860 Union Avenue, Boulder, CO 80304
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FOR SALE
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860 Union Avenue
Boulder, CO 80304

North Wonderland
  • 5 Beds
  • 4 Baths
  • 4,318 sqft

$2,400,000

Original price: $2,450,000
Est. Mortgage $13,461/mo*
Get Pre-Qualified

$2,400,000

Original price: $2,450,000
Est. Mortgage $13,461/mo*
Get Pre-Qualified
5 Beds
4 Baths
4,318 sqft

Home Highlights

Parking
2 Car Garage
Outdoor
Yes
Climate Control
Heating & Cooling
Price/Sqft
$556
Listed
119 days ago

Local Information

  • Map ViewExplore the area around 860 Union Avenue.
  • Schools1 Elementary School1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

About this House

A striking architectural residence in one of North Boulder’s most desirable pockets, perfectly positioned between Wonderland Lake and Foothills Community Park offering immediate access to miles of trails, open space, and some of North Boulder’s most coveted outdoor amenities. This 5-bedroom, 4-bath masterpiece offers over 4,000 square feet of thoughtfully designed living. Masterfully designed by architect JV DeSousa, the home is defined by clean lines, abundant natural light, soaring ceilings and a sense of volume and ease throughout. The open-concept main level is both refined and highly livable, anchored by custom artistic elements by local artist Osbourne Sculpture, including a statement fireplace, sculptural railing, and bespoke kitchen island. The flexible layout offers true versatility, featuring a spacious main-level office that easily converts to a guest suite with a built-in Murphy bed and access to an ensuite full bath. Function is seamlessly integrated with walk-in closets, built-in dressers, generous shelving, and a well-appointed laundry/mudroom with utility sink and custom cubbies. An oversized garage adds storage and convenience, while recent system upgrades, including two new furnaces, A/C systems, and solar panels producing energy beyond current usage, enhance efficiency and long-term value. Thoughtful capital improvements have been made throughout, including an extension of the outdoor living experience with a composite deck, wood fencing, a premium pergola, and low-water landscaping creating a private, low-maintenance setting designed for both relaxation and entertaining. The fully finished lower level expands the living space with a versatile layout, complete with built-in Murphy bunk beds, ideal for guests, media, or play. Fresh, intentionally minimal and architecturally distinct, this home offers a refined backdrop and a rare opportunity to own a truly enduring piece of North Boulder.

Home Details for 860 Union Avenue

Interior Features

Interior Details
Basement: FinishedNumber of Rooms: 14Types of Rooms: Bedroom, Bathroom, Family Room, Great Room, Kitchen, Laundry, Utility Room
Beds & Baths
Number of Bedrooms: 5Main Level Bedrooms: 1Number of Bathrooms: 4Number of Bathrooms (full): 4Number of Bathrooms (main level): 1
Dimensions and Layout
Living Area: 4318 Square Feet
Appliances & Utilities
Utilities: Cable Available, Electricity ConnectedAppliances: Convection Oven, Cooktop, Dishwasher, Disposal, Dryer, Microwave, Refrigerator, WasherDishwasherDisposalDryerLaundry: In UnitMicrowaveRefrigeratorWasher
Heating & Cooling
Heating: Forced AirHas CoolingAir Conditioning: Central AirHas HeatingHeating Fuel: Forced Air
Fireplace & Spa
Number of Fireplaces: 1Fireplace: GasHas a Fireplace
Gas & Electric
Has Electric on Property
Windows, Doors, Floors & Walls
Flooring: Carpet, Laminate, Wood
Levels, Entrance, & Accessibility
Stories: 2Levels: TwoFloors: Carpet, Laminate, Wood
View
No View

Exterior Features

Exterior Home Features
Roof: CompositionPatio / Porch: CoveredFencing: FullExterior: Garden, Lighting, Private YardGarden
Parking & Garage
Number of Garage Spaces: 2Number of Covered Spaces: 2Has a GarageHas an Attached GarageParking Spaces: 2Parking: Garage Attached
Frontage
Road Surface Type: PavedNot on Waterfront
Water & Sewer
Sewer: Public Sewer
Finished Area
Finished Area (above surface): 2940 Square FeetFinished Area (below surface): 900 Square Feet

