Metro Denver Luxury Homes For Sale

Property Description

OPEN SATURDAY 11 AM – 2 PM! A rare find in Mapleton Hill! Beautifully remodeled down to the studs in 2020 and complemented by a brand-new $1, 000, 000 ADU, this unique home brings together historic charm, gorgeous modern finishes and exceptional flexibility. Filled with natural light, the home offers an inviting flow with spaces that feel both connected and comfortable. Exposed brick adds warmth and character, while hardwood floors and thoughtfully chosen finishes create a cohesive feel throughout. The custom kitchen is a standout, featuring Wolf appliances, a Sub-Zero refrigerator and a charming built-in corner table-the perfect gathering spot for morning coffee or a casual meal. The main level includes a spacious study, a bedroom, a full bath and a powder room, providing wonderful options for guests and working from home. An elegant staircase with custom treads and metal detailing leads upstairs to the primary suite, where a generous deck captures foothill views and beautiful sunsets. It’s a lovely place to start the day or unwind in the evening. The walkout lower level expands the living space with a recreation room, two additional bedrooms and a three-quarter bath, offering room to spread out and host guests comfortably. Adding to this exceptional property is the brand-new ADU with high end finish, bringing another dimension to the home’s versatility and appeal. Walk to the Mount Sanitas trails for a morning hike or head to Pearl Street for shopping, dining and all the energy of downtown Boulder. With its blend of timeless character, modern comfort and a coveted Mapleton Hill setting, 661 Maxwell captures the best of Boulder living and with the Sundance Film Festival coming to Boulder in 2027, this location offers even more to look forward to. The main house is 3048 sq ft. ADU 1063 with a separate entrance basement 576 sq ft (great for storage!)

Features
: Radiant, Forced Air
: Central Air, Ceiling Fan(s), Ductless
: Full, Unfinished, Walk-Out Access
: Partial
: Mountain(s)
: Gas, Living Room
: Smoke Detector(s)
: Deck, Patio
: Dryer, Dishwasher, Disposal, Microwave, Refrigerator, Self Cleaning Oven, Washer, Oven
: Composition
: Public Sewer
Address Map
CO
Boulder
Boulder
80304
Maxwell
661
Avenue
W106° 42' 46.2''
N40° 1' 19.1''
Additional Information
: Brick
7
Whittier E-8
: Wood
Boulder
: Pantry, Open Floorplan, Eat-in Kitchen, Walk-In Closet(s), In-Law Floorplan
Yes
Yes
Cash, Conventional
: Sprinklers In Front
Casey
RE/MAX of Boulder, Inc
R0008550
: House
Mapleton Hill
$15,843
2025
: Natural Gas Available
Res
10/08/2026
4687
Active
IRP09322
IRBOUL
Boulder Valley RE 2
Boulder Valley RE 2
In Unit
10/15/2026
Multi-Family, Residential
10/15/2026
Public
: Two

Mapleton Hill

661 Maxwell Avenue, Boulder, CO 80304

5 Bedrooms
6 Total Baths
4,111 Square Feet
$4,975,000
Listing ID #IR1070334
Basic Details
Property Type : Residential
Listing Type : For Sale
Listing ID : IR1070334
Price : $4,975,000
Bedrooms : 5
Rooms : 15
Total Baths : 6
Full Bathrooms : 2
3/4 Bathrooms : 3
1/2 Bathrooms : 1
Square Footage : 4,111 Square Feet
Year Built : 1910
Lot Acres : 0.16
Property Sub Type : Single Family Residence
Status : Active
Co List Agent Full Name : Patrick Dolan
Co List Office Name : RE/MAX of Boulder, Inc
Originating System Name : REcolorado
Mortgage Calculator
$
$ %
years
%
$ %per year
$ %per year

$
Contact Agent
Open Dates
  • 1. 2026-10-17 (Start time: 11:00 - End time: 14:00)