512 Marine Street
Boulder, CO 80302
Map
- 4 beds
- 5 baths
- 4,465 sqft
- 9,947 sqft lot
- $1,116 per sqft
- 1903 build
- – on site
Located on one of Boulder's most iconic, tree-lined streets, this architecturally rich residence effortlessly blends timeless charm with elevated modern design. Thoughtfully curated and beautifully finished, the main level features sustainably refinished hardwood floors, soaring ceilings, and a striking gourmet kitchen outfitted with a new Sub-Zero refrigerator, Wolf range, and a marble-topped island ideal for gatherings. Refined living and dining spaces exude warmth and character with custom built-ins, designer lighting, and multiple fireplaces.Upstairs, the vaulted primary suite offers a true retreat, complete with its own fireplace, a private balcony, and sweeping Flatiron views. Two additional bedrooms are filled with light and comfort, each enjoying access to a beautifully appointed bath-one en suite, the other just a few steps away. A whimsical "secret" bonus room adds charm and flexibility for imaginative play or clever storage.The lower level expands the living experience with impressive ceiling height, a bright media room, custom shelving, glass-enclosed home office, and a private guest suite with a spa-like bath.Outdoors, the magic continues. The professionally landscaped backyard is a lush and tranquil sanctuary with a newly paved patio, serene waterfall feature, plumbed-in BBQ, and multiple entertaining spaces-plus a storybook two-story playhouse with sandbox and a full sprinkler system for year-round vibrancy. A detached cottage with vaulted ceilings, a kitchenette, and powder room offers flexible bonus space-perfect for a gym, office, studio, guest quarters or teen hangout-while the detached garage boasts epoxy floors and built-in storage. Just moments from top cafes, award-winning restaurants, boutique shopping, Chautauqua Park, and endless hiking trails, this is quintessential Boulder living at its finest.
Last checked:
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Last updated Jun 24, 2025
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MLS# IR1036876 —
This home is listed in more than one place. See it here.
The Building
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Year Built:1903
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Construction Materials:Brick, Frame
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Building Area Total:4904
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Building Area Source:Other
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Structure Type:House
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Roof:Composition
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Levels:Two
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Basement:true
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Architectural Style:Victorian
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Exterior Features:Balcony, Gas Grill
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Patio And Porch Features:Patio
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Window Features:Window Coverings
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Security Features:Smoke Detector(s)
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Above Grade Finished Area:3238
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Below Grade Finished Area:1227
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Property Attached:false
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Below Grade Unfinished Area:439
Interior
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Interior Features:Eat-in Kitchen, Kitchen Island, Open Floorplan, Pantry, Radon Mitigation System, Walk-In Closet(s)
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Flooring:Tile, Wood
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Fireplace Features:Family Room, Gas, Living Room, Primary Bedroom
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Laundry Features:In Unit
Room Dimensions
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Living Area:4465
Financial & Terms
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Ownership:Individual
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Possession:See Remarks
Location
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Latitude:40.01148
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Longitude:-105.28887
The Property
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Property Type:Residential
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Property Subtype:Single Family Residence
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Parcel Number:R0000453
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Zoning:RES
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Lot Features:Level, Sprinklers In Front
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Lot Size Acres:0.23
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Lot Size SqFt:9,947 Sqft
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View:Mountain(s)
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Vegetation:Wooded
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Road Frontage Type:Public
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Road Surface Type:Paved
Listing Agent
- Contact info:
- Agent phone:
- (303) 817-1282
- Office phone:
- (303) 449-7000
Taxes
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Tax Year:2024
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Tax Annual Amount:$25,584
Beds
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Bedrooms Total:4
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Upper Level Bedrooms:3
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Basement Level Bedrooms:1
Baths
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Total Baths:5
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Full Baths:4
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Half Baths:1
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Main Level Baths:1
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Upper Level Baths:3
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Basement Level Baths:1
The Listing
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Virtual Tour URL Unbranded:https://www.listingsmagic.com/sps/tour-slider/index.php?property_ID=274207
Heating & Cooling
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HVAC Description:Central Air Conditioning
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Heating:Forced Air
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Cooling:Central Air
Utilities
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Utilities:Cable Available, Electricity Available, Natural Gas Available
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Sewer:Public Sewer
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Sewer Tap:No
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Water Source:Public
Appliances
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Appliances:Bar Fridge, Double Oven, Dryer, Microwave, Oven, Refrigerator, Washer
Schools
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Elementary School:Flatirons
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Elementary School District:Boulder Valley RE 2
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Middle Or Junior School:Manhattan
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High School:Boulder
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High School District:Boulder Valley RE 2
The Community
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Subdivision Name:Highland Lawn
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Association:false
Parking
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Parking Total:2
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Garage Spaces:2
Monthly cost estimate
Asking price
$4,985,000
| Expense | Monthly cost |
|---|---|
|
Mortgage
This calculator is intended for planning and education purposes only. It relies on assumptions and information provided by you regarding your goals, expectations and financial situation, and should not be used as your sole source of information. The output of the tool is not a loan offer or solicitation, nor is it financial or legal advice. |
$26,693
|
| Taxes | $2,132 |
| Insurance | $2,326 |
| Utilities | $223 See report |
| Total | $31,374/mo.* |
| *This is an estimate |
Walk Score®
Provided by WalkScore® Inc.
Walk Score is the most well-known measure of walkability for any address. It is based on the distance to a variety of nearby services and pedestrian friendliness. Walk Scores range from 0 (Car-Dependent) to 100 (Walker’s Paradise).
Bike Score®
Provided by WalkScore® Inc.
Bike Score evaluates a location's bikeability. It is calculated by measuring bike infrastructure, hills, destinations and road connectivity, and the number of bike commuters. Bike Scores range from 0 (Somewhat Bikeable) to 100 (Biker’s Paradise).
Transit Score®
Provided by WalkScore® Inc.
Transit Score measures a location's access to public transit. It is based on nearby transit routes frequency, type of route (bus, rail, etc.), and distance to the nearest stop on the route. Transit Scores range from 0 (Minimal Transit) to 100 (Rider’s Paradise).
Soundscore™
Provided by HowLoud
Soundscore is an overall score that accounts for traffic, airport activity, and local sources. A Soundscore rating is a number between 50 (very loud) and 100 (very quiet).
Air Pollution Index
Provided by ClearlyEnergy
The air pollution index is calculated by county or urban area using the past three years data. The index ranks the county or urban area on a scale of 0 (best) - 100 (worst) across the United Sates.
