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#IR1027880, John McElveen, Listing office: milehimodern - Boulder
#IR1036876·
Listing office: RE/MAX of Boulder, Inc·
Listing agent: Maureen McCarthy·
Listing office phone: 3034497000
$4,985,000 List price
512 Marine St Boulder, CO 80302
4 beds
4 full, 1 partial
4,465 sqft
0.2 acres
$1,116 / sqft
House
Property details
About 512 Marine St
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.
Highlights
Home typeSingle Family Residence
HeatingForced Air
StatusActive
CoolingCentral Air
Size4,465 sqft
BasementYes
Lot size0.23 Acres
Year built1903
MLS #IR1036876
Garage2 spaces
FireplaceFamily Room, Gas, Living Room, Primary Bedroom
ViewMountain(s)
Summary
- Partial Bathrooms: 1
- Full Bathrooms: 4
- Appliances: Bar Fridge, Double Oven, Dryer, Microwave, Oven, Refrigerator, Washer
- Basement: Yes
- Flooring Type: Tile, Wood
- Interior: Eat-in Kitchen, Kitchen Island, Open Floorplan, Pantry, Radon Mitigation System, Walk-In Closet(s)
- Fireplace: Family Room, Gas, Living Room, Primary Bedroom
- Total Bedroom Count: 4
- Garage Space: 2 spaces
- View: Mountain(s)
- Exterior: Balcony, Gas Grill
- Architectural Style: Victorian
- Heating: Forced Air
- Cooling: Central Air
- List Price: $4,985,000
- Price/SqFt: $1,116
- Annual Tax Amount: $25,139
- Tax Year: 2023
- Lot: Level, Sprinklers In Front
- Year Built: 1903
- Living Area: 4,465 SqFt
- Lot Size: 0.23 Acres
- MLS Number: IR1036876
- MLS Name: RECOLORADO
- Office Name: RE/MAX of Boulder, Inc
- Office Phone: (303) 449-7000
- Listing Agent: Maureen McCarthy
Listings courtesy of REColorado as distributed by MLS GRID.
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The information contained in this publication is subject to change without notice. METROLIST, INC., DBA RECOLORADO MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. METROLIST, INC., DBA RECOLORADO SHALL NOT BE LIABLE FOR ERRORS CONTAINED HEREIN OR FOR ANY DAMAGES IN CONNECTION WITH THE FURNISHING, PERFORMANCE, OR USE OF THIS MATERIAL.
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6455 S. Yosemite St., Suite 300
Greenwood Village, CO 80111 USA
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Last updated on: 7/13/2025, 1:57:26 AM Eastern. If you have any questions regarding the accuracy of this data, please contact us at help@rockethomes.com.
Price information
Property sales
| Date | Event | Price |
|---|---|---|
| Jun 19, 2019 | Home Sold | $3,480,000 |
| Oct 30, 2012 | Home Sold | $2,250,000 |
| May 27, 2008 | Home Sold | $2,050,000 |
| Jan 22, 2007 | Home Sold | $700,000 |
Tax history
| Year | Assessment | Property Tax |
|---|---|---|
| 2023 | $294,793 | $25,139 |
| 2022 | $242,917 | $22,558 |
| 2021 | $249,907 | $21,510 |
| 2020 | $231,082 | $20,114 |
| 2019 | $232,697 | $17,458 |
| 2018 | $201,369 | $16,912 |
| 2017 | $201,369 | $15,900 |
History based on county public records data.
Nearby schools
7
Flatirons Elementary School
Public District KG-5
0.3 mi
•1150 7th St
5
University Hill Elementary School
Public District PK-5
1.0 mi
•956 16th St
5
Whittier International Elementary School
Public District KG-5
1.2 mi
•2008 Pine St
School ratings are a score out of 10, where 10 is the highest and 1 is the lowest.
Neighborhood
The neighbors living near this home have an average income of $46,250. The majority of Boulder, CO residents have income less than $<35k annually. The most common type of family is single, no kids. Typical level of education for residents in this area is post secondary degree.
How much money do the neighbors make?
39%
<35k
29%
35k-100k
21%
100k-200k
11%
200k+
What level of education do the neighbors have?
High School Diploma
Post Secondary Degree
Masters Degree
Doctorate
What types of families live nearby?
77%
Single, No Kids
4%
Single, with Kids
11%
Married, No Kids
8%
Married, with Kids
Are the neighbors home owners or renters?
Home Owners
Renters
How old are people in this area?
6%
<11 yrs old
4%
12-17 yrs old
57%
18-34 yrs old
27%
35-64 yrs old
6%
65+ yrs old
What do the neighbors do for fun?
NBA/WNBA
Yoga/pilates
Major League Soccer (MLS)
Where do the neighbors shop?
Express/Express For Men
H&M
Banana Republic
Where do the neighbors go to eat?
Starbucks
Dominos Pizza
Sonic
What do the neighbors drive?
Pontiac
Audi
Infiniti
What do the neighbors listen to?
Urban Contemporary
Alternative
News
All data provided by Home Junction and Claritas
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Frequently asked questions
About 512 Marine St
The listing price of 512 Marine St property is $4,985,000.
The property 512 Marine St is a house located in Boulder, Colorado, 80302.
Active Listing: 512 Marine St is For Sale (Active/New) which means the seller is accepting offers.
The nearby schools for 512 Marine St are: Flatirons Elementary School (GreatSchools Rating 7/10), University Hill Elementary School (GreatSchools Rating 5/10), Whittier International Elementary School (GreatSchools Rating 5/10), Casey Middle School (GreatSchools Rating 3/10), Centennial Middle School (GreatSchools Rating 5/10), Horizons K-8 School (GreatSchools Rating 8/10), Boulder High School (GreatSchools Rating 8/10), New Vista High School (GreatSchools Rating 7/10), Fairview High School (GreatSchools Rating 9/10).
According to the records, the last property tax for 2023 is $25,139 (source: MLS/based on county public records data).
The last sale was on June 19, 2019 for $3,480,000 (source: MLS/tax record).
The property at 512 Marine St has 4 bedrooms and 4 full and 1 half bathrooms.
The property 512 Marine St is 4,465 SqFt (source: MLS/tax record).
The year of construction for 512 Marine St is 1903.
This home is located at 512 Marine St in Boulder, CO and zip code 80309 in the West Boulder neighborhood. This 4,465 square foot home, which was built in 1903, sits on a 0.23 acre lot. Features: 4 bedrooms, 5 bathrooms. It has been listed on Rocket Homes since June 14, 2025 and is currently priced at $4,985,000.
Over 14 listings were sold over their listed price in June 2025 in Boulder, CO. In the same period over 114 listings were sold below the listed price and 34 listings were sold for the listed price. The number of homes for sale in Boulder, CO increased by 8.5% between May and June 2025. Listings spent 39 days on the market in June 2025, and had a median list price of $965,000 during the same period.
From Rocket Homes Real Estate and based on county public records data.