Listing provided courtesy of Atlas Real Estate Groupas Distributed by MLSGrid- MLS# 2663653MLS Provider

860 Union AvenueBoulder, CO 80304

Single Family · 5 Beds · 4 Full Baths · 4,318 Sq. ft. | 0.15 Acres
$2,450,000 Active

860 Union Avenue Overview

Time on Site:
88 days
Visits:
0

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.

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860 Union Avenue Facts & Features

  • Type Single Family
  • Sq. ft. 4,318
  • Price/Sq.ft. $567
  • Lot 0.15 Acres

Details

General

Association/HOA

  • Association: false

School Information

  • School District: Boulder Valley RE 2
  • Elementary School: Foothill
  • Middle Or Junior School: Centennial
  • High School: Boulder

Building Information

  • Year Built: 2001

Location/Region

  • Country: US
  • County Or Parish: Boulder
  • Subdivision Name: Makena Taylor

Tax Information

  • Tax Annual Amount: 13552
  • Tax Year: 2025

General Information

  • Exclusions: All personal Property with the exception of Murphy Beds.
  • Furnished: Unfurnished
  • Listing Terms: Cash,Conventional
  • Ownership: Individual
  • Parcel Number: R0034008
  • Property Sub Type: Single Family Residence
  • Property Type: Residential
  • Senior Community: false
  • Special Listing Conditions: None

Interior

Parking Information

  • Garage Spaces: 2

Beds/Baths

  • Bathrooms Full: 4
  • Bathrooms Half: 0
  • Bathrooms One Quarter: 0
  • Bathrooms Three Quarter: 0
  • Bathrooms Total: 4
  • Bedrooms Total: 5

Building Interior

  • Above Grade Finished Area: 2940
  • Below Grade Finished Area: 900
  • Building Area Source: Public Records
  • Building Area Total: 4318

General Information

  • Appliances: Convection Oven,Cooktop,Dishwasher,Disposal,Dryer,Microwave,Refrigerator,Sump Pump,Washer
  • Cooling: Central Air
  • Fireplace Features: Gas
  • Fireplaces Total: 1
  • Flooring: Carpet,Laminate,Wood
  • Heating: Forced Air
  • Interior Features: Entrance Foyer,Granite Counters,High Speed Internet,Kitchen Island,Open Floorplan,Radon Mitigation System,Smart Thermostat,Vaulted Ceiling(s),Walk-In Closet(s)
  • Laundry Features: In Unit
  • Levels: Two
  • Living Area: 3840
  • Main Level Bathrooms: 1
  • Main Level Bedrooms: 1

Exterior

Parking Information

  • Parking Total: 2

Lot Information

  • Lot Features: Landscaped,Many Trees,Sprinklers In Front,Sprinklers In Rear
  • Lot Size Acres: 0.15
  • Lot Size Area: 6412
  • Lot Size Square Feet: 6412
  • Lot Size Units: Square Feet
  • Road Surface Type: Paved

Building Exterior/Construction

  • Architectural Style: Contemporary
  • Attached Garage: true
  • Construction Materials: Frame,Stone,Stucco
  • Patio And Porch Features: Covered
  • Roof: Composition
  • Structure Type: House

General Information

  • Carport Spaces: 0
  • Exterior Features: Garden,Lighting,Private Yard
  • Fencing: Full
  • Sewer: Public Sewer
  • Utilities: Cable Available,Electricity Connected

Room Information

Room: Bathroom Full

  • Level: Basement
  • Length: 6
  • Width: 10

Room: Bedroom

  • Level: Basement
  • Length: 13
  • Width: 11

Room: Family Room

  • Level: Basement
  • Length: 26
  • Width: 31
  • Description: Multi purpose Space with plenty of room to entertain

Room: Utility Room

  • Level: Basement
  • Length: 10
  • Width: 20

Room: Bathroom Full

  • Level: Main
  • Features: En Suite Bathroom

Room: Bedroom

  • Level: Main
  • Length: 13
  • Width: 11

Room: Great Room

  • Level: Main
  • Length: 26
  • Width: 31
  • Description: Dramatic vaulted ceiling, tons of natural light

Room: Kitchen

  • Level: Main

Room: Laundry

  • Level: Main
  • Length: 10
  • Width: 20

Room: Bathroom Full

  • Level: Upper
  • Length: 11
  • Width: 13
  • Features: En Suite Bathroom,Primary Suite

Room: Bathroom Full

  • Level: Upper
  • Length: 11
  • Width: 5

Room: Bedroom

  • Level: Upper
  • Length: 18
  • Width: 11

Room: Bedroom

  • Level: Upper
  • Length: 12
  • Width: 13

Room: Bedroom

  • Level: Upper
  • Length: 15
  • Width: 19
  • Features: Primary Suite

860 Union Avenue Neighborhood

Community

80304 (Boulder) Demographics

41
Median Age
2,891
Population Density (per sq. mile)
81%
College Educated
$98,049
Estimated Median Income
7,931
Estimated Total Home Owners
3,417
Estimated Total Renters
70% / 30%
Estimated Owner / Renter Divide
2
Estimated Average Household Size
Community data courtesy of LiveBy, Inc.

Schools

School data courtesy of LiveBy, Inc. School ratings are based on a scale of 1-5, with 5 being the highest rating and 1 being the lowest rating.

860 Union Avenue Monthly Cost

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* All calculations are estimates and provided by Reliance Network, for informational purposes only. Actual amounts may vary. ** Assumes 6.50% APR, 20% down payment, and conventional 30-year fixed rate first mortgage. Rates cited are for instructional purposes only; current rates are subject to change at any time without notice. You should not make any decisions based simply on the information provided. Additional required amounts such as taxes, insurance, homeowner association dues, assessments, mortgage insurance premiums, flood insurance or other such required payments should also be considered. Contact your mortgage company for current rates and additional information. Any mortgage broker or insurance agent that may appear is independent and is not affiliated with, endorsed by, or provided by the MLS.

860 Union Avenue Market Data

Based on the last 30 days in this zip code

$2,469,285
Average List Price
$798
Average Price per Square Foot
43
Properties Sold
109
Average Days on Market
242
Properties for Sale
Calculations provided by Reliance Network

860 Union Avenue History

Date Event Value Agent
6/16/2026Source: REColorado MLS Price Reduction
$2,450,000 -3.0%
5/15/2026Source: REColorado MLS Price Reduction
$2,525,000 -2.7%
4/2/2026Source: REColorado MLS Added to Database
April 02, 2026