512 Marine Street, Boulder, CO 80302 (MLS # 8483246)

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PRICE $4,750,000 dsIDX morgage calculator
BEDS 4
BATHS 5
HOME SIZE 4,465 sqft
LOT SIZE 10,019 sqft

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.

DAYS ON MARKET 11 LAST UPDATED 9/30/2025
TRACT Highland Lawn YEAR BUILT 1903
GARAGE SPACES 2.0 COUNTY Boulder
STATUS Active PROPERTY TYPE(S) Single Family

SCHOOLS
Elementary School Flatirons
Jr. High School Manhattan
High School Boulder


ADDITIONAL DETAILS
AIR Central Air
AIR CONDITIONING Yes
APPLIANCES Bar Fridge, Double Oven, Dryer, Microwave, Oven, Refrigerator, Washer
BASEMENT Finished, Sump Pump, Yes
CONSTRUCTION Brick, Frame
EXTERIOR Balcony, Gas Grill
FIREPLACE Yes
GARAGE Yes
HEAT Forced Air
INTERIOR Eat-in Kitchen, Kitchen Island, Open Floorplan, Pantry, Walk-In Closet(s)
LOT 10019 sq ft
LOT DESCRIPTION Level, Sprinklers In Front, Wooded
SEWER Public Sewer
STORIES 2
STYLE Victorian
SUBDIVISION Highland Lawn
TAXES 25584
UTILITIES Natural Gas Available, Cable Available, Electricity Connected, Natural Gas Connected
VIEW Yes
VIEW DESCRIPTION Mountain(s)
WATER Public
MORTGAGE CALCULATOR
   

TOTAL MONTHLY PAYMENT

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Listing provided by Maureen McCarthy, RE/MAX of Boulder
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