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$4,650,000 New to Website

  • For Sale
  • Active
  • Single Family
  • 4 Beds
  • 4 Full Baths
  • 1 Partial Bath
  • 5,048 Sq. Ft.
  • 2 Car Garage
  • Updated 3 days ago
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Perfectly located on one of Boulder's most idyllic streets, this exceptional home blends Victorian charm with luxurious modern amenities. The homes' traditional exterior gives way to a welcoming main level that features light-filled spaces, soaring ceilings, a formal dining room perfected for entertaining, and an array of spaces that welcome the outdoors in. The chef's kitchen features a new Sub-Zero fridge, Wolf range, granite topped island, and a walk-in pantry that makes organization easy. Don't miss the cleverly-designed under stair office with secret bookshelf, one of the many special touches that make this home so unique.Upstairs the primary suite features two fireplaces, a generous soaking tub and steam shower in the spa-like bath, soaring ceilings and mountain views. Two more light-filled bedrooms, two full baths and a dedicated laundry room complete the second floor. The lower level includes the large fourth bedroom with an en-suite bath, impressive ceiling height, an office, third living room, and an abundance of useful built-in storage. Step outside to a peaceful retreat of a backyard that includes a waterfall feature, plumbed-in BBQ, multiple outdoor patios, a two story playhouse, and an array of flowers and fruit trees. The separate backyard cottage with vaulted ceilings, a kitchenette, and powder bath creates the ultimate flexibility for a gym, home office, or guest house. The two car garage with epoxy floors and additional storage adds to the comfort and convenience of the home.Walk to trails, downtown restaurants, and all the best that Boulder has to offer. This is Boulder living at its best

Full Property Details for 512 Marine St

General

  • Price: $4,650,000
  • Taxes: $27,328 (2025)
  • Status: Active
  • Type: Single Family
  • Source: IRES
  • MLS ID: 1066712
  • Updated: 8/19/2026
  • Added to Site: 3 day(s) ago

Interior

  • Interior Features: Eat-In Kitchen, Separate Dining Room, Open Floorplan, Pantry, Wood Windows, Walk-In Closet(s), Washer/Dryer Hookup, Kitchen Island, High Ceilings
  • Fireplace: Yes
  • Fireplace(s): Two or More, Gas, Living Room, Family Room, Bedroom
  • Appliances: Gas Range, Double Oven, Refrigerator, Bar Fridge, Washer, Dryer, Microwave, Gas Bar-B-Q, Water Purifier Owned, Fire Alarm
  • Flooring: Wood

Rooms

Bathrooms

  • Total Bathrooms: 5
  • Full Bathrooms: 4
  • Half Bathrooms: 1
  • Basement Baths: 1

Bedrooms

  • Total Bedrooms: 4

Exterior

  • Exterior Features: Sprinkler System, Balcony
  • Porch/Patio/Deck: Patio

Parking

  • Garage: Yes
  • Attached garage: Yes
  • Garage Spaces: 2
  • Parking Features: Attached
  • Garage Description: Attached

Location

  • Area: Boulder
  • County: Boulder
  • Subdivision: Highland Lawn

School Information

  • School District: Boulder Valley Dist RE2
  • Elementary School: Flatirons
  • Middle School: Manhattan
  • High School: Boulder

Heating & Cooling

  • Cooling Type: Central Air
  • Heating Type: Forced Air

Utilities

  • Gas: Yes
  • Sewer: Public Sewer
  • Water: City
  • Utility Description: Natural Gas Available, Electricity Available

Structural Information

  • Architectural Style: Victorian
  • Construction: Frame, Brick
  • Exterior Const.: Frame, Brick
  • Basement: Yes
  • Basement Desc.: Full, Partially Finished, Built-In Radon, Sump Pump
  • Roof: Composition
  • Square Feet: 5,048
  • Sq. Ft. Source: Assessor
  • Living Area: 4,348 Sq. Ft.
  • Year Built: 1903

Lot Features

  • Property View: Hills
  • Lot Size (Acres): 0.23
  • Lot Size (Sq. Ft.): 9,947
  • Frontage: City Street
  • Street/Road Desc.: Asphalt
  • Fence: Yes
  • Lot Features: Wooded, Deciduous Trees, Level, Paved, Curbs, Gutters, Sidewalks
  • Potential Use: Single-Family
  • Zoning: RES
  • Fencing (Description): Fenced

Financial Considerations

  • Tax Amount: $27,328
  • Tax Year: 2025

Disclosures and Reports

  • Special Conditions: Private Owner
  • Exclusions: Seller property and staging (including window coverings)
  • Property ID: R0000453

Listed by RE/MAX of Boulder, Inc (303) 449-7000

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Listing agent

— 512 Marine St —

  • RE/MAX of Boulder, Inc

    303-449-7000

7209015611

Get Pre-Approved Today

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Schools serving 512 Marine St

School District:Boulder Valley School District Re-2
NameGradesDistance
Flatirons Elementary School
1150 7th Street, Boulder, CO 80302
K-50.3 mi
Manhattan Middle School Of The Arts And Academics
290 Manhattan Drive, Boulder, CO 80303
6-83.4 mi
Boulder High School
1604 Arapahoe Avenue, Boulder, CO 80302
9-120.9 mi
Disclaimer: School attendance boundaries provided by ATTOM Data Solutions and are for reference only. Contact the school directly to verify enrollment eligibility.

Price & Sales History for 512 Marine St Get Price Alerts and Save Property

Date
Details
Price
Change
Source
8/19/2026
Listed
$4,650,000
—
MLS
11/14/2025
Sold
$4,650,000
—
Public Record
Get Price Alerts and Save Property
Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

Tax History for 512 Marine St

Year
Property Taxes
Change
Tax Assessment
Change
2025
$27,328
7%
$311,827
7%
2024
$25,584
2%
$291,108
-1%
2023
$25,140
17%
$294,793
18%
2021
$21,511
-5%
$249,907
3%
2022
$22,558
5%
$242,917
5%
2021
$21,511
9%
$231,082
—
2019
$19,807
13%
$231,082
15%
2018
$17,459
3%
$201,369
—
2017
$16,912
6%
$201,369
10%
2016
$15,900
6%
$183,677
—
2015
$15,056
17%
$183,677
23%
2014
$12,869
2%
$149,679
—
2013
$12,585
—
$149,679
—
View All
Disclaimer: Historical tax information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

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NMLS#: 1598647

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Listed by RE/MAX of Boulder, Inc (303) 449-7000

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512 Marine St, Boulder, CO 80302 (MLS# 1066712) is a Single Family property with 4 bedrooms, 4 full bathrooms and 1 partial bathroom. 512 Marine St is currently listed for $4,650,000 and was received on August 19, 2026. Want to learn more about 512 Marine St? Do you have questions about finding other Single Family real estate for sale in Boulder? You can browse all Boulder real estate or contact a Coldwell Banker agent to request more information.

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