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$5,800,000

For Sale - Active
643 Mapleton Ave, Boulder, CO 80304
4 Beds
3 Baths
3,926 Square Feet
0.15 Acres Lot
Built in 1895
For Sale - Active
Units n/a
Checked: 4 hours ago
Updated: May 27, 2025 at 05:55PM

Investment Summary


Monthly Cash Flow
-$22,875
Cap Rate
0.9%
Cash-on-Cash Return
-20.6%
Debt Coverage Ratio
0.17
Internal Rate of Return (5 years)
-15.9%

Property Description


0.15 Acres Lot
Built in 1895
For Sale - Active
Units n/a

Seller Financing Available. The beautifully preserved past meets the exciting present in this carefully updated and diligently maintained historic Mapleton Hill home. This fine Boulder 4BD/3BA landmark awaits its next generation of lucky residents with an expansive modernized layout, a wealth of original and period-appropriate architectural details, and phenomenal poolside outdoor space. Built in 1895, The Law House is a Gothic Revival masterpiece built from stone quarried from Mt. Sanitas. Inside, you'll find tall tin ceilings, original fir floors, stained glass windows and exceptional millwork paired with thoughtfully selected lighting, windows and doors, Cleveland Art and Antiques handblown light fixtures and Sonos speakers. A charming covered porch and gracious foyer open to a sun-kissed layout perfect for peaceful relaxation and lavish entertaining, including a fireplace living room, elegant formal dining room and a stately library with breathtaking woodwork, a Murphy bed and a hidden passageway to both the lower and upper levels. The open gourmet kitchen boasts a skylight, custom cabinetry, honed raw-edge Australian granite and upscale appliances, while an adjacent guest bath and laundry room add convenience. Grill masters will love the large deck's Lynx summer kitchen. Below, the newer saltwater jetted pool spa is surrounded by manicured gardens and tall trees for optimal privacy. A handsome fir staircase leads to the upper-level private quarters, including a luxurious owner's suite with a spa bath and walk-in closet. Two secondary bedrooms & a full bath complete the top floor, while the walkout basement provides a vast footprint for media room, home gym & game room use. Completely remodeled in 2006, the home includes upper-level HVAC and mini-split/radiant heat on the main and lower levels. Plans are available for a primary bathroom and closet remodel and a basement expansion with a depth increase. Coveted Mapleton Hill Historic District close to EVERYTHING.

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Location


Property Details


Parking

  • Description: Attached Garage
  • Details: Attached
  • Garage Spaces: 2
  • Spaces Total: 2

Bedroom Information

  • # of Bedrooms: 4

Bathroom Information

  • # of Baths (Full): 2
  • # of Baths (Partial): 1
  • # of Baths (Total): 3.0

Interior Features

  • # of Rooms: 13
  • # of Stories: 2
  • Basement: Yes
  • Basement Description: Walk-Out Access

Exterior Features

  • Exterior Walls Materials: Brick
  • Roof Material: Composition
  • Pool: Yes

Land Information

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

Lot Information

  • Parcel ID: 146125404002
  • Lot Size: 6332 sqft

Property Information

  • Property Type: Single Family Residence
  • Style: Victorian
  • Year Built: 1895

Tax Information

  • Annual Tax: $18,826

Utilities

  • Water & Sewer: Public
  • Heating: Forced Air, Hot Water, Radiant, Wood Stove
  • Cooling: Central Air

Location

  • County: Boulder

Listing Details


Listed by:
Patrick Brown
Compass - Boulder
(303) 242-6012

Source:
REColorado
MLS#: IR1026643
REColorado

Investment Summary


Monthly Cash Flow
-$22,875
Cap Rate
0.9%
Cash-on-Cash Return
-20.6%
Debt Coverage Ratio
0.17
Internal Rate of Return (5 years)
-15.9%

Purchase Details

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Purchase price:
$5,800,000
Amount financed:
-$4,640,000
Down payment:
$1,160,000
Closing costs:
$174,000
Rehab costs:
$0
Initial cash invested:
$1,334,000
Square feet:
3,926
Cost per square foot:
$1,477
Monthly rent per square foot:
$2.27

Financing Details

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Loan amount:
$4,640,000
Loan to value ratio:
80.0%
Loan type:
Amortizing
Term:
30 years
Interest rate:
5.875%
Principal & interest:
$27,447
Property tax:
$1,569
Insurance:
$623
Private mortgage insurance (PMI):
$0
Monthly payment:
$29,639

Operating Income

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% Rent Monthly Yearly
Gross rent:
$8,900 $106,800
Vacancy loss: (6%)
6% -$534 -$6,408
Operating income:
$8,366 $100,392

Operating Expenses


% Rent Monthly Yearly
Property taxes: (18%)
18%-$1,569-$18,826
Insurance: (7%)
7%-$623-$7,476
Property management: (8%)
8%-$712-$8,544
Repairs & maintenance: (5%)
5%-$445-$5,340
Capital expenditures: (5%)
5%-$445-$5,340
HOA fees: (n/a)
n/an/an/a
Total operating expenses: (43%)
43%-$3,794-$45,526

Cash Flow


Monthly Yearly
Net operating income:
$4,572 $54,864
Mortgage payments:
-$27,447 -$329,364
Cash flow:
$22,875 $274,500