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$4,250,000

For Sale - Active
503 Kalmia Ave, Boulder, CO 80304
5 Beds
4 Baths
5,113 Square Feet
0.57 Acres Lot
Built in 1978
For Sale - Active
Units n/a
Checked: 21 hours ago
Updated: Jun 22, 2025 at 03:16AM

Investment Summary


Monthly Cash Flow
-$18,400
Cap Rate
1.1%
Cash-on-Cash Return
-22.6%
Debt Coverage Ratio
0.17
Internal Rate of Return (5 years)
-17.8%

Property Description


0.57 Acres Lot
Built in 1978
For Sale - Active
Units n/a

Open House on Saturday (6/21) from 10:30-11:30 AM. Tucked behind a private, gated entrance on a lush 0.57-acre lot, this home, remodeled by renowned architect Harvey Hine, offers the pinnacle of luxury and modern design. Step through the oversized wood pivot door that leads to an open-concept great room with soaring vaulted ceilings, a dramatic fireplace, and warm maple hardwood floors. Expansive windows fill the space with natural light and offer seamless access to the rear deck, perfect for entertaining. The chef's kitchen features custom cabinetry, stone countertops, tile backsplashes, a Wolf range, and a Subzero refrigerator. A spacious walk-in pantry and waterfall island enhance functionality and elegance. A cozy library lounge area leads to a home office or fifth bedroom with direct front patio access. The main level primary suite is a serene retreat with a spacious bedroom, walk-in closet, and a spa-like en suite bathroom. A fully finished lower level with media room, fitness area, and guest suite provides ample space for family or visitors. The striking wood exterior, metal roof, and grand slate patio set the tone for a residence that exudes sophistication and tranquility. The expansive grounds offer tranquility with a water feature, several seating areas, stone patios, a deck, 40-50' evergreens surrounding the property, natural boulders, lush landscaping, and abuts a seasonal ditch. Don't miss the bonus heated studio, which is ideal for a gym, art studio, or office. Additional amenities include an attached two-car garage, a dramatic illuminated gated driveway, and ample extra parking. Located in Newlands, with easy access to North Boulder, downtown, hiking trails, open space, and top-rated schools, this home offers the perfect blend of luxury, privacy, and convenience. Don't miss the virtual tour and listing video.

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Location


Property Details


Parking

  • Description: Garage Door Opener
  • Details: Oversized, RV Access/Parking, Attached
  • Garage Spaces: 2
  • Spaces Total: 2

Bedroom Information

  • # of Bedrooms: 5

Bathroom Information

  • # of Baths (Full): 3
  • # of Baths (Partial): 1
  • # of Baths (Total): 4.0

Interior Features

  • # of Rooms: 13
  • # of Stories: 1
  • Basement: Yes

Exterior Features

  • Exterior Walls Materials: Rock, Stone
  • Roof Material: Metal

Land Information

  • Land Use: Residential
  • Land Use Subtype: Single Family Residential

Lot Information

  • Parcel ID: 146124100039
  • Lot Size: 24794 sqft

Property Information

  • Property Type: Single Family Residence
  • Style: Contemporary
  • Year Built: 1978

Tax Information

  • Annual Tax: $28,250

Utilities

  • Water & Sewer: Public
  • Heating: Forced Air
  • Cooling: Ceiling Fan(s), Central Air

Location

  • County: Boulder

Listing Details


Listed by:
Sara Groem
Open Real Estate
(303) 522-4184

Source:
REColorado
MLS#: IR1027404
REColorado

Investment Summary


Monthly Cash Flow
-$18,400
Cap Rate
1.1%
Cash-on-Cash Return
-22.6%
Debt Coverage Ratio
0.17
Internal Rate of Return (5 years)
-17.8%

Purchase Details

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Purchase price:
$4,250,000
Amount financed:
-$3,400,000
Down payment:
$850,000
Closing costs:
$127,500
Rehab costs:
$0
Initial cash invested:
$977,500
Square feet:
5,113
Cost per square foot:
$831
Monthly rent per square foot:
$1.76

Financing Details

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Loan amount:
$3,400,000
Loan to value ratio:
80.0%
Loan type:
Amortizing
Term:
30 years
Interest rate:
6.840%
Principal & interest:
$22,256
Property tax:
$2,354
Insurance:
$630
Private mortgage insurance (PMI):
$0
Monthly payment:
$25,240

Operating Income

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% Rent Monthly Yearly
Gross rent:
$9,000 $108,000
Vacancy loss: (6%)
6% -$540 -$6,480
Operating income:
$8,460 $101,520

Operating Expenses


% Rent Monthly Yearly
Property taxes: (26%)
26%-$2,354-$28,250
Insurance: (7%)
7%-$630-$7,560
Property management: (8%)
8%-$720-$8,640
Repairs & maintenance: (5%)
5%-$450-$5,400
Capital expenditures: (5%)
5%-$450-$5,400
HOA fees: (n/a)
n/an/an/a
Total operating expenses: (51%)
51%-$4,604-$55,250

Cash Flow


Monthly Yearly
Net operating income:
$3,856 $46,272
Mortgage payments:
-$22,256 -$267,072
Cash flow:
$18,400 $220,800