503 Kalmia Avenue

Boulder, CO 80304 — Boulder County — Foothills Neighborhood

Residential  $4,000,000  Active  Listing# IR1039841  

5 beds    4 baths    5381.00 sqft    Lot size: 24794.00 sqft    0.57 acres    1978 build   

 



  Showing Request        
Updated: 09-27-2025 04:05pm

  Property Description

Behind a dramatic illuminated gate on a lush 0.57-acre lot, this architecturally refined residence was remodeled by renowned architect Harvey Hine and embodies the pinnacle of modern luxury and design. A striking wood exterior, standing seam metal roof, and grand slate patio set the tone for the sophisticated living experience within. Enter through an oversized pivoting wood door into a sun-drenched great room with soaring vaulted ceilings, a statement fireplace, and warm maple hardwood flooring. Walls of glass frame the open-concept living space, seamlessly connecting to an expansive rear deck-an entertainer's dream. The chef's kitchen features custom cabinetry, waterfall stone island, tile backsplash, walk-in pantry, a Wolf range, and a Sub-Zero refrigerator-offering both form and function in equal measure. A cozy library lounge leads to a versatile home office or fifth bedroom with direct access to the front patio. The main-level primary suite is a private retreat with a generous walk-in closet and a spa-inspired en suite bathroom. On the lower level, a fully finished space includes a media room, fitness area, and guest suite-perfect for everyday living or hosting visitors. The beautifully landscaped grounds are surrounded by 40-50' evergreens and enhanced by natural boulders, stone patios, a seasonal ditch, water feature, and multiple serene seating areas. A bonus heated studio offers flexible use as a gym, art studio, or private office. Additional highlights include an attached two-car garage, ample guest parking, and a show stopping gated driveway. Located in the coveted Newlands neighborhood with close proximity to North Boulder shops, downtown, open space, hiking trails, and top-rated schools, this extraordinary home offers the ultimate blend of luxury, privacy, and convenience. Be sure to view the virtual tour and listing video-this one is not to be missed.

  Listing Details

Property Type 
Residential
Listing# 
IR1039841
Source 
REcolorado (Denver)
Last Updated 
09-27-2025 04:05pm
Status 
Active
Off Market Date 
11-30--0001 12:00am

  Property Details

Property Subtype 
Single Family Residence
Sold Price 
$4,000,000
Original Price 
$4,150,000
Location 
Boulder, CO 80304
SqFT 
5381.00
Year Built 
1978
Acres 
0.57
Bedrooms 
5
Bathrooms 
4
Levels 
One

  Map

  Property Level and Sizes

SqFt Lot 
24794.00
Lot Features 
Eat-in Kitchen, Five Piece Bath, Kitchen Island, Open Floorplan, Pantry, Vaulted Ceiling(s), Walk-In Closet(s)
Lot Size 
0.57
Basement 
Full

  Financial Details

Previous Year Tax 
28250.00
Year Tax 
2024
Primary HOA Fees 
0.00

  Interior Details

Interior Features  
Eat-in Kitchen, Five Piece Bath, Kitchen Island, Open Floorplan, Pantry, Vaulted Ceiling(s), Walk-In Closet(s)
Appliances  
Dishwasher, Disposal, Microwave, Oven, Refrigerator
Laundry Features  
In Unit
Electric  
Ceiling Fan(s), Central Air
Flooring  
Tile, Wood
Cooling  
Ceiling Fan(s), Central Air
Heating  
Forced Air
Fireplaces Features  
Gas, Living Room
Utilities  
Electricity Available, Internet Access (Wired), Natural Gas Available

  Exterior Details

Water  
Public
Sewer  
Public Sewer

  Garage & Parking

Parking Features  
Oversized, RV Access/Parking

  Exterior Construction

Roof  
Metal
Construction Materials  
Frame
Window Features  
Double Pane Windows, Window Coverings
Security Features  
Smoke Detector(s)
Builder Source 
Other

  Land Details

PPA 
0.00
Road Frontage Type 
Public
Road Surface Type 
Paved
Sewer Fee 
0.00

  Schools

Elementary School 
Foothill
Middle School 
Centennial
High School 
Boulder

  Walk Score®


 

  Listing Media

Virtual Tour 
  Click here to watch tour


  Contact Agent

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