3555 4th Street, Boulder, CO 80304
- $8,000,000
- 4
- BD
- 5
- BA
- 4,218
- SqFt
- Sold Price
- $8,000,000
- List Price
- $7,950,000
- Closing Date
- Jul 30, 2026
- Type
- Single Family Residential
- Property Sub Type
- Single Family Residence
- Status
- CLOSED
- MLS Number
- IR1058738
- Architectural Style
- Contemporary
- Structural Style
- Contemporary
- Bedrooms
- 4
- Bathrooms
- 5
- Baths Half
- 1
- Sqft Total
- 4,218
- Neighborhood
- Silver Lake Sub
- Year Built
- 2021
Property Description
Set into the foothills at the base of Mount Sanitas, 3555 4th Street is a study in organic modernism, where limestone, steel, & expanses of glass blur the line between home & landscape. Designed by Fanas Architecture, the home is a work of architectural integrity, realized at the highest level of craft. A smooth limestone spine wall threads through the home, with rough-hewn limestone as a counterpoint. In the great room, exposed steel I-beams frame 24-foot retractable walls of glass, opening to north & south-facing patios. European white oak with radiant heat runs underfoot, beneath a floating wood-plank ceiling washed in cove lighting. The chef's kitchen by EKD features custom walnut cabinetry, a hand-laid mosaic backsplash, Dornbracht fixtures, & Gaggenau appliances. Built-ins flow through the butler's pantry, mudroom, & laundry. A main-floor flex suite serves as primary, office, or guest, complete with walk-out patio, walnut walk-in closet, & Japanese-inspired bath in Vola fixtures. The primary suite opens to the second-story deck through wall-to-wall sliding glass. Behold a coved wood plank ceiling, pin lights, and sculptural pendants. The primary bath is a masterful blend, anchored by a freestanding MTI resin tub, with a steam shower, bespoke cabinetry, alabaster sconces, & a custom walk-in closet. A loft with a wet bar adjoins two ensuite bedrooms. Over 3,200 square feet of finished exterior living space spans three levels, redefining outdoor living in Boulder. The south terrace pairs an overhang & electronic louvres with a fire pit & water features. Steel stairs rise to the upper deck, unveiling a hot tub, cantilevered overhang, and Sanitas to the west. Above, a rooftop deck opens to panoramic views. Lutron lighting on Control4, radiant heat across nine zones, full solar array, & two EV-charging rough-ins. Steps from the Goat trail and tucked into one of Boulder's most iconic neighborhoods, 3555 4th Street is a triumph of detail, intention, & place.
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Additional Information
- View
- Mountain(s)
- Lot Size Acres
- 0.35000000000000003
- Lot Size Sq Ft
- 15,445
- Tax Amount
- $16,016
- Tax Year
- 2024
- Exterior Features
- Balcony
- Sewer
- Public Sewer
- Flooring
- Tile, Wood
- Basement Type
- None
- Heating
- Forced Air, Radiant
- Cooling
- Central Air
- Fireplace Features
- Great Room, Other
- School District
- Boulder Valley RE 2
- Elementary School
- Foothill
- Middle Or Junior School
- Centennial
- High School
- Boulder
- Parking Total Searchable
- 3
- Parking Features
- Heated Garage, Oversized
Mortgage Calculator
Courtesy of Compass - Boulder . 7204700910
Selling Office: milehimodern - Boulder.