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503 Kalmia AvenueBoulder, CO 80304

For Sale

$4,000,000

Smart Buyer Rebate $40,000

Open House on Sunday (9/7) 1-2PM! 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.

Listed by Sara Groem

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License #IRP31525

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Open Real Estate

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303-522-4184

Last updated September 04, 2025

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Source: REcolorado #IR1039841

Listing Facts

  • TypeSingle-family
  • NeighborhoodJuniper - Kalmia
  • Bedrooms5
  • Bathrooms4
  • Days on Prevu45
  • Taxes$28,250/year
  • Size5,113 sqft
  • Price per sqft$782

Amenities

  • Dishwasher
  • Private Outdoor Space
  • Air Conditioning
  • Parking

Location

Mortgage Calculator

Listing History

08/12/2025
Price Decreased
$4,000,000
07/23/2025
Listed by Open Real Estate
$4,150,000

Property Details for 503 Kalmia Avenue

Exterior

Construction

  • Roof: Metal
  • Structure Type: House
  • Window Features: Double Pane Windows, Window Coverings
  • Year Built: 1978
  • Architectural Style: Contemporary
  • Construction Materials: Frame

Features

  • Patio And Porch Features: Deck, Patio
  • Road Frontage Type: Public

Measurements

  • Building Area Total: 5,381
  • Lot Features: Ditch, Flood Zone, Level, Sprinklers In Front
  • Lot Size Acres: 0.57
  • Lot Size Square Feet: 24,794

Financial

Taxes

  • Parcel Number: R0077871
  • Tax Annual Amount: $28,250.00
  • Tax Year: 2024

Interior

Features

  • Appliances: Dishwasher, Disposal, Microwave, Oven, Refrigerator
  • Fireplace Features: Gas, Living Room
  • Flooring: Tile, Wood
  • Interior Features: Eat-in Kitchen, Five Piece Bath, Kitchen Island, Open Floorplan, Pantry, Vaulted Ceiling(s), Walk-In Closet(s)

Measurements

  • Living Area: 5,113

Rooms

  • Basement: Full
  • Has Basement: Yes
  • Bathrooms Full: 3
  • Bathrooms Half: 1
  • Bathrooms Total Integer: 4
  • Bedrooms Total: 5
  • Main Level Bathrooms: 3
  • Main Level Bedrooms: 4

Other

General

  • Exclusions: Staging furnishings and personal items

Location

  • Subdivision Name: Foothills

Parking

Parking

  • Attached Garage: Yes
  • Garage Spaces: 2
  • Parking Features: Oversized, RV Access/Parking
  • Parking Total: 2

Schools

Elementary School

  • Elementary School: Foothill
  • Elementary School District: Boulder Valley RE 2

High School

  • High School: Boulder
  • High School District: Boulder Valley RE 2

Middle or Junior School

  • Middle Or Junior School: Centennial

Utilities

Equipment

  • Cooling: Ceiling Fan(s), Central Air
  • Heating: Forced Air
  • Laundry Features: In Unit
  • Sewer: Public Sewer
  • Utilities: Electricity Available, Internet Access (Wired), Natural Gas Available
  • Water Source: Public

The content relating to real estate for sale in this Web site comes in part from the Internet Data eXchange ("IDX") program of METROLIST, INC., DBA RECOLORADO® Real estate listings held by brokers other than Prevu are marked with the IDX Logo. This information is being provided for the consumers' personal, non-commercial use and may not be used for any other purpose. All information subject to change and should be independently verified.

Full MLS Disclaimers

Rebate estimate is indicative only and based on listing price and estimated buyer's agent commission paid by owner, if applicable. Final rebates are subject to Terms of Use and may vary due to final negotiated transaction terms.