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$3,600,000
505 Marine St, Boulder, CO, 80302
5
Beds
4
Baths
4,045
Square Feet
Beautifully reimagined and renovated, this 1902 Historic Boulder home embraces the past while catering to modern contemporary living. This property boasts an outstanding location on one of Boulder's best blocks, and is just steps from hiking/biking trails, Boulder Creek, and the Pearl Street Mall. Modern living meets timeless design and offers an open floor plan perfect for everyday living and entertaining. This West Marine corner lot extends over 10K SF. This compound consists of the main house and two outbuildings. These outbuildings include a separate carriage house and a renovated garage that is the perfect studio / gym / office. This home has incredible Flatiron views, is filled with character and charm, and features 4 bedrooms on the upper level of the main house. This is Boulder at its best.
Offered By
John Canova, Compass - Boulder
Property Details
Property Type
Residential
Status
Closed
Bedrooms
5
Bathrooms (Full)
2
Property Sub Type
Single Family Residence
Square Feet
4,045
MLS #
967937
Bathrooms (¾)
1
Bathrooms (Half)
1
Flooring
Wood
Appliances
Gas Range, Refrigerator, Washer, Dryer, Microwave
Heating
Forced Air
Utility Features
Natural Gas Available, Electricity Available, Cable Available, Satellite Avail, High Speed Avail
SEWER
Public Sewer
WATER SOURCE
City
Year Built
1902
Basement
Partial, Partially Finished
FINISHED BASEMENT SIZE
635.0
ARCHITECTURAL STYLE
Victorian
Roof
Composition
EXTERIOR FEATURES
Carriage House
Fence
Fenced, Wood
Lot Features
Corner Lot, Wooded, Evergreen Trees, Deciduous Trees, Native Grass, Level, Rolling Lot, Sloping Lot, Steep Lot, Rock Outcropping, Abuts Ditch, Abuts Golf Course, Golf Course Neighborhood, Abuts Pond/Lake, Abuts Stream/Creek/River, Abuts Farm Land, Abuts National Forest, Abuts Park, Abuts Public Open Space, Abuts Private Open Space, Meadow, Orchard(s), Outbuildings, Airpark, Historic District, Paved, Curbs, Gutters, Sidewalks, Alley
Garage spaces
1
CITY
Boulder
SUBDIVISION
Highland Lawn
COUNTY
Boulder
AREA
Boulder
STATE
CO
TAX AMOUNT
15790.0
LATEST UPDATE
2026-01-23T06:08:24.717Z
PRICE CHANGE(S)
$3,950,000 Oct 21, 2025
Property Details
Property Type
Residential
Status
Closed
Bedrooms
5
Bathrooms (Full)
2
Property Sub Type
Single Family Residence
Square Feet
4,045
MLS #
967937
Bathrooms (¾)
1
Bathrooms (Half)
1
New Properties On Market
63
50%
Increase In New Listings
Average Asking Price
$1,902,740
$105,112 Decrease In Avg Asking Price
Average Asking Price / Sq. Ft.
$590
$114 Decrease In List Price/Sq. Ft.
Average Days On Market
12
16 Day
Decrease In Days On Market
Data as of Apr 12, 2026.
Remaining statistics above are calculated on activity within the period from Feb 01, 2026 to Mar 31, 2026.
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HOA Dues
Interest Rate
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