Recently Viewed Properties
See This Home
Save This Listing
Close

View All Photos

$5,095,000 New to Website

  • For Sale
  • Active
  • Single Family
  • 5 Beds
  • 3 Full Baths
  • 2 Partial Baths
  • 7,177 Sq. Ft.
  • 2 Car Garage
  • Updated 1 day ago

Next open house:

Open House: 1:00 PM - 3:00 PM

Saturday 3/7 1:00 PM - 3:00 PM

521 Hawthorn Ave,Boulder, CO 80304

521 Hawthorn AveBoulderCO80304

Get directions
See This Home
Save This Home
See This Home
Save This Home
521 Hawthorn Ave, Boulder, COVideo Tour of 521 Hawthorn Ave, Boulder, CO.
Situated on a rare 10,724 sq ft lot in Newlands, one of Boulder's most cherished neighborhoods, 521 Hawthorn Avenue offers a quiet, walkable setting tucked between North Boulder and downtown, steps from Ideal Market, Pearl Street, North Boulder Park, and the Goat Trail. Freshly refinished ebony-stained floors span the main level, grounded by radiant heat and framed by oversized windows, with crown molding and millwork executed consistently throughout. Dual-zone air conditioning, built-in humidification, and high-efficiency mechanical systems round out an elevated set of home systems. The front living room centers on a gas fireplace flanked by shuttered windows, while the adjacent dining room flows naturally toward the back of the home where a family room, oversized island kitchen, and sunny breakfast nook create the hub of daily life. A dedicated mid-flight home office, mudroom with heated garage access, and an intuitive main-level layout complete the picture. Upstairs, the primary suite occupies its own corner with a curved bay of windows, freestanding soaking tub, floor-to-ceiling tiled walk-in shower, marble countertops, and polished nickel fixtures. Three additional bedrooms, including one en-suite, a full hallway bathroom, and a conveniently located laundry room round out the upper level. The lower level is a full height daylight level with substantial natural light and functional living spaces, anchored by a large flexible great room and a private guest area with its own bathroom and separate exterior entrance. Outside, the expansive and beautifully landscaped lot features a front porch, backyard patio off the French doors, and a brand-new hot tub, all sheltered and private. With meaningful scale, genuine warmth, and one of Boulder's most sought-after addresses, 521 Hawthorn Avenue is the kind of home people tend to stay in for a long time.

Full Property Details for 521 Hawthorn Ave

General

  • Price: $5,095,000
  • Taxes: $38,579 (2025)
  • Status: Active
  • Type: Single Family
  • Source: IRES
  • MLS ID: 1052786
  • Updated: 3/5/2026
  • Added to Site: 1 day(s) ago

Interior

  • Interior Features: Eat-In Kitchen, Separate Dining Room, Open Floorplan, Pantry, Wood Windows, Walk-In Closet(s), Kitchen Island, High Ceilings
  • Fireplace: Yes
  • Fireplace(s): Gas, Living Room
  • Appliances: Gas Range, Double Oven, Dishwasher, Refrigerator, Washer, Dryer, Microwave, Disposal, Fire Alarm
  • Flooring: Wood

Rooms

Bathrooms

  • Total Bathrooms: 5
  • Full Bathrooms: 3
  • 3/4 Bathrooms: 1
  • Half Bathrooms: 1
  • Basement Baths: 1

Bedrooms

  • Total Bedrooms: 5

Exterior

  • Exterior Features: Sprinkler System, Hot Tub
  • Porch/Patio/Deck: Patio, Deck

Parking

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

Location

  • Area: Boulder
  • County: Boulder
  • Subdivision: Newlands

School Information

  • School District: Boulder Valley Dist RE2
  • Elementary School: Foothill
  • Middle School: Casey
  • High School: Boulder

Heating & Cooling

  • Cooling Type: Central Air
  • Heating Type: Zoned, Radiant, Humidity Control

Utilities

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

Structural Information

  • Construction: Wood Siding, Wood Shingle, Painted/Stained
  • Exterior Const.: Wood Siding, Wood Shingle, Painted/Stained
  • Basement: Yes
  • Basement Desc.: Full, Partially Finished, Walk-Out Access
  • Roof: Composition
  • Windows: Window Coverings
  • Square Feet: 7,177
  • Sq. Ft. Source: Other
  • Living Area: 6,602 Sq. Ft.
  • Year Built: 2007

Lot Features

  • Property View: Hills
  • Lot Size (Acres): 0.25
  • Lot Size (Sq. Ft.): 10,724
  • Fence: Yes
  • Lot Features: Evergreen Trees, Deciduous Trees, Level, House Faces South, Paved, Curbs, Sidewalks
  • Potential Use: Single-Family
  • Zoning: SFR
  • Fencing (Description): Partial, Wood

Green Features

  • Energy Efficient: Southern Exposure, Windows

Financial Considerations

  • Tax Amount: $38,579
  • Tax Year: 2025
  • Terms: Cash, Conventional

Disclosures and Reports

  • Special Conditions: Private Owner
  • Exclusions: Owner's Personal Property
  • Property ID: R0511527

Listed by Compass - Boulder (303) 487-5472

Quickly Find Out More

* Indicates a required field

Yes, I would like more information. Please use and/or share my information with a Coldwell Banker ® affiliated agent to contact me about my real estate needs. By clicking Send Message, I request to be contacted by phone or text message and consent to being contacted by automated means. I understand that my consent to receive calls or texts is not a condition of purchasing any property, goods, or services. Alternatively, I understand that I can access real estate services by email or I can contact the agent myself.

