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3421 4th St, Boulder, CO 80304

Boulder
Local realty services provided by:CENTURY 21 CapRock Real Estate
3421 4th St,Boulder, CO 80304
$6,800,000
  • 6 Beds
  • 5 Baths
  • 5,198 sq. ft.
  • Single family
  • Active
Upcoming open houses
  • Sat, Mar 14
    12:00 pm - 04:00 pm
Listed by: kathleen haas
Office: colorado realty 4 less, llc
MLS#:1053821
Source:IRES

Price summary

  • Price:$6,800,000
  • Price per sq. ft.:$1,308.2

About this home

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...

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Home facts

  • Year built:1990
  • Listing ID #:1053821
  • Added:1 day(s) ago
  • Updated:March 14, 2026 at 02:45 AM

Rooms and interior

  • Bedrooms:6
  • Total bathrooms:5
  • Full bathrooms:2
  • Half bathrooms:1
  • Dining Description:Eat-in Kitchen, Separate Dining Room
  • Kitchen Description:Dishwasher, Disposal, Down Draft, Gas Range, Microwave, Refrigerator, Self Cleaning Oven
  • Basement Description:Daylight, Full, Partially Finished
  • Living area:5,198 sq. ft.

Heating and cooling

  • Cooling:Ceiling Fan(s), Evaporative Cooling
  • Heating:2 or more Heat Sources, Forced Air, Hot Water, Radiant, Zoned

Structure and exterior

  • Roof:Composition
  • Year built:1990
  • Building area:5,198 sq. ft.
  • Lot area:0.6 Acres
  • Lot Features:Abuts Ditch, Abuts Public Open Space, Deciduous Trees, Evergreen Trees, House Faces East, Paved, Sloping Lot, Water Rights Included, Wooded
  • Architectural Style:Contemporary, Legal Conforming
  • Construction Materials:Frame, Wood Siding
  • Exterior Features:Deck, Patio, Sprinkler System
  • Levels:Four

Schools

  • High school:Boulder
  • Middle school:Centennial
  • Elementary school:Foothill

Utilities

  • Water:City
  • Sewer:Public Sewer

Finances and disclosures

  • Price:$6,800,000
  • Price per sq. ft.:$1,308.2
  • Tax amount:$26,030

Features and amenities

  • Appliances:Dishwasher, Disposal, Down Draft, Fire Alarm, Gas Range, Microwave, Refrigerator, Self Cleaning Oven
  • Amenities:Cathedral Ceiling(s), Eat-in Kitchen, Open Floorplan, Separate Dining Room, Walk-In Closet(s)

Parking

  • Parking description:Garage Door Opener, Oversized Garage
  • Garage spaces:2
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