Residential · Active
Boulder, CO 80304
5 Beds · 5 Baths · 6,602 Sq Ft
$4,999,999
Single Family
Property Type
0.25 acres
Lot Size
2007
Year Built
$757
Price per Sq Ft
2
Parking Spaces
IR1052786
MLS #
About This Property
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.
231 days on market
Listed by The Zach Zeldner Team & Ethan Bullock · Compass - Boulder · 3035014959
Property Details
| Property Type | Residential |
| Sub Type | Single Family Residence |
| Status | Active |
| Price per Sq Ft | $757 |
| Subdivision | Newlands |
| MLS # | IR1052786 |
| Days on Market | 231 |
| Bedrooms | 5 |
| Full Baths | 3 |
| Half Baths | 1 |
| Three-Quarter Baths | 1 |
| Year Built | 2007 |
| Lot Size (Sq Ft) | 10,724 |
| Acres | 0.25 |
| HOA | No |
| Annual Taxes | $38,579 |
| State | CO |
| County | Boulder |
| Zoning | SFR |
| Interior Features | Eat-in Kitchen, Kitchen Island, Open Floorplan, Pantry, Walk-In Closet(s) |
| Heating | Radiant |
| Cooling | Central Air |
| Flooring | Tile, Wood |
| Fireplace Features | Gas, Living Room |
| Appliances | Dishwasher, Disposal, Double Oven, Dryer, Humidifier, Microwave, Oven, Refrigerator, Washer |
| Exterior Features | Spa/Hot Tub |
| Garage | Yes |
| Garage Spaces | 2 |
| Roof | Composition |
| Basement | Full, Walk-Out Access |
| Lot Features | Level, Sprinklers In Front |
| Levels | Two |
| Construction | Wood Siding |
| Sewer | Public Sewer |
| Water Source | Public |
Location
Price History
| Date | Event | Price |
|---|---|---|
| 3/3/2026 |
Listed for sale Source: REcolorado® #IR1052786 |
$4,999,999 $757/sqft |
Based on information submitted to the MLS GRID as of October 20, 2026 at 1:09 PM MDT. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information.
Thank you — a Mont Haus broker will be in touch shortly.