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  3. Interior
  4. Exterior
  5. Property
  6. Schools
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Status: Active

800 Kalmia Ave 
Boulder, CO 80304

$5,300,000

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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.
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Bedrooms
4
Baths
5
House Size
3,982 sqft
Year Built
1981
Lot Size
0.47 ac
School District
Boulder Valley RE 2

Location

Market Insights

In the last 30 days, homes for sale in 80304, Boulder, CO were on the market for a median of 32 days and 10% of homes sold above list price.

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Interior Information

appliances
Bar Fridge
Dishwasher
Disposal
Double Oven
Dryer
Microwave
Oven
Refrigerator
Washer
basement
None
cooling
Central Air
features
Eat-in Kitchen
Kitchen Island
Open Floorplan
Pantry
Vaulted Ceiling(s)
Walk-in Closet(s)
fireplace
Gas
Living Room
flooring
Tile
Wood
heating
Radiant
view
Mountain(s)
window features
Skylight(s)

Exterior Information

fence
Fenced
Partial
patio and porch
Patio
roof
Composition

Property Information

construction
Wood Siding
lot
Wooded
Level
parking
Oversized
security features
Smoke Detector(s)
sewer
Public Sewer
subdivision name
Kalmia
utilities
Electricity Available
Natural Gas Available
water source
Public
  • Listed By The Zach Zeldner Team
  • (720) 480-7650
  • Compass - Boulder
  • (303) 487-5472
  • MLS IR1041862

Tax History

Date

Property Tax

Land

Additions

Tax Assessment

2024$14,540 (-3.3%)$2,271,960$252,440$2,524,400 (0%)
2023$15,033 (+39.8%)$2,271,960$252,440$2,524,400 (+42.9%)
2022$10,757 (0%)$1,590,030$176,670$1,766,700 (0%)
2021$10,757 (+4.9%)$1,590,030$176,670$1,766,700 (+12.5%)
2020$10,257$1,256,000$314,100$1,570,100

Tax data provied by Attom


Monthly Payments Calculator

Estimated Monthly Cost

$29,436

30 year fixed·6.9% interest rate
Principal & Interest
$27,925
Property Taxes
$1,212
Home Insurance
$300
HOA Fees
$0
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*All calculations are estimates and provided for informational purposes only. Actual amounts may vary.
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