A classic aesthetic meets modern luxury with this exceptional residence nestled on an oversized lot in Boulder's sought-after Newlands neighborhood. Though this masterfully designed home spans over 7,000 sqft, its thoughtful layout and cozy gathering spaces create a warm, welcoming feel that lives much more comfortably & intimate than its size suggests. The front living room, anchored by a gas fireplace, and adjacent formal dining room, provide elegant entertaining spaces for dinner parties and holidays. Moving into the heart of the home, you'll find an expansive and open family room that integrates brilliantly into the gourmet kitchen with premium appliances, center island, and dining nook. A sizable mudroom gives you convenient direct access to a heated garage. Ebony-stained floors replete with in-floor radiant heat, and oversized windows throughout the main level, create an abundance of warmth and natural light. Proceed up the stairs and mid-flight you'll find a dedicated home office space that is removed from the main living spaces for privacy and focus, yet still connected to the rhythm of home life. The upper level presents 4 bedrooms, including a spacious and bright primary suite with magnificent bay windows. The fourth bedroom has a dedicated bathroom ensuite. A convenient laundry room completes the upper floor. The finished lower level features a large great room for games, movie viewing or a fitness space. Situated on a magnificent 10,000+ square foot level lot, this property's outdoor spaces enhance its appeal. Professional landscaping and a patio complete with a brand new hot tub create a perfect backdrop for entertaining. This premier Newlands location offers the perfect balance of privacy and accessibility, positioned just moments from neighborhood trails and schools. Enjoy proximity to both North Boulder and Downtown amenities, including the nearby Ideal Market and Pearl Street Mall.
For sale
Price cut: $255K (4/18)
$5,995,000
521 Hawthorn Ave, Boulder, CO 80304
5beds
7,177sqft
Est.:
Residential-Detached, Residential
Built in 2008
10,724 Square Feet Lot
$-- Zestimate®
$835/sqft
$-- HOA
What's special
- 111 days
- on Zillow |
- 293 |
- 11 |
Zillow last checked: 7 hours ago
Listing updated: May 26, 2025 at 03:18am
Listed by:
The Zach Zeldner Team 720-480-7650,
Compass - Boulder,
Ethan Bullock 303-501-4959,
Compass - Boulder
Source: IRES,MLS#: 1026271

Travel times
Tour with a buyer’s agent
Tour with a buyer’s agent
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 5
- Bathrooms: 5
- Full bathrooms: 3
- 3/4 bathrooms: 1
- 1/2 bathrooms: 1
Primary bedroom
- Area: 323
- Dimensions: 19 x 17
Bedroom 2
- Area: 182
- Dimensions: 13 x 14
Bedroom 3
- Area: 182
- Dimensions: 13 x 14
Bedroom 4
- Area: 182
- Dimensions: 13 x 14
Bedroom 5
- Area: 270
- Dimensions: 15 x 18
Dining room
- Area: 195
- Dimensions: 13 x 15
Family room
- Area: 408
- Dimensions: 17 x 24
Kitchen
- Area: 350
- Dimensions: 14 x 25
Living room
- Area: 400
- Dimensions: 20 x 20
Heating
- Zoned, Radiant, Humidity Control
Cooling
- Central Air
Appliances
- Included: Gas Range/Oven, Double Oven, Dishwasher, Refrigerator, Washer, Dryer, Microwave, Disposal
- Laundry: Upper Level
Features
- Study Area, Eat-in Kitchen, Separate Dining Room, Open Floorplan, Pantry, Walk-In Closet(s), Kitchen Island, High Ceilings, Open Floor Plan, Walk-in Closet, 9ft+ Ceilings
- Flooring: Wood, Wood Floors, Tile, Carpet
- Windows: Window Coverings, Wood Frames, Double Pane Windows, Wood Windows
- Basement: Full,Walk-Out Access
- Has fireplace: Yes
- Fireplace features: Gas, Living Room
Interior area
- Total structure area: 7,177
- Total interior livable area: 7,177 sqft
- Finished area above ground: 4,775
- Finished area below ground: 2,402
Video & virtual tour
Property
Parking
- Total spaces: 2
- Parking features: Garage - Attached
- Attached garage spaces: 2
- Details: Garage Type: Attached
Features
- Levels: Two
- Stories: 2
- Patio & porch: Patio, Deck
- Exterior features: Hot Tub Included
- Spa features: Heated
- Fencing: Partial,Wood
- Has view: Yes
- View description: Hills
Lot
- Size: 10,724 Square Feet
- Features: Curbs, Sidewalks, Lawn Sprinkler System, Level
Details
- Parcel number: R0511527
- Zoning: RES
- Special conditions: Private Owner
Construction
Type & style
- Home type: SingleFamily
- Property subtype: Residential-Detached, Residential
Materials
- Wood/Frame, Wood Siding, Shingle Siding, Painted/Stained
- Roof: Composition
Condition
- Not New, Previously Owned
- New construction: No
- Year built: 2008
Utilities & green energy
- Electric: Electric, Xcel
- Gas: Natural Gas, Xcel
- Sewer: City Sewer
- Water: City Water, City of Boulder
- Utilities for property: Natural Gas Available, Electricity Available
Green energy
- Energy efficient items: Southern Exposure
Community & HOA
Community
- Subdivision: Newlands
HOA
- Has HOA: No
Location
- Region: Boulder
Financial & listing details
- Price per square foot: $835/sqft
- Tax assessed value: $6,478,900
- Annual tax amount: $37,825
- Date on market: 2/12/2025
- Listing terms: Cash,Conventional
- Exclusions: Owner's Personal Property
- Electric utility on property: Yes
- Road surface type: Paved
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