1. Overview
  2. Location
  3. Interior
  4. Exterior
  5. Property
  6. Schools
  7. Tax
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Status: Active

512 Marine St 
Boulder, CO 80302

$4,750,000

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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.
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Bedrooms
4
Baths
4.5
House Size
4,465 sqft
Year Built
1903
Lot Size
0.23 ac
School District
Boulder Valley RE 2

Location

Market Insights

In the last 30 days, homes for sale in West Boulder, Boulder, CO were on the market for a median of 18 days and 6.25% of homes sold above list price.

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Interior Information

appliances
Bar Fridge
Double Oven
Dryer
Microwave
Oven
Refrigerator
Washer
basement
Full
Sump Pump
cooling
Central Air
features
Eat-in Kitchen
Kitchen Island
Open Floorplan
Pantry
Walk-in Closet(s)
fireplace
Master Bedroom
Family Room
Gas
Living Room
flooring
Tile
Wood
heating
Forced Air
laundry features
In Unit
view
Mountain(s)
window features
Window Coverings

Exterior Information

features
Balcony
Gas Grill
patio and porch
Patio
road surface
Paved
roof
Composition

Property Information

architectural style
Victorian
construction
Brick
Frame
lot
Wooded
Level
Sprinklers In Front
security features
Smoke Detector(s)
sewer
Public Sewer
subdivision name
Highland Lawn
utilities
Cable Available
Electricity Available
Natural Gas Available
water source
Public
  • Listed By Maureen McCarthy
  • (303) 817-1282
  • RE/MAX of Boulder, Inc
  • (303) 449-7000
  • REMAX@boulderco.com
  • MLS IR1044486

Tax History

Date

Property Tax

Land

Additions

Tax Assessment

2024$25,584 (+1.8%)$1,408,000$2,991,900$4,399,900 (0%)
2023$25,140 (+11.4%)$1,408,000$2,991,900$4,399,900 (+25.9%)
2022$22,558 (0%)$1,026,400$2,468,800$3,495,200 (0%)
2021$22,558 (+4.9%)$1,026,400$2,468,800$3,495,200 (+8.1%)
2020$21,511$1,293,000$1,938,900$3,231,900

Tax data provied by Attom


Monthly Payments Calculator

Estimated Monthly Cost

$27,459

30 year fixed·6.9% interest rate
Principal & Interest
$25,027
Property Taxes
$2,132
Home Insurance
$300
HOA Fees
$0
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