5
1,336
Off Market
932 Locust Ave, Boulder, CO 80304
0.10
$2,044,400
4
3.5
3,462
Off Market
564 Locust Pl, Boulder, CO 80304
0.17
$1,662,400
4
3.5
3,177
Off Market
952 Utica Cir, Boulder, CO 80304
0.15
$2,052,300
6
3.5
3,964
Off Market

Local Information

  • Map ViewExplore the area around 855 Union Ave.
  • Schools1 Elementary School1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

Home Highlights

Property Type
Single-Family Home
Year Built
1960
Lot Size
0.33 acres
Living Area
2,328 sqft
Price/Sqft
$802
Parking
Garage

About this House

Perfect opportunity for developers and visionaries, prime location in North Boulder's coveted locale! Lives like two homes on one lot, the property boasts a sprawling 14,000 square-foot lot with high SUBDIVISION POTENTIAL. Nestled in a neighborhood supporting $3+ million homes, this serene oasis near Wonderland Hill Lake and Lucky's Market offers ample privacy and lush trees. Seize this chance to build your dream, develop or subdivide in this coveted neighborhood."
855 Union Ave, Boulder, CO 80304 is a 6 bedroom, 4 bathroom, 2,328 sqft single-family home in North Wonderland, built in 1960. It last sold for $1,500,000 on Jun 13, 2024 (9% below the $1,650,000 asking price). More recently, it was listed as a rental in April 2023 with an asking price of $1,850 per month. That rental listing was removed on May 11, 2023. It is currently off market. The Trulia Estimate is $1,866,000, with a rent estimate of $4,889/month.
Last check for updates: about 7 hours ago
Listed by Alex Jacobson, (303) 523-8207
Compass - Boulder
Eric Jacobson, (303) 437-0221
Compass - Boulder
Bought with: Deanna Franco, (720) 422-5131, 8030 Realty
Source: IRES as distributed by MLS GRID, MLS#1008933

Home Details for 855 Union Ave

Interior Features

Interior Details
Basement: NoneNumber of Rooms: 2Types of Rooms: Primary Bedroom, Kitchen
Beds & Baths
Number of Bedrooms: 6Number of Bathrooms: 4Number of Bathrooms (full): 3Number of Bathrooms (half): 1Number of Bathrooms (main level): 4
Dimensions and Layout
Living Area: 2328 Square Feet
Appliances & Utilities
Utilities: Natural Gas Available, Electricity AvailableAppliances: No Inclusions
Heating & Cooling
Heating: Forced AirHas HeatingHeating Fuel: Forced Air
Fireplace & Spa
Fireplace: Free StandingHas a Fireplace
Gas & Electric
Electric: XcelGas: XcelHas Electric on Property
Levels, Entrance, & Accessibility
Stories: 1Levels: OneAccessibility: Accessible Approach with Ramp
View
No View

Exterior Features

Exterior Home Features
Roof: CompositionFencing: Partial
Parking & Garage
Number of Garage Spaces: 4Number of Covered Spaces: 4Other Parking: Off StreetNo CarportHas a GarageNo Attached GarageParking Spaces: 4Parking: Garage
Frontage
Not on Waterfront
Farm & Range
Does Not Include Irrigation Water Rights
Finished Area
Finished Area (above surface): 2328 Square Feet

Property Information

Year Built
Year Built: 1960
Property Type / Style
Property Type: ResidentialProperty Subtype: Single Family Residence
Building
Construction Materials: Frame, BrickNot a New ConstructionNot Attached Property
Property Information
Condition: FixerUsage of Home: Single FamilyParcel Number: R0033825

Price & Status

Price
List Price: $1,650,000

Active Status

MLS Status: Sold

Location

Direction & Address
City: BoulderCommunity: Paris Sub
School Information
Elementary School: FoothillJr High / Middle School: CentennialHigh School: BoulderHigh School District: Boulder Valley Dist RE2

Building

Building Area
Building Area: 2328 Square Feet

HOA

No HOA

Lot Information

Lot Area: 0.33 acres

Listing Info

Special Conditions: Private Owner

Offer

Listing Terms: Cash, Conventional, FHA

Energy

Energy Efficiency Features: Southern Exposure

Miscellaneous

Mls Number: 1008933Attribution Contact: 303-523-8207Above Grade Unfinished Area: 2328Activation Date: Tue May 07 2024Showing Service Name: ShowingTime

Price and Tax history

DateEventPrice
Jun 13, 2024
Source: IRES as distributed by MLS GRID #1008933
Sold
$1,500,000
May 7, 2024
Source: IRES as distributed by MLS GRID #1008933
PendingToActive
$1,650,000
May 7, 2024
Source: REcolorado as distributed by MLS GRID #IR1008933
Pending
$1,650,000
May 11, 2023
Source: Zillow Rentals
ListingRemoved
Apr 28, 2023
Source: Zillow Rentals
Listed For Rent
$1,850

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

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

LGBTQ Local Legal Protections

Based on information submitted to the MLS GRID as of 2026-08-20 13:57:59 PDT. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information. Some IDX listings have been excluded from this website. Click here for more information

Frequently asked questions about 855 Union Ave

  • What is 855 Union Ave estimated to be worth?
    Trulia's estimated value for 855 Union Ave in Boulder, CO is $1,866,000.
  • What is the price history for 855 Union Ave?
    855 Union Ave in Boulder, CO last sold for $1,500,000 in June 2024.
  • 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.
  • How big is the lot at 855 Union Ave?
    The lot at 855 Union Ave in Boulder, CO is about 0.33 acres (14,439 sq ft).
  • Does 855 Union Ave have a garage?
    Yes, 855 Union Ave in Boulder, CO has a garage.

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