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$6,750,000 New to Website

  • For Sale
  • Active
  • Single Family
  • 6 Beds
  • 4 Full Baths
  • 3 Partial Baths
  • 6,769 Sq. Ft.
  • 2 Car Garage
  • Updated 13 hours ago

Next open house:

Open House: 1:00 PM - 4:00 PM

Saturday 10/10 1:00 PM - 4:00 PM

517 15th St,Boulder, CO 80302

517 15th StBoulderCO80302

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Join us at 517 15th St on:

  • Open House: 1:00 PM - 4:00 PM

    Sunday 10/11 1:00 PM - 4:00 PM

    517 15th St,Boulder, CO 80302
    517 15th StBoulderCO80302
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AUCTION: Bidder registration deadline: 4 November. Starting bids expected between $3M-$4M. Set just below the iconic Flatirons in the storied Chautauqua neighborhood, this 2008 residence by celebrated Boulder architect Harvey Hine, remodeled throughout in 2023, unites a restored 1914 stone cottage with a striking nautilus-shaped contemporary addition. A soaring 23-foot entry with a dramatic cantilevered staircase introduces an expansive open layout where historic character and modern design converge, finished with the finest custom details throughout. Gently curved walls, vaulted ceilings, and a kitchen that opens to a private deck create seamless indoor-outdoor flow, while a main-level primary suite offers two walk-in closets and a private office. Thoughtful landscaping ensures privacy, yet Chautauqua Park trails are just two blocks away and downtown Boulder dining is only minutes from the door.

Full Property Details for 517 15th St

General

  • Price: $6,750,000
  • Taxes: $27,077 (2025)
  • Status: Active
  • Type: Single Family
  • Source: IRES
  • MLS ID: 1070327
  • Updated: 10/9/2026
  • Added to Site: 1 day(s) ago

Interior

  • Interior Features: Eat-In Kitchen, Separate Dining Room, Cathedral Ceiling(s), Open Floorplan, Pantry, Walk-In Closet(s), Wet Bar, Washer/Dryer Hookup, Kitchen Island, High Ceilings
  • Fireplace: Yes
  • Fireplace(s): Gas
  • Appliances: Electric Range, Dishwasher, Refrigerator, Washer, Dryer, Microwave, Fire Alarm

Rooms

Bathrooms

  • Total Bathrooms: 7
  • Full Bathrooms: 4
  • 3/4 Bathrooms: 2
  • Half Bathrooms: 1
  • Main Floor Baths: 1

Bedrooms

  • Total Bedrooms: 6

Exterior

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

Parking

  • Garage: Yes
  • Garage Spaces: 2
  • Parking Features: Detached
  • Garage Description: Detached

Location

  • Area: Boulder
  • County: Boulder
  • Subdivision: Wellington Heights

School Information

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

Heating & Cooling

  • Cooling Type: Central Air
  • Heating Type: Heat Pump, Radiant

Utilities

  • Gas: Yes
  • Gas: Xcel
  • Sewer: Public Sewer
  • Water: Public
  • Utility Description: Natural Gas Available, Electricity Available, Cable Available, High-Speed Internet Available

Structural Information

  • Architectural Style: Contemporary
  • Construction: Frame, Stone, Stucco
  • Exterior Const.: Frame, Stone, Stucco
  • Basement: Yes
  • Basement Desc.: Full, Partially Finished
  • Roof: Rubber
  • Square Feet: 6,769
  • Sq. Ft. Source: Other
  • Living Area: 6,769 Sq. Ft.
  • Year Built: 2007

Lot Features

  • Property View: Hills
  • Lot Size (Acres): 0.28
  • Lot Size (Sq. Ft.): 12,060
  • Frontage: City Street
  • Street/Road Desc.: Asphalt
  • Lot Features: Evergreen Trees, Deciduous Trees, Level, House Faces South, Paved, Curbs, Gutters, Sidewalks
  • Potential Use: Single-Family
  • Zoning: RES

Green Features

  • Energy Efficient: Southern Exposure, Photovoltaic Owned

Financial Considerations

  • Tax Amount: $27,077
  • Tax Year: 2025
  • Terms: Cash, Conventional

Disclosures and Reports

  • Special Conditions: Private Owner
  • Property ID: R0007035

Listed by RE/MAX Alliance-Boulder (303) 442-3180

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Listing agent

— 517 15th St —

  • RE/MAX Alliance-Boulder

    303-442-3180

3038752241

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 517 15th St

School District:Boulder Valley School District Re-2
NameGradesDistance
Creekside Elementary School At Martin Park
3740 Martin Drive, Boulder, CO 80305
K-51.4 mi
Manhattan Middle School Of The Arts And Academics
290 Manhattan Drive, Boulder, CO 80303
6-82.5 mi
Boulder High School
1604 Arapahoe Avenue, Boulder, CO 80302
9-121.1 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 517 15th St Get Price Alerts and Save Property

Date
Details
Price
Change
Source
10/09/2026
Listed
$6,750,000
78.81%
MLS
10/08/2021
Sold
$3,775,000
—
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 517 15th St

Year
Property Taxes
Change
Tax Assessment
Change
2025
$27,077
—
$304,205
-2%
2025
$27,077
-10%
$308,965
-10%
2024
$30,149
4%
$343,053
1%
2023
$29,107
18%
$340,729
19%
2021
$24,619
-5%
$286,015
3%
2022
$25,818
5%
$278,014
10%
2021
$24,619
20%
$251,945
6%
2018
$20,553
3%
$237,060
—
2017
$19,910
31%
$237,060
35%
2016
$15,206
-30%
$175,661
-30%
2019
$21,595
50%
$251,945
43%
2015
$14,399
-1%
$175,661
4%
2014
$14,569
2%
$169,453
—
2013
$14,248
—
$169,453
—
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.

Estimate the Cost for 517 15th St

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*These costs are estimates, and the interest rates assume exceptional credit standing.

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NMLS#: 1598647

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Listed by RE/MAX Alliance-Boulder (303) 442-3180

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517 15th St, Boulder, CO 80302 (MLS# 1070327) is a Single Family property with 6 bedrooms, 4 full bathrooms and 3 partial bathrooms. 517 15th St is currently listed for $6,750,000 and was received on October 09, 2026. Want to learn more about 517 15th 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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