800 Kalmia Avenue
Boulder, CO, 80304 $ 5,300,000
Bedrooms4 Baths4.2 Sq 3,982 Monthly Estimate*
$ 33,065
Listed by Compass - Boulder
for $5,300,000 with 4 bedrooms and 4 full baths, 2 half baths. This 3,982 square foot home was built in 1981 on a lot size of 0.47.
Tucked behind mature trees on one of North Boulder's most private streets, 800 Kalmia Avenue sits on a half-acre lot and is a newly transformed modern retreat that blends warmth, precision, and timeless design. Reimagined in 2024, the home showcases refined materials, elevated finishes, and foothill views throughout. A welcoming entry with custom built-ins and hidden storage sets the tone for the craftsmanship inside. At the center, a light-filled great room features wide-plank white oak floors with radiant heat, a paneled fireplace, skylights, and full-height glass doors that open to the outdoors. The chef's kitchen includes a Bluestar range, Thermador refrigeration, a marble-topped island, and unlacquered brass hardware. A walk-through butler's pantry adds prep and storage with an ice maker, beverage drawers, and wine storage. From the kitchen, a Dutch door and sliders connect to the backyard, where curated landscaping, a flat lawn, and foothill views create a private sanctuary. Flexible main-level spaces include a family room with built-ins, a stylish powder room with marble sink, and a guest suite that adjoins a versatile office, music room, or den. Upstairs, a landing leads to three en suite bedrooms. The vaulted primary suite captures southern light and mountain views. Its spa-like bathroom offers a soaking tub, steam shower, dual marble vanity, bidet toilet, and walk-in closet. Two additional bedrooms feature custom details such as Zellige tilework, bespoke vanities, and built-in bunk beds. The newly constructed detached three-car garage doubles as a multifunctional extension with a recreation room, kitchenette, laundry and gear-washing area. A stone patio just off the kitchen is plumbed for an outdoor fireplace, perfect for evenings under the stars. Set in a quiet enclave minutes from North Boulder's trailheads, parks, and shopping, 800 Kalmia Avenue offers refined living with privacy, versatility, and enduring design.
See more
FeaturesInteriorInterior Amenities Eat-in Kitchen Kitchen Island Open Floorplan Pantry Vaulted Ceiling(s) Walk-In Closet(s)
Basement None
Flooring Tile Wood
Fireplace Features Gas Living Room
Basement (Y/N) N
Window Features Skylight(s)
Above Grade Finished Area 3982
Half Baths 2
3/4 Baths 2
Total Bedrooms 4
Below Grade Finished Area 0
Main Level Bedrooms 1
Main Level Bathrooms 2
Total Baths 6
See more
GeneralSewer Public Sewer
Heating Radiant
Cooling Central Air
Utilities Electricity Available Natural Gas Available
Possession Closing/DOD
Roof Composition
Appliances Bar Fridge Dishwasher Disposal Double Oven Dryer Microwave Oven Refrigerator Washer
Zoning RES
Garage Spaces 3
Patio/Porch Features Patio
Security Features Smoke Detector(s)
Construction Materials Wood Siding
Exclusions Seller's personal property.
Year Built 1981
View Mountain(s)
Levels Two
Property Subtype Single Family Residence
Tax Year 2024
Ownership Individual
County Boulder
Property Type Residential
HOA N
Subdivision Name Kalmia
Facing Direction West
Possible Use Residential
Full Baths 2
Status Active
High School Boulder
City Boulder
High School District Boulder Valley RE 2
Lot Size Square Feet 20354
Listing Terms Cash Conventional
Elementary School Foothill
Tax Annual Amount 14540
Middle/Junior High School Centennial
Concessions No
Virtual Tour https://youtu.be/H4jYrKukHWQ
Structure Type House
Standard Status Active
Occupancy Type Owner
Elementary School District Boulder Valley RE 2
See more
ExteriorVegetation Wooded
Fencing Fenced Partial
Parking Features Oversized
Lot Features Flood Zone Level
Water Source Public
Total Parking 3
Building Area Total 3982
Lot Size Acres 0.47
See more
* Excluded FeaturesAffordability Calculator
- Monthly Principal & Interest
- $33,065
- Monthly Property Taxes
- $1,212
- Monthly Home Insurance
- --
Default based on a 30-year fixed rate of 6.375% 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 Boulder, CO
Average List Price $2,615,222
Percent of Sale Price 51%
About Boulder, CO 102,151 Population
6% Since 2002
$ 65,436 Median Income
31.88 Median Age
18% Households with Children
Trends Information provided by ATTOM Data Solutions.
1955676 Elementary School
1955871 Middle School
Boulder High School High School
Pricing History| Date | Price | Price Change | Description |
|---|
| 8/20/2025 | $5,300,000 | | Listed Price |