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855 Union Avenue, Boulder CO 80304
855 Union Avenue, Boulder CO 80304
Colorado>Boulder>North Wonderland

855 Union AvenueBoulder, CO 80304

For Sale

$3,100,000

Smart Buyer Rebate $31,000

Striking new modern farmhouse in coveted North Boulder, steps from Wonderland Lake, open space, trails + bike paths, minutes to Lucky's Market, cafes, restaurants + thriving NoBo Art District. Designed by Osmosis Architecture + built by Porchfront Homes, this 5-bed, 5-bath residence blends sophisticated architecture, curated finishes + exceptional energy efficiency. Designed to achieve Net-Zero HERS performance, w/high-performance construction, 15.2 kW solar system designed to offset annual energy consumption + 220V garage outlet for EV charging. Compare the possibilities: distinctive architecture, generous finished SF + an established neighborhood free from ongoing construction-all at a compelling price per SF relative to nearby luxury new homes. Soaring ceilings, expansive windows + wide-plank oak floors create light-filled interiors w/effortless flow between living, dining + entertaining spaces. Dramatic fireplace anchors the great room. Chef's kitchen features rift-cut cabinetry, contrasting black island, waterfall-edge Calacatta quartz, champagne bronze accents + Thermador appliances including 36" induction range. LaCantina folding kitchen windows open to a patio bar, creating seamless indoor-outdoor living. Walk-in pantry + mudroom w/custom built-ins add everyday functionality. Main-floor office w/adjacent 3/4 bath offers flexibility. Upstairs, 3 bedrooms + 3 baths include a serene primary suite w/custom walk-in closet + spa-inspired bath featuring soaking tub + oversized steam shower. Versatile loft for lounging or working from home + convenient upper-level laundry w/folding counter + cabinetry. Finished lower lvl offers exceptional guest + entertaining space w/expansive rec room, custom wet bar w/full-size refrigerator + dishwasher, 2 bedrooms + 3/4 bath. An additional 445 SF of dedicated basement storage for gear, outdoor equipment + household & seasonal essentials. Landscaped grounds w/irrigation + fully fenced yard

Listed by Deanna Franco

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License #IRP11191

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milehimodern - Boulder

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720-422-5131

Last updated October 26, 2026

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Source: REColorado #IR1070294

Listing Facts

  • TypeSingle-family
  • NeighborhoodNorth Wonderland
  • Bedrooms5
  • Bathrooms5
  • Days on Prevu23
  • Size4,032 sqft
  • Price per sqft$769

Amenities

  • Dishwasher
  • Private Outdoor Space
  • Air Conditioning
  • Parking

Location

Mortgage Calculator

Listing History

10/10/2026
Status changed to Active
$3,100,000
10/09/2026
Price Decreased
$3,100,000
10/08/2026
Listed by milehimodern - Boulder
$3,256,000
  1. 10/10/2026$3,100,000
    Status changed to Active
  2. 10/09/2026$3,100,000
    Price Decreased
  3. 10/08/2026$3,256,000
    Listed by milehimodern - Boulder

Property Details for 855 Union Avenue

Exterior

Construction

  • Property Condition: New Construction
  • Roof: Composition, Membrane
  • Structure Type: House
  • Year Built: 2026
  • Architectural Style: Contemporary, Rustic
  • Construction Materials: Frame

Features

  • Direction Faces: North
  • Fencing: Fenced
  • Patio And Porch Features: Patio
  • Road Frontage Type: Public
  • View: Mountain(s)

Measurements

  • Building Area Total: 4,477
  • Lot Features: Sprinklers In Front
  • Lot Size Acres: 0.17
  • Lot Size Square Feet: 7,216

Financial

Taxes

  • Parcel Number: R0618277
  • Tax Year: 2025

Interior

Features

  • Appliances: Bar Fridge, Dishwasher, Disposal, Double Oven, Microwave, Oven, Refrigerator
  • Fireplace Features: Electric, Living Room
  • Flooring: Tile, Wood
  • Interior Features: Five Piece Bath, Kitchen Island, Open Floorplan, Pantry, Radon Mitigation System, Vaulted Ceiling(s), Walk-In Closet(s), Wet Bar

Measurements

  • Living Area: 4,032

Rooms

  • Basement: Sump Pump
  • Has Basement: Yes
  • Bathrooms Full: 2
  • Bathrooms Three Quarter: 3
  • Bathrooms Total Integer: 5
  • Bedrooms Total: 5
  • Main Level Bathrooms: 1

Other

General

  • Exclusions: Seller's personal property + all staging items.

Location

  • Subdivision Name: Paris Sub

Parking

Parking

  • Attached Garage: Yes
  • Garage Spaces: 2
  • Parking Total: 2

Schools

Elementary School

  • Elementary School: Foothill
  • Elementary School District: Boulder Valley RE 2

High School

  • High School: Boulder
  • High School District: Boulder Valley RE 2

Middle or Junior School

  • Middle Or Junior School: Centennial

Utilities

Equipment

  • Cooling: Ceiling Fan(s), Central Air
  • Heating: Forced Air, Heat Pump
  • Laundry Features: In Unit
  • Sewer: Public Sewer
  • Utilities: Cable Available, Electricity Available, Internet Access (Wired)
  • Water Source: Public

Frequently Asked Questions

How many bedrooms and bathrooms does this single-family home have?

There are 5 bedrooms and 5 bathrooms in this single-family home at 855 Union Avenue.

What schools are nearby to 855 Union Avenue?

Nearby schools include the Foothill Elementary School, Centennial Middle School, and Boulder High School.

Does this single-family home have parking?

Yes, there are 2 parking spaces available for 855 Union Avenue.

How does 855 Union Avenue compare to other single-family homes in North Wonderland?

This single-family home is listed 9% above the average price for single-family homes in North Wonderland and has been on the market for 134 less days than the typical home in this area.

What is the square footage on this single-family home?

According to the MLS, this listing is 4,032 sqft.

855 Union Avenue is a 5-bedroom, 5-bath single-family home for sale in Boulder CO 80304. On Prevu for 23 days at $3,100,000. This includes a recent price decrease of $156,000. This property features 4,032 square feet of living space, located in North Wonderland. The median listing price for single-family homes in this area is $1,938,471. Nearby schools include Foothill Elementary School, Centennial Middle School, and Boulder High School. The home offers private outdoor space, dishwasher, air conditioning, and parking. Explore more single-family home listings in Boulder.

The content relating to real estate for sale in this Web site comes in part from the Internet Data eXchange ("IDX") program of METROLIST, INC., DBA RECOLORADO® Real estate listings held by brokers other than Prevu are marked with the IDX Logo. This information is being provided for the consumers' personal, non-commercial use and may not be used for any other purpose. All information subject to change and should be independently verified.

Full MLS Disclaimers

Rebate estimate is indicative only and based on listing price and estimated buyer's agent commission paid by owner, if applicable. Final rebates are subject to Terms of Use and may vary due to final negotiated transaction terms.