Open House Sat, Sep 12th 12:00 PM - 4:00 PM - Views
Address
3421 4th Street, Boulder, CO
Price
$ 6,800,000
Property Attributes
- MLS#IR1053821
- TypeSingle Family
- Listing Status Active
- CountyBOULDER
- CityBoulder
- NeighborhoodFourth Street 3403 Sub
- Zip80304
- StyleContemporary
- Year Built1990
- Taxes$ 26030
- Price$ 6,800,000
- Bedrooms6
- Full Bathrooms4
- Half Bathrooms1
- Sqr Footage5198
- Lot Size0.6 Acres
Data Source:
REColorado (MTOMLS)
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.
| Elementary School | Middle School | High School |
|---|---|---|
| Foothill Elementary School | Centennial Middle School | Boulder High School |
| Price History | |
|---|---|
| 3/13/2026 | Listed $6,800,000 |
General Features
| Sewer | Public Sewer |
|---|---|
| Heating | Forced Air,Hot Water,Radiant |
| Cooling | Ceiling Fan(s),Evaporative Cooling |
| Utilities | Cable Available,Electricity Available,Internet Access (Wired),Natural Gas Available |
| Possession | Closing/DOD |
| Roof | Composition |
| Appliances | Dishwasher,Disposal,Down Draft,Microwave,Oven,Refrigerator,Self Cleaning Oven |
| Zoning | SFR |
| Garage Spaces | 2 |
| Patio/Porch Features | Deck,Patio |
| Architectural Style | Contemporary |
| Security Features | Smoke Detector(s) |
| Construction Materials | Frame,Wood Siding |
| Exclusions | Furnishings and Personal Property,Water Rights Included |
| Year Built | 1990 |
| View | Mountain(s) |
| Levels | Three Or More |
| Property Subtype | Single Family Residence |
| Tax Year | 2025 |
| County | Boulder |
| Property Type | Residential |
| HOA | No |
| Attached Garage | Yes |
| Subdivision Name | Fourth Street 3403 Sub |
| Facing Direction | East |
| Possible Use | Residential |
| Full Baths | 2 |
| Status | Active |
| Directions | From Broadway,turn left on Juniper Ave. Turn right on 4th St. Property on left side. |
| High School | Boulder |
| City | Boulder |
| High School District | Boulder Valley RE 2 |
| Lot Size Square Feet | 26072 |
| Listing Terms | 1031 Exchange,Cash,Conventional |
| Spa Features | Bath |
| Elementary School | Foothill |
| Tax Annual Amount | 26030 |
| Middle/Junior High School | Centennial |
| Concessions | No |
| Structure Type | House |
| Standard Status | Active |
| Occupancy Type | Owner |
| Elementary School District | Boulder Valley RE 2 |
Interior Features
| Interior Amenities | Eat-in Kitchen,Five Piece Bath,Open Floorplan,Vaulted Ceiling(s),Walk-In Closet(s) |
|---|---|
| Basement | Daylight,Full |
| Fireplace Features | Family Room,Gas,Gas Log,Living Room |
| Basement (Y/N) | Yes |
| Above Grade Finished Area | 3927 |
| Half Baths | 1 |
| 3/4 Baths | 2 |
| Total Bedrooms | 6 |
| Below Grade Finished Area | 1095 |
| Main Level Bedrooms | 1 |
| Main Level Bathrooms | 2 |
| Total Baths | 5 |
Exterior Features
| Vegetation | Wooded |
|---|---|
| Fencing | Fenced,Partial |
| Parking Features | Oversized |
| Lot Features | Ditch,Open Space,Rolling Slope,Sprinklers In Front |
| Water Source | Public |
| Total Parking | 2 |
| Building Area Total | 5198 |
| Lot Size Acres | 0.6 |
| Road Surface Type | Paved |
| Road Frontage Type | Public |
Amenities
- Foreclosure
- Views
- Short Sale
- New Construction
- Adult 55+
- Lease To Own
- No HOA Fees
- Furnished
- Primary On Main
- Air Conditioning
- Seller Finance
- Green
- Fixer Upper
- Horse
- Golf
- Fireplace
- Deck
- Garage
- Basement
- Pool
Property vs Single Family Average in 80304
Price
Taxes
Year Built
Visits
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