Days on Market

Days on Market: 119

Property Information

Year Built
Year Built: 2001
Property Type / Style
Property Type: ResidentialProperty Subtype: Single Family ResidenceStructure Type: HouseArchitecture: Contemporary
Building
Construction Materials: Frame, Stone, StuccoNot Attached PropertyDoes Not Include Home Warranty
Property Information
Not Included in Sale: All Personal Property With The Exception Of Murphy Beds.Parcel Number: R0034008

Price & Status

Price
List Price: $2,400,000Price Per Sqft: $556
Status Change & Dates
Possession Timing: Close Of Escrow

Active Status

MLS Status: Active

Media

Location

Direction & Address
City: BoulderCommunity: Makena Taylor
School Information
Elementary School: FoothillElementary School District: Boulder Valley RE 2Jr High / Middle School: CentennialJr High / Middle School District: Boulder Valley RE 2High School: BoulderHigh School District: Boulder Valley RE 2

Agent Information

Listing Agent
Listing ID: 2663653

Building

Building Area
Building Area: 4318 Square Feet

Community

Not Senior Community

HOA

No HOA

Lot Information

Lot Area: 6412 sqft

Listing Info

Special Conditions: Standard

Offer

Listing Terms: Cash, Conventional

Mobile R/V

Mobile Home Park
Mobile Home Units: Feet

Business

Business Information
Ownership: Individual

Miscellaneous

BasementMls Number: 2663653Attribution Contact: alex.johnson@realatlas.com, 303-521-0187Above Grade Unfinished Area: 2940Below Grade Unfinished Area: 478Showing Service Name: Showing Time
Last check for updates: about 3 hours ago
Listing courtesy of Alex Johnson, (303) 521-0187
Atlas Real Estate Group
Source: REcolorado as distributed by MLS GRID, MLS#2663653
Also Listed on REcolorado as distributed by MLS GRID.

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

Price History for 860 Union Avenue

DatePriceEventSource
07/21/2026$2,400,000PriceChange
REcolorado as distributed by MLS GRID #2663653
06/16/2026$2,450,000PriceChange
REcolorado as distributed by MLS GRID #2663653
05/15/2026$2,525,000PriceChange
REcolorado as distributed by MLS GRID #2663653
04/02/2026$2,595,000Listed For SaleREcolorado as distributed by MLS GRID #2663653
11/17/2015$1,325,000Sold
IRES as distributed by MLS GRID #775274
09/18/2015$1,350,000Listed For SaleAgent Provided
04/23/2002$849,000Sold
N/A

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Property Tax and Assessment

Year2025
Tax$13,699
Assessment$2,274,000
Home facts updated by county records

Comparable Sales for 860 Union Avenue

Address
Distance
Property Type
Sold Price
Sold Date
Bed
Bath
Sqft
1111 Utica Cir, Boulder, CO
0.18
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
725 Union Ave, Boulder, CO
0.13
Single-Family Home
$1,144,000
08/18/25
4
3
2,194
995 Quince Ave, Boulder, CO
0.33
Single-Family Home
$1,820,000
07/14/26
4
4
3,794
990 Utica Circle, Boulder, CO
0.16
Single-Family Home
$2,800,000
10/28/25
5
4.5
5,179
1409 Quince Ave, Boulder, CO
0.46
Single-Family Home
$1,450,000
12/15/25
4
3.5
2,975
1487 Periwinkle Dr, Boulder, CO
0.54
Single-Family Home
$1,325,000
05/08/26
4
3.5
2,476
1476 Periwinkle Dr, Boulder, CO
0.54
Single-Family Home
$1,618,400
07/16/26
4
3.5
2,880
1095 Redwood Ave, Boulder, CO
0.30
Single-Family Home
$4,300,000
02/27/26
5
5
4,959

Nearby homes

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Assigned Schools

These are the assigned schools for 860 Union Avenue.
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

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
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LGBTQ Local Legal Protections

Alex Johnson, Atlas Real Estate Group
Agent Phone: (303) 521-0187
© 2026 REcolorado® All rights reserved. Certain information contained herein is derived from information which is the licensed property of, and copyrighted by, REcolorado®. Some IDX listings have been excluded from this website. Click here for more information
860 Union Avenue, Boulder, CO 80304 is a 5 bedroom, 4 bathroom, 4,318 sqft single-family home built in 2001. 860 Union Avenue is located in North Wonderland, Boulder. This property is currently available for sale and was listed by REcolorado as distributed by MLS GRID on Apr 2, 2026. The MLS # for this home is MLS# 2663653.