Residential · Active

512 Marine Street

Boulder, CO 80302

4 Beds · 5 Baths · 4,348 Sq Ft

$4,490,000

Single Family

Property Type

0.23 acres

Lot Size

1903

Year Built

$1,033

Price per Sq Ft

2

Parking Spaces

IR1066712

MLS #

About This Property

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

63 days on market

Listed by Bianca Griffith · RE/MAX of Boulder, Inc · 7209015611

Last updated: 10/6/2026 11:27 AM · Source: REcolorado®, MLS#: IR1066712

Virtual Tour

Property Details

Key Details

Property Type Residential
Sub Type Single Family Residence
Status Active
Price per Sq Ft $1,033
Subdivision Highland Lawn
MLS # IR1066712
Days on Market 63
Bedrooms 4
Full Baths 4
Half Baths 1

More Details

Year Built 1903
Lot Size (Sq Ft) 9,947
Acres 0.23
HOA No
Annual Taxes $27,328
State CO
County Boulder
Zoning RES

Interior

Interior Features Eat-in Kitchen, Kitchen Island, Open Floorplan, Pantry, Walk-In Closet(s), Radon Mitigation System
Heating Forced Air
Cooling Central Air
Flooring Wood
Fireplace Features Family Room, Gas, Living Room, Bedroom
Appliances Bar Fridge, Double Oven, Dryer, Microwave, Oven, Refrigerator, Washer

Exterior & Parking

Exterior Features Balcony, Gas Grill
Garage Yes
Garage Spaces 2
Roof Composition

Building & Lot

Basement Full, Sump Pump
Lot Features Level, Sprinklers In Front
Architectural Style Victorian
Levels Two
Construction Brick, Wood Siding
Sewer Public Sewer
Water Source Public

Location

Price History

DateEventPrice
10/6/2026 Price change
Source: REcolorado® #IR1066712
$4,490,000 -3.4% $1,033/sqft
8/18/2026 Listed for sale
Source: REcolorado® #IR1066712
$4,650,000 $1,069/sqft
11/21/2025 Sold
Source: REcolorado® #8483246
$4,650,000 $1,069/sqft
11/21/2025 Sold
Source: REcolorado® #IR1044486
$4,650,000 -2.1% $1,069/sqft
9/29/2025 Listed for sale
Source: REcolorado® #8483246
$4,750,000 $1,092/sqft
9/24/2025 Listed for sale
Source: REcolorado® #IR1044486
$4,750,000 $1,092/sqft

Based on information submitted to the MLS GRID as of October 20, 2026 at 1:58 PM MDT. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information.

Listing information last updated October 6, 2026 at 11:27 AM.

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