New39
$8,950,000
7 bd · 5 ba · 6,988 sqft
3633 21st St, Boulder, CO
Marybeth Emerson · on 2 MLSs
Est. $54,990/mo$842/sqft · 185 days on Realty
6
Beds
8
Baths
10,092
Sqft
1950
Built
This exceptional luxury residence blends mountain elegance with refined design, just two blocks from scenic trails at the base of the foothills. Set on nearly an acre, the lush, secluded, landscaped grounds, complete with Silver Lake Ditch water rights, feature mature trees, gardens, multiple patios, and a private pool - currently unfilled in support of local water conservation efforts, but is designed and ready for future enjoyment, creating a serene, Aspen-inspired retreat in one of Boulder's most coveted neighborhoods. The backyard is further enhanced by an elaborate custom playground complete with a clubhouse, climbing wall, slide, swings, and gym rings, offering an exceptional outdoor experience. Inside, 20-foot vaulted ceilings and floor-to-ceiling windows fill the living spaces with light, complemented by six fireplaces throughout. The home offers two primary suites with spa-like baths, including a steam shower, soaking tub, and expansive walk-in closet, along with multiple ensuite bedrooms. An extraordinary walk-in pantry with abundant open shelving, along with additional closet storage and built-in shelving throughout, elevates both functionality and organization. A main-level office, upstairs study, and library with fireplace provide ideal work and relaxation spaces, while flexible areas include a playroom, rec room, and private studio apartment featuring the added convenience of a small refrigerator. Skylights, striking architectural details, and ideally situated decks with breathtaking Flatirons views are complemented by the added convenience of a dedicated kitchen generator, completing this truly exceptional property.
Listing record