3421 4th St, Boulder, CO 80304
- Beds
- 6
- Baths
- 5
- Sqft
- 5,022
- Garage
- Yes
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Overview
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.
Location
Full feature list
Basic info
- Property type
- House
- Number of bedrooms
- 6
- Number of bathrooms
- 5
- Square feet
- 5,022
- Lot size (acres)
- 0.60
- Year built
- 1990
Garage and parking
- Garage parking spaces
- 2
Utilities
- Heating
- 2 or more Heat Sources, Radiant, Zoned, Hot Water, Forced Air
- Cooling
- Ceiling Fans, Evaporative Cooling
- Sewer
- Public Sewer
- Water
- Public Water
Taxes
- Tax Annual Amount (2025)
- $26,030
Public schools
Disclaimer: Certain information displayed on this listing has been derived from parties other than Final Offer, LLC. Information provided and their sources have been deemed reliable, but accuracy of information is not guaranteed and therefore should be independently verified.
Sourced from: IRES MLS MLS®#: 1053821 Last checked: …

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