If an Coldwell Banker affiliated agent is not available in the area where I need assistance, I agree to be contacted by a real estate agent affiliated with another brand owned or licensed by Anywhere Real Estate (BHGRE®, CENTURY 21®, Corcoran®, ERA®, or Sotheby’s International Realty®). I acknowledge that I have read and agree to the Terms of Use and Privacy Notice.

We Value Your Privacy

Listing agents

— 521 Hawthorn Ave —

  • Compass - Boulder

    303-487-5472

  • Compass - Boulder

    303-487-5472

3035014959

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 521 Hawthorn Ave

School District:Boulder Valley School District Re-2
NameGradesDistance
Foothill Elementary School
1001 Hawthorn Avenue, Boulder, CO 80304
K-50.3 mi
Casey Middle School
1301 High Street, Boulder, CO 80304
6-81 mi
Boulder High School
1604 Arapahoe Avenue, Boulder, CO 80302
9-121.7 mi
Disclaimer: School attendance boundaries provided by Pitney Bowes and are for reference only. Contact the school directly to verify enrollment eligibility.

Price & Sales History for 521 Hawthorn Ave Get Price Alerts and Save Property

Date
Details
Price
Change
Source
3/05/2026
Listed
$5,095,000
63.17%
MLS
8/08/2008
Sold
$3,122,500
—
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 521 Hawthorn Ave

Year
Property Taxes
Change
Tax Assessment
Change
2025
$38,579
2%
$404,606
-6%
2024
$37,825
2%
$430,401
-1%
2023
$37,169
26%
$434,087
27%
2021
$29,403
-5%
$341,598
3%
2022
$30,835
5%
$332,043
15%
2021
$29,403
24%
$289,167
6%
2018
$23,655
3%
$272,837
—
2017
$22,915
-8%
$272,837
-6%
2019
$24,785
27%
$289,167
28%
2016
$19,535
6%
$225,666
—
2015
$18,498
25%
$225,666
31%
2014
$14,776
2%
$171,856
—
2013
$14,450
—
$171,856
—
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 521 Hawthorn Ave

$
Down Payment
%
$
%

$
$

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

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Listed by Compass - Boulder (303) 487-5472

Similar Properties near 521 Hawthorn Ave

This is a carousel with tiles that activate property listing cards. Use the previous and next buttons to navigate.

503 Hawthorn Ave, Boulder, CO 80304 - Photo 1
$5,499,000

503 Hawthorn Ave  Boulder, CO 80304

  • Single Family
  • Active
  • Updated 1 day ago
  • 6
    Beds
  • 6
    Total Baths
  • 5,670
    Sq. Ft.
  • MLS # 1050464
Listed by Compass - Boulder
640 Iris Ave, Boulder, CO 80304 - Photo 1 Price Reduced
-$100,000 (-1.7%)
$5,795,000
Open House

640 Iris Ave  Boulder, CO 80304

  • Single Family
  • Active
  • Updated 1 day ago
  • 4
    Beds
  • 5
    Total Baths
  • 5,226
    Sq. Ft.
  • MLS # 1051046
Listed by The Agency - Boulder
865 Grape Ave, Boulder, CO 80304 - Photo 1
$4,650,000

865 Grape Ave  #X  Boulder, CO 80304

  • Single Family
  • Active
  • 5
    Beds
  • 5
    Total Baths
  • 5,123
    Sq. Ft.
  • MLS # 2596491
Listed by The Bernardi Group (303) 402-6000
1070 Juniper Ave, Boulder, CO 80304 - Photo 1
$5,500,000

1070 Juniper Ave  Boulder, CO 80304

  • Single Family
  • Active
  • Updated 1 day ago
  • 5
    Beds
  • 5
    Total Baths
  • 5,431
    Sq. Ft.
  • MLS # 1044265
Listed by Compass - Boulder

Just Listed near 521 Hawthorn Ave

This is a carousel with tiles that activate property listing cards. Use the previous and next buttons to navigate.

