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For sale
  • $4,985,000

    512 Marine St, Boulder, CO 80302

    4beds
    4,904sqft
    : 
    Residential-Detached, Residential
    Built in 1903
    9,947 Square Feet Lot
    $-- Zestimate®
    $1,017/sqft
    $-- HOA

    What's special

    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.
    58 days
    on Zillow
    |
    940
    |
    49
    |

    Zillow last checked: 7 hours ago

    Listing updated: June 24, 2025 at 03:45pm

    Listed by:

    Maureen McCarthy 303-817-1282,

    RE/MAX of Boulder, Inc

    Source: IRES,MLS#: 1036876MLS Logo
    Travel times

    Tour with a buyer's agent

    We'll find a local expert to take you on a private tour of 512 Marine St.

    Next available tour time:Tomorrow at 11am

    Facts & features

    Interior

    Bedrooms & bathrooms
    • Bedrooms: 4
    • Bathrooms: 5
    • Full bathrooms: 4
    • 1/2 bathrooms: 1
    Primary bedroom
    • Area: 405
    • Dimensions: 15 x 27
    Bedroom 2
    • Area: 156
    • Dimensions: 12 x 13
    Bedroom 3
    • Area: 169
    • Dimensions: 13 x 13
    Bedroom 4
    • Area: 240
    • Dimensions: 16 x 15
    Dining room
    • Area: 182
    • Dimensions: 13 x 14
    Family room
    • Area: 350
    • Dimensions: 14 x 25
    Kitchen
    • Area: 250
    • Dimensions: 10 x 25
    Living room
    • Area: 253
    • Dimensions: 23 x 11
    Heating
    • Forced Air
    Cooling
    • Has cooling: Yes
    Appliances
    • Included: Gas Range/Oven, Double Oven, Refrigerator, Bar Fridge, Washer, Dryer, Microwave, Water Purifier Owned
    • Laundry: Washer/Dryer Hookups, Upper Level
    Features
    • Study Area, Eat-in Kitchen, Separate Dining Room, Open Floorplan, Pantry, Walk-In Closet(s), Kitchen Island, High Ceilings, Open Floor Plan, Walk-in Closet, 9ft+ Ceilings
    • Flooring: Wood, Wood Floors, Tile
    • Windows: Window Coverings, Wood Frames, Wood Windows
    • Basement: Full,Partially Finished,Built-In Radon,Sump Pump
    • Has fireplace: Yes
    • Fireplace features: 2+ Fireplaces, Gas, Living Room, Family/Recreation Room Fireplace, Master Bedroom
    Interior area
    • Total structure area: 4,650
    • Total interior livable area: 4,904 sqft
    • Finished area above ground: 3,238
    • Finished area below ground: 1,412

    Property

    Parking
    • Total spaces: 2
    • Parking features: Garage
    • Garage spaces: 2
    • Details: Garage Type: Detached
    Features
    • Levels: Two
    • Stories: 2
    • Patio & porch: Patio
    • Exterior features: Gas Grill, Balcony
    • Fencing: Fenced
    • Has view: Yes
    • View description: Hills
    Lot
    • Size: 9,947 Square Feet
    • Features: Curbs, Gutters, Sidewalks, Lawn Sprinkler System, Wooded, Level
    Details
    • Parcel number: R0000453
    • Zoning: RES
    • Special conditions: Private Owner

    Construction

    Type & style
    • Home type: SingleFamily
    • Architectural style: Victorian
    • Property subtype: Residential-Detached, Residential
    Materials
    • Wood/Frame, Brick
    • Roof: Composition
    Condition
    • Not New, Previously Owned
    • New construction: No
    • Year built: 1903

    Utilities & green energy

    • Electric: Electric, Xcel Energy
    • Gas: Natural Gas, Xcel Energy
    • Sewer: City Sewer
    • Water: City Water, City of Boulder
    • Utilities for property: Natural Gas Available, Electricity Available, Cable Available

    Community & HOA

    Community
    • Subdivision: Highland Lawn
    HOA
    • Has HOA: No
    Location
    • Region: Boulder

    Financial & listing details

    • Price per square foot: $1,017/sqft
    • Tax assessed value: $4,399,900
    • Annual tax amount: $25,584
    • Date on market: 6/14/2025
    • Listing terms: Cash,Conventional
    • Electric utility on property: Yes
    • Road surface type: Paved, Asphalt
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