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.
Utility FeaturesNatural Gas Available, Electricity Available
SEWERPublic Sewer
WATER SOURCECity
Year Built2007
BasementFull, Partially Finished, Walk-Out Access
FINISHED BASEMENT SIZE2402.0
RoofComposition
EXTERIOR FEATURESSprinkler System, Hot Tub
Parking FeaturesAttached
FencePartial, Wood
Lot FeaturesEvergreen Trees, Deciduous Trees, Level, House Faces South, Paved, Curbs, Sidewalks
Garage spaces2
ViewHills
CITYBoulder
SUBDIVISIONNewlands
COUNTYBoulder
AREABoulder
STATECO
TAX AMOUNT38579.0
LATEST UPDATE2026-03-07T20:54:31.246Z
DAYS ON MARKET3
PRICE CHANGE(S)
$5,095,000 Mar 3, 2026
Market Trends
New Properties On Market
66
57%
Increase In New Listings
Average Asking Price
$2,625,148
$198,545 Decrease In Avg Asking Price
Average Asking Price / Sq. Ft.
$827
$70 Decrease In List Price/Sq. Ft.
Average Days On Market
13
26 Day
Decrease In Days On Market
Data as of Mar 13, 2026.
Remaining statistics above are calculated on activity within the period from Jan 01, 2026 to Feb 28, 2026.
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