518 Promenade Dr, Superior, CO 80027 - Photo 1 New to Website
$499,900

518 Promenade Dr  Superior, CO 80027

  • Townhouse
  • Active
  • Updated 2 days ago
  • 2
    Beds
  • 3
    Total Baths
  • 2,605
    Sq. Ft.
  • MLS # 5073554
Listed by Welcome Home Real Estate LLC
1244 S Weldona Ln, Superior, CO 80027 - Photo 1 New to Website
$649,900
Open House

1244 S Weldona Ln  Superior, CO 80027

  • Single Family
  • Active
  • Updated 1 day ago
  • 5
    Beds
  • 4
    Total Baths
  • 3,038
    Sq. Ft.
  • MLS # 3579639
Listed by Keller Williams Integrity Real Estate LLC
110 W William St, Superior, CO 80027 - Photo 1 New to Website
$1,999,900

110 W William St  Superior, CO 80027

  • Single Family
  • Active
  • Updated 11 hours ago
  • 6
    Beds
  • 4
    Total Baths
  • 4,270
    Sq. Ft.
  • MLS # 1053196
Listed by CORE Residential
2370 Miner Ln, Superior, CO 80027 - Photo 1 New to Website
$1,199,500

2370 Miner Ln  Superior, CO 80027

  • Single Family
  • Active
  • Updated 12 hours ago
  • 4
    Beds
  • 4
    Total Baths
  • 3,607
    Sq. Ft.
  • MLS # 6698434
Listed by Compass Colorado, LLC - Boulder

Price Reduced near 521 Hawthorn Ave

This is a carousel with tiles that activate property listing cards. Use the previous and next buttons to navigate.

2732 Flint Ct, Superior, CO 80027 - Photo 1 Price Reduced
-$165,000 (-14.16%)
$1,000,000
Open House

2732 Flint Ct  Superior, CO 80027

  • Single Family
  • Active
  • Updated 21 hours ago
  • 6
    Beds
  • 4
    Total Baths
  • 4,156
    Sq. Ft.
  • MLS # 9582511
Listed by KHS Real Estate
8050 Niwot Rd, Niwot, CO 80503 - Photo 1 Price Reduced
-$15,000 (-4.48%)
$320,000

8050 Niwot Rd  #28  Niwot, CO 80503

  • Single Family
  • Active
  • Updated 2 days ago
  • 2
    Beds
  • 1
    Total Bath
  • 882
    Sq. Ft.
  • MLS # 1044035
1308 Snowberry Ln, Louisville, CO 80027 - Photo 1 Price Reduced
-$24,100 (-5.14%)
$444,900

1308 Snowberry Ln  #102  Louisville, CO 80027

  • Condo
  • Active
  • Updated 4 days ago
  • 2
    Beds
  • 2
    Total Baths
  • 1,133
    Sq. Ft.
  • MLS # 9529924
Listed by Vivid Ventures
2020 Hwy 42, Louisville, CO 80027 - Photo 1 Price Reduced
-$60,000 (-3.24%)
$1,790,000

2020 Hwy 42  Louisville, CO 80027

  • Single Family
  • Active
  • Updated 9 hours ago
  • 6
    Beds
  • 4
    Total Baths
  • 3,414
    Sq. Ft.
  • MLS # 1049750
Listed by Keller Williams-Preferred Rlty

Recent Sales near 521 Hawthorn Ave

This is a carousel with tiles that activate property listing cards. Use the previous and next buttons to navigate.

2670 6th St, Boulder, CO 80304 - Photo 1 Sold
$5,090,000

2670 6th St  Boulder, CO 80304

  • Single Family
  • Closed
  • 5
    Beds
  • 6
    Total Baths
  • 4,032
    Sq. Ft.
  • MLS # 1040059
Listed by Compass - Boulder
720 Mapleton Ave, Boulder, CO 80304 - Photo 1 Sold
$4,587,500

720 Mapleton Ave  Boulder, CO 80304

  • Single Family
  • Closed
  • 5
    Beds
  • 6
    Total Baths
  • 5,091
    Sq. Ft.
  • MLS # 1030237
Listed by milehimodern - Boulder
1650 Wilson Ct, Boulder, CO 80304 - Photo 1 Sold
$5,355,000

1650 Wilson Ct  Boulder, CO 80304

  • Single Family
  • Closed
  • 5
    Beds
  • 5
    Total Baths
  • 5,946
    Sq. Ft.
  • MLS # 1044983
Listed and Sold by Compass - Boulder
512 Marine St, Boulder, CO 80302 - Photo 1 Sold
$4,650,000

512 Marine St  Boulder, CO 80302

  • Single Family
  • Closed
  • 4
    Beds
  • 5
    Total Baths
  • 4,904
    Sq. Ft.
  • MLS # 1044486
Listed by RE/MAX of Boulder, Inc
Sold by RE/MAX of Boulder, Inc

521 Hawthorn Ave, Boulder, CO 80304 (MLS# 1052786) is a Single Family property with 5 bedrooms, 3 full bathrooms and 2 partial bathrooms. 521 Hawthorn Ave is currently listed for $5,095,000 and was received on March 05, 2026. Want to learn more about 521 Hawthorn Ave? 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.

Tour this property