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
For sale
$4,650,000
512 Marine St, Boulder, CO 80302
4beds
5,048sqft
Single Family Residence
Built in 1903
9,947 Square Feet Lot
$-- Zestimate®
$921/sqft
$-- HOA
What's special
- 12 days
- 834
- 63
Zillow last checked:
Listing updated:
Listed by:
Bianca Griffith 720-901-5611,
RE/MAX of Boulder, Inc
Source: IRES as distributed by MLS GRID,MLS#: 1066712
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 4
- Bathrooms: 5
- Full bathrooms: 4
- 1/2 bathrooms: 1
- Main level bathrooms: 1
Primary bedroom
- Description: Hardwood
- Features: Full Primary Bath, Luxury Features Primary Bath
- Level: Upper
- Area: 405 Square Feet
- Dimensions: 27 x 15
Kitchen
- Description: Hardwood
- Level: Main
- Area: 182 Square Feet
- Dimensions: 14 x 13
Heating
- Forced Air
Cooling
- Central Air
Appliances
- Included: Gas Range, Double Oven, Refrigerator, Bar Fridge, Washer, Dryer, Microwave, Gas Bar-B-Q, Water Purifier Owned
- Laundry: Washer/Dryer Hookup
Features
- Eat-in Kitchen, Separate Dining Room, Open Floorplan, Pantry, Walk-In Closet(s), Kitchen Island, High Ceilings
- Flooring: Wood
- Windows: Wood Frames
- Basement: Full,Partially Finished,Built-In Radon,Sump Pump
- Has fireplace: Yes
- Fireplace features: Two or More, Gas, Living Room, Family Room, Bedroom
Interior area
- Total structure area: 3,238
- Total interior livable area: 5,048 sqft
- Finished area above ground: 3,238
Video & virtual tour
Property
Parking
- Total spaces: 2
- Parking features: Attached
- Attached garage spaces: 2
- Details: Attached
Features
- Levels: Two
- Stories: 2
- Patio & porch: Patio
- Exterior features: Sprinkler System, Balcony
- Fencing: Fenced
- Has view: Yes
- View description: Hills
Lot
- Size: 9,947 Square Feet
- Features: Wooded, Deciduous Trees, Level, Paved, Curbs, Gutters, Sidewalks
Details
- Parcel number: R0000453
- Zoning: RES
- Special conditions: Private Owner
Construction
Type & style
- Home type: SingleFamily
- Architectural style: Victorian
- Property subtype: Single Family Residence
Materials
- Frame, Brick
- Roof: Composition
Condition
- New construction: No
- Year built: 1903
Utilities & green energy
- Electric: Xcel
- Sewer: Public Sewer
- Water: City
- Utilities for property: Natural Gas Available, Electricity Available
Community & HOA
Community
- Security: Fire Alarm
- Subdivision: Highland Lawn
HOA
- Has HOA: No
Location
- Region: Boulder
Financial & listing details
- Price per square foot: $921/sqft
- Tax assessed value: $4,585,700
- Annual tax amount: $27,328
- Date on market: 8/18/2026
- Exclusions: Seller property and staging (including window coverings)
- Electric utility on property: Yes
- Road surface type: Asphalt
Estimated market value
Not available
Estimated sales range
Not available
Not available
Price history
Price history is unavailable.
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2025 | $25,584 +1.8% | $286,607 -2.8% |
| 2024 | $25,140 +11.4% | $294,793 -1% |
| 2023 | $22,558 +4.9% | $297,653 +22.5% |
| 2022 | $21,511 +6.9% | $242,917 -2.8% |
| 2021 | $20,115 | $249,907 +8.1% |
| 2020 | $20,115 +15.2% | $231,082 |
| 2019 | $17,459 | $231,082 +14.8% |
| 2018 | $17,459 | $201,369 -9.5% |
| 2017 | $17,459 +9.8% | $222,625 +21.2% |
| 2016 | $15,900 +5.6% | $183,677 +22.7% |
| 2015 | $15,056 +19.6% | $149,679 |
| 2014 | $12,585 +19.1% | $149,679 |
| 2013 | $10,569 +0.9% | $149,679 +18.6% |
| 2012 | $10,476 -12.1% | $126,166 |
| 2011 | $11,913 +7.1% | -- |
| 2010 | $11,124 +185.3% | $147,400 |
| 2009 | $3,899 +3.5% | $147,400 +141.9% |
| 2008 | $3,766 +8.4% | $60,930 |
| 2007 | $3,473 +3.9% | $60,930 +12.1% |
| 2006 | $3,344 +9.8% | $54,350 -7% |
| 2005 | $3,045 +0.7% | $58,420 +17.2% |
| 2004 | $3,023 +4.6% | $49,830 |
| 2003 | $2,891 +10.3% | $49,830 +20.3% |
| 2002 | $2,620 | $41,430 -90.9% |
| 2001 | -- | $452,800 |
Find assessor info on the county website
Monthly payment
Est. payment
Payment breakdown
Explore the cost of this home by adjusting the details. Changes won't be saved.Climate risks
Neighborhood: Flatirons
Nearby schools
Schools provided by the listing agent
- Elementary: Flatirons
- Middle: Manhattan
- High: Boulder
Source: IRES as distributed by MLS GRID. This data may not be complete. We recommend contacting the local school district to confirm school assignments for this home.
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