8478 Haystack Court
Niwot, CO, 80503 $ 2,450,000
Bedrooms4 Baths5.1 Sq 5,967 Monthly Estimate*
$ 15,085
Listed by Compass - Denver
for $2,450,000 with 4 bedrooms and 5 full baths, 1 half bath. This 5,967 square foot home was built in 1990 on a lot size of 52686.
Tucked away at the end of a quiet cul-de-sac—shared with just one other home—this 1.36-acre Niwot estate offers rare privacy, space, and serenity. Surrounded by over 120 mature trees, the property feels like a secluded retreat while still being close to everything. Offered for the first time in 25+ years, this home has been meticulously maintained and thoughtfully designed for both everyday living and entertaining. Inside, the main level features a functional, flowing layout with three fireplaces anchoring the family room, formal living room, and main-floor primary suite. The spacious kitchen opens to the main living areas and includes a cozy eat-in nook, while a formal dining room provides space for gatherings and special occasions. A dedicated office with an attached half bath adds flexibility. Step out onto the covered walk-out deck and take in the beautifully designed backyard, an extension of the home’s living space. Upstairs, each of the three bedrooms includes its own en-suite bathroom, offering comfort and privacy. The walkout basement provides an open entertaining area, ¾ bath, workshop, storage, and direct access to the backyard. Outside, the property transforms into a private resort with a pool & built in hot tub, putting green, tiki bar, multiple patios, and expansive lawn space perfect for entertaining or relaxing in total privacy. Additional highlights include a three-car garage, multiple outdoor living spaces, and exceptional care throughout. A rare opportunity to own a private, resort-style property in one of Niwot's most desirable settings.
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Single Family Coming Soon
FeaturesInteriorInterior Amenities Breakfast Bar Built-in Features Central Vacuum Eat-in Kitchen Entrance Foyer Five Piece Bath Granite Counters High Ceilings Kitchen Island Open Floorplan Pantry Primary Suite Radon Mitigation System
Basement Finished Full Walk-Out Access
Flooring Carpet Tile Wood
Total Fireplaces 3
Fireplace Features Family Room Living Room Primary Bedroom
Basement (Y/N) Y
Above Grade Finished Area 4391
Half Baths 1
1/4 Baths 0
3/4 Baths 1
Laundry Features In Unit
Total Bedrooms 4
Below Grade Finished Area 1576
Main Level Bedrooms 1
Main Level Bathrooms 2
Total Baths 6
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GeneralSewer Public Sewer
Heating Forced Air
Cooling Central Air
Roof Composition
Appliances Cooktop Dishwasher Dryer Microwave Refrigerator Washer Wine Cooler
Zoning RR
HOA Fee 206
Garage Spaces 3
Association Fee Includes Snow Removal Trash
Patio/Porch Features Covered Deck Patio
Pool Features Outdoor Pool
Security Features Security System
Construction Materials Frame
Exclusions Sellers personal Property
Year Built 1990
Levels Two
Property Subtype Single Family Residence
Tax Year 2025
Ownership Individual
Assoc Fee Paid Per Monthly
County Boulder
Property Type Residential
HOA Y
Attached Garage Y
Subdivision Name Cottonwood Hills
Full Baths 4
Status Coming Soon
High School Niwot
City Niwot
Association Name Somerset HOA
Senior Community Y/N N
High School District St. Vrain Valley RE-1J
Lot Size Units Acres
Lot Size Square Feet 2295002160
Carport Spaces 0
Listing Terms Cash Conventional Jumbo
Elementary School Niwot
Tax Annual Amount 14130
Middle/Junior High School Sunset
Structure Type House
Standard Status Coming Soon
Occupancy Type Owner
Middle/Junior School District St. Vrain Valley RE-1J
Elementary School District St. Vrain Valley RE-1J
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ExteriorExterior Amenities Balcony Fire Pit Garden Private Yard Spa/Hot Tub
Fencing Full
Parking Features Concrete
Lot Features Cul-De-Sac
Water Source Public
Total Parking 3
Lot Size Area 52686
Building Area Total 5967
Lot Size Acres 52686
Road Surface Type Paved
Road Frontage Type Public
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* Excluded FeaturesAffordability Calculator
- Monthly Principal & Interest
- $15,085
- Monthly Property Taxes
- $1,178
- Monthly Home Insurance
- --
Default based on a 30-year fixed rate of 6.25% with 20% down. The estimated payment is offered for convenience and is not an offer of credit. Due to market fluctuations, interest rates are subject to change at any time and without notice. Your individual rate may vary. Rates may differ for FHA, VA or jumbo loans.
Learn more about how to save NearbySingle family listings in Niwot, CO
Average List Price $2,677,906
Percent of Sale Price 9%
About Niwot, CO 3,948 Population
1% Since 2002
$ 108,937 Median Income
51.38 Median Age
39% Households with Children
Trends Information provided by ATTOM Data Solutions.
3043345 Elementary School
910867 Middle School
Niwot High School High School
Pricing History| Date | Price | Price Change | Description |
|---|
| 4/17/2026 | $2,450,000 | | Listed Price |