Residential · Active

855 Union Avenue

Boulder, CO 80304

5 Beds · 5 Baths · 4,032 Sq Ft

$3,100,000

Single Family

Property Type

0.17 acres

Lot Size

2026

Year Built

$769

Price per Sq Ft

2

Parking Spaces

IR1070294

MLS #

About This Property

OPEN HOUSE SAT 10/24 & SUN 10/25 11-1PM. 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

13 days on market

Listed by Deanna Franco · milehimodern - Boulder · 7204225131

Last updated: 10/21/2026 2:04 PM · Source: REcolorado®, MLS#: IR1070294

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Property Details

Key Details

Property Type Residential
Sub Type Single Family Residence
Status Active
Price per Sq Ft $769
Subdivision Paris Sub
MLS # IR1070294
Days on Market 13
Bedrooms 5
Full Baths 2
Three-Quarter Baths 3

More Details

Year Built 2026
Lot Size (Sq Ft) 7,216
Acres 0.17
HOA No
Annual Taxes $0
State CO
County Boulder
Zoning RES

Interior

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

Exterior & Parking

Garage Yes
Garage Spaces 2
Roof Composition, Membrane

Building & Lot

Basement Sump Pump
Lot Features Sprinklers In Front
Architectural Style Contemporary, Rustic Contemporary
Levels Two
Construction Wood Siding
Sewer Public Sewer
Water Source Public

Location

Price History

DateEventPrice
10/8/2026 Listed for sale
Source: REcolorado® #IR1070294
$3,100,000 +106.7% $769/sqft
6/13/2024 Sold
Source: REcolorado® #IR1008933
$1,500,000 -9.1% $372/sqft
4/29/2024 Listed for sale
Source: REcolorado® #IR1008933
$1,650,000 $409/sqft

Based on information submitted to the MLS GRID as of October 21, 2026 at 6:00 PM MDT. 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.

Listing information last updated October 21, 2026 at 2:04 PM.

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