3555 4Th St, Boulder, CO

Name: 3555 4Th St, For Sale in Boulder - eXp Realty
Brand: Compass - Boulder
SKU: IR1058738
Price: 7950000 USD

House

For Sale

Listed price in listed location currency (USD).

$7,950,000

453

MLS® IR1058738

Key Facts
Description
Rooms
Map

Key Facts

Type Single Family Residence

Levels Residential

Size 4218 sqft

Garage Yes

Taxes $16,016

Days Active 3

Lot Size

Approx. Age 2021

Avg. Price Per Sqft $1,884

MLS® Number IR1058738

Property Address: 3555 4th St, Boulder, CO, 80304-1703

Average square foot calculated using Size range provided by listing agent.

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.

MLS® NumberIR1058738

Laundry LevelEnsuite

Central VacNo

FireplaceYes

Acreage

Exterior

GarageYes

Approx. Age2021

BasementNone

DrivewayHeated Garage, Oversized

Garage Spaces

Heat

A/C

Heating Fuel

Extras

Price History

-End Date

Not Sold YetSold Price

For Sale

May 11, 2026List Date

$7,950,000List Price

Home Appraisal

This property is estimated to sell between: $2,980,000 and $10,435,000.

Similar properties in this area sold on average for: $2,980,000

Expected to sell in 165 days. Similar properties sold in 168 days. This home has been on eXp Realty for 3 days.

The estimated sale price does not take into account many variables such as recent renovations, type of appliances, school district etc. To get a more accurate estimate please contact agent.

Commute

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Starting Address

Destination Address

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