503 Kalmia Avenue, Boulder, CO

$3,900,000

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5

Beds

4

Baths

5,113

Square feet

0.57

Acres

About 503 Kalmia Avenue

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.

Features of 503 Kalmia Avenue

MLS® # IR1039841
Price $3,900,000
Bedrooms 5
Bathrooms 4.00
Full Baths 3
Half Baths 1
Square Footage 5,113
Acres 0.57
Year Built 1978
Type Residential
Sub-Type Single Family Residence
Style Contemporary
Status Active

Community Information

Address 503 Kalmia Avenue
Subdivision Foothills
City Boulder
County Boulder
State CO
Zip Code 80304

Amenities

Utilities Electricity Available, Internet Access (Wired), Natural Gas Available
Parking Spaces 2
Parking Oversized, RV Access/Parking
# of Garages 2
Is Waterfront No
Has Pool No

Interior

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
Heating Forced Air
Cooling Ceiling Fan(s), Central Air
Fireplace Yes
Fireplaces Gas, Living Room
Stories One

Exterior

Lot Description Ditch, Flood Zone, Level, Sprinklers In Front
Windows Double Pane Windows, Window Coverings
Roof Metal

School Information

District Boulder Valley RE 2
Elementary Foothill
Middle Centennial
High Boulder

Additional Information

Date Listed July 23rd, 2025
Zoning SFR
Foreclosure No
Short Sale No
RE / Bank Owned No

Listing Details

OfficeOpen Real Estate

Listing Map

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