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Photo 1 of 20: 521 Hawthorn Avenue is a home with meaningful scale and genuine warmth, set on an oversized lot in one of Boulder's most sought-after neighborhoods.
521 Hawthorn Avenue is a home with meaningful scale and genuine warmth, set on an oversized lot in one of Boulder's most sought-after neighborhoods.
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521 Hawthorn Ave, Boulder, CO 80304

Newlands · Boulder County

Key Facts

5Beds
5Baths
6,602Sq Ft
2007Year Built
0.25Lot (acres)
2Garage

Description

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.

Property Information

Property Type

Residential

Sub-Type

Single Family Residence

Year Built

2007

Living Area

6,602 sq ft

Lot Size

0.25 acres

Garage Spaces

2

Zoning

SFR

Days on Market

128

MLS® Listing#

1052786

Property Features

Interior

Eat-in KitchenOpen FloorplanPantryWalk-In Closet(s)Kitchen IslandHigh Ceilings

Appliances

Gas RangeDouble OvenDishwasherRefrigeratorWasherDryerMicrowaveDisposal

Cooling

Central Air

Heating

ZonedRadiantHumidity Control

Flooring

Wood

Fireplace

GasLiving Room

Basement

FullPartially FinishedWalk-Out Access

Parking

Attached

Patio

PatioDeck

Fencing

PartialWood

Lot Features

LevelPaved

Construction

Wood Siding

Roof

Composition

Windows

Window CoveringsWood Frames

Security

Fire Alarm

Utilities

Natural Gas AvailableElectricity Available

Sewer

Public Sewer

Water Source

Public

Rooms

  • 33x40Basement
  • 19x17Upper
  • 11x23Upper
  • Bedroom 213x14Upper
  • Bedroom 313x14Upper
  • Bedroom 413x14Upper
  • Bedroom 515x18Basement
  • Dining Room13x15Main
  • Family Room17x24Main
  • Kitchen14x25Main
  • Laundry9x6Upper
  • Living Room20x20Main

Schools

Elementary:
Foothill
Middle:
Casey
High:
Boulder

Financial Details

HOA

None

Annual Taxes

$38,579

Tax year 2025

Parcel Number

R0511527

Affordability Calculator

$1,000,000

Estimated monthly payment

$26,612/mo

Principal $3,999,999 · Est. interest $5,580,355 over 30 yrs

Neighborhood Market Statistics

How this home compares to active listings in Boulder, CO

$1,000,000
Median Listing Price
63
Median Days on Market
2,038
Median Sq Ft
$568
Median Price / Sq Ft
1,389
Active Listings
  • This home’s price is 400% above the area median.
  • Its price per sq ft is 33% above the area median.

Market statistics compiled from active EXIT Realty® and MLS listings in Boulder, CO.

Location

Map showing the location of 521 Hawthorn Ave, Boulder, CO 80304

Points of Interest in Boulder, CO

Showing the Boulder area map.

Nearby Schools

  • Foothill Elementary School

    Elementary · 0.3 mi away

  • Blue Sky Kindergarten

    Elementary · 0.5 mi away

  • Jarrow Montessori School

    Elementary · 0.8 mi away

  • Watershed School

    School · 1.0 mi away

  • Mount Zion Lutheran Church & School

    Elementary · 1.0 mi away

  • Casey Middle School

    Secondary · 1.0 mi away

  • Mapleton Ecc-BVSD

    School · 1.1 mi away

  • Columbine Elementary School

    Elementary · 1.1 mi away

  • Shining Mountain Waldorf School

    Elementary · 1.3 mi away

  • Centennial Middle School

    Secondary · 1.3 mi away

  • Crest View Elementary School

    Elementary · 1.4 mi away

  • Snow Lion School

    School · 1.4 mi away

  • Tara Performing Arts High School

    Secondary · 1.4 mi away

  • Whittier Elementary School

    Elementary · 1.4 mi away

  • Doorways English School for International Women

    School · 1.5 mi away

  • New Horizons Cooperative Preschool - Boulder

    School · 1.5 mi away

  • Highland School

    School · 1.5 mi away

  • September School

    Secondary · 1.6 mi away

  • Boulder High School

    Secondary · 1.7 mi away

  • Mapleton Montessori School

    Elementary · 1.8 mi away

Commute Calculator

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Nearby Homes

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Similar Home Values

Comparable nearby listings and their asking prices.

AddressPriceBedsBathsSq Ft
5366 Westridge Drive, Boulder, CO$3,500,000566,747
5366 Westridge Dr, Boulder, CO$3,500,000566,747
8758 W Phillips Road, Boulder, CO$3,500,000466,098
8758 W Phillips Rd, Boulder, CO$3,500,000466,098
934 Spruce St, Boulder, CO$3,500,000442,196
934 Spruce Street, Boulder, CO$3,500,000442,196

Moving Cost Estimate

EXIT Agents in Boulder

The data relating to real estate for sale on this web site comes in part from the Internet Data Exchange (IDX) program of one or more Multiple Listing Services (MLS). Listing information is deemed reliable but is not guaranteed accurate. Copyright © EXIT Realty® and respective MLS providers.

Data provided by IRES. MLS® Listing#1052786. © 2026EXIT Realty®. All rights reserved.