3421 4th St Boulder, CO 80304
Newlands NeighborhoodEstimated payment $38,221/month
Highlights
- 0.6 Acre Lot
- Open Floorplan
- Recreation Room
- Foothill Elementary School Rated A
- Deck
- Wooded Lot
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 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.
Listing Agent
Colorado Realty 4 Less, LLC Brokerage Phone: 9705317448 License #100087561 Listed on: 03/13/2026
Open House Schedule
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Saturday, May 9, 202612:00 to 4:00 pm5/9/2026 12:00:00 PM +00:005/9/2026 4:00:00 PM +00:00Add to Calendar
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Sunday, May 10, 202612:00 to 4:00 pm5/10/2026 12:00:00 PM +00:005/10/2026 4:00:00 PM +00:00Add to Calendar
Home Details
Home Type
- Single Family
Est. Annual Taxes
- $26,030
Year Built
- Built in 1990
Lot Details
- 26,136 Sq Ft Lot
- Open Space
- Partially Fenced Property
- Wood Fence
- Chain Link Fence
- Wooded Lot
Parking
- 2 Car Attached Garage
- Garage Door Opener
Home Design
- Composition Roof
- Wood Siding
Interior Spaces
- 5,198 Sq Ft Home
- 4-Story Property
- Open Floorplan
- Ceiling Fan
- Gas Fireplace
- Great Room
- Living Room with Fireplace
- Dining Room
- Recreation Room
- Laundry Room
Kitchen
- Eat-In Kitchen
- Self-Cleaning Oven
- Down Draft Cooktop
- Microwave
- Dishwasher
- Disposal
Bedrooms and Bathrooms
- 6 Bedrooms
- Walk-In Closet
- Primary Bathroom is a Full Bathroom
- Bathtub and Shower Combination in Primary Bathroom
- Spa Bath
Basement
- Basement Fills Entire Space Under The House
- Natural lighting in basement
Outdoor Features
- Deck
- Patio
Schools
- Foothill Elementary School
- Centennial Middle School
- Boulder High School
Utilities
- Evaporated cooling system
- Forced Air Zoned Heating System
- Radiant Heating System
- Hot Water Heating System
- Water Rights
- Cable TV Available
Community Details
- No Home Owners Association
- Fourth Street 3403 Sub Subdivision
Listing and Financial Details
- Assessor Parcel Number R0108936
Map
Home Values in the Area
Average Home Value in this Area
Tax History
| Year | Tax Paid | Tax Assessment Tax Assessment Total Assessment is a certain percentage of the fair market value that is determined by local assessors to be the total taxable value of land and additions on the property. | Land | Improvement |
|---|---|---|---|---|
| 2025 | $26,030 | $272,994 | $196,356 | $76,638 |
| 2024 | $26,869 | $272,994 | $196,356 | $76,638 |
| 2023 | $26,402 | $305,728 | $216,289 | $93,123 |
| 2022 | $23,101 | $248,761 | $153,407 | $95,354 |
| 2021 | $22,028 | $255,920 | $157,822 | $98,098 |
| 2020 | $17,338 | $199,185 | $145,646 | $53,539 |
| 2019 | $17,073 | $199,185 | $145,646 | $53,539 |
| 2018 | $15,932 | $183,758 | $120,240 | $63,518 |
| 2017 | $15,433 | $203,155 | $132,932 | $70,223 |
| 2016 | $14,091 | $162,774 | $105,072 | $57,702 |
| 2015 | $13,343 | $112,602 | $44,178 | $68,424 |
| 2014 | $9,468 | $112,602 | $44,178 | $68,424 |
Property History
| Date | Event | Price | List to Sale | Price per Sq Ft |
|---|---|---|---|---|
| 03/13/2026 03/13/26 | For Sale | $6,800,000 | -- | $1,308 / Sq Ft |
Purchase History
| Date | Type | Sale Price | Title Company |
|---|---|---|---|
| Special Warranty Deed | -- | None Listed On Document | |
| Warranty Deed | $1,750,000 | -- | |
| Deed | $11,000 | -- | |
| Deed | -- | -- | |
| Deed | $127,000 | -- | |
| Deed | -- | -- |
Mortgage History
| Date | Status | Loan Amount | Loan Type |
|---|---|---|---|
| Previous Owner | $999,900 | Purchase Money Mortgage |
Source: IRES MLS
MLS Number: IRE1053821
APN: 1461242-13-002
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Based on information submitted to the MLS GRID
Listings courtesy of IRES MLS as distributed by MLS GRID
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Ask me questions while you tour the home.