Judy Pitt

Broker Associate
License#:

$6,800,000

3421 4th St, Boulder, CO 80304  (Sold on )

  • Price Reduced
  • Open House Sat. May 09; 12:00 PM - 04:00 PM
  • New Listing
  • Coming Soon
  • 6 BedBeds
  • 5 BathBaths
  • 5,198 SqftSqft
  • TypeSingle Family
  • Active
  • MLS# 1053821
25 More Schedule

Property Description

Newlands Sanctuary on Mt. Sanitas Open Space Step onto the 600-square-foot deck and look up. Mt. Sanitas rises 1,300 feet from your backyard gate, private access to the Goat Trail. No driving. No parking. Just you, your coffee, and maybe a 4-legged friend who will make sure you don't skip it. This premier property is one of eight homes backing directly to open space. In 21 years, only one has changed hands. Hidden behind a 70-yard tree-lined driveway on a 0.6-acre lot (2.5x standard), this is widely regarded as one of Boulder's best addresses, served by top rated schools.The 5,200-square-foot residence features 20-foot ceilings with west-facing glass framing Mt. Sanitas, white oak floors, two fireplaces, and a library overlooking the property's seven heritage apple trees. Six bedrooms plus office (convertible seventh) include three distinct suites: the primary en-suite with a stunning view; a garden-level walkout in-law addition (2005, 12' ceilings) with separate entrance, private patio, and dedicated office-ideal for multigenerational living or guests-plus a basement suite with whirlpool bath. Outside you will discover a deep wrap-around porch beneath a 60-foot silver maple, flower and vegetable gardens, and the historic Silver Lake Ditch with 12,000 gallons daily water rights. Sundance Film Festival arrives January 2027, venues minutes away providing a chance at an incredible rental income opportunity and under the Augusta Rule, 14 days of rental income may be tax-free. Roof replaced 2019. New carpet. Heated two-car garage. No HOA. No covenants. For those who know Newlands: this is the privacy, the lot, the view, and the trail access that almost never comes to market. For those discovering Boulder for the first time: welcome to the neighborhood the locals covet most.

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Property Details

General

  • Subdivision: Fourth Street 3403 Sub
  • County: Boulder
  • List Date: 03/13/2026
  • Expected Active Date: 03/13/2026
  • DOM: 52
  • Style: Legal Conforming, Contemporary
  • Lot SqFt: 26072
  • Approx Acres: 1
  • Beds: 6
  • Baths: 5.00
  • Full Baths: 2
  • ¾ Baths: 2
  • Half Baths: 1
  • Basement/Foundation: Full, Partially Finished, Daylight
  • Year Built: 1990
  • New construction: NO
  • Sq Ft (total): 5198
  • Garage/Parking Spaces: 2
  • Garage Description: Attached
  • MLS#: 1053821

Interior Features

  • Heating: Forced Air, Hot Water, Zoned, Radiant, 2 or more Heat Sources
  • Cooling: Evaporative Cooling, Ceiling Fan(s)
  • Fireplace: Two or More, Gas, Gas Log, Living Room, Family Room

Exterior Features

  • Construction: Frame, Wood Siding
  • Roof: Composition
  • Type: Single Family Residence
  • Outdoor Features: Sprinkler System, Oversized Garage
  • Fences: Partial, Fenced, Wood, Chain Link
  • Road Access: City Street
  • Waterfront: NO
  • Views: Hills

Schools

  • School District: Boulder Valley Dist RE2
  • Elementry: Foothill
  • Middle/Jr: Centennial
  • High School: Boulder

Financial Considerations

  • Tax Year: 2025
  • Tax Amount: $26030

Utilities

  • Utilities: Natural Gas Available, Electricity Available, Cable Available, High Speed Avail
  • Water/Sewer: Public Sewer
  • Water: City
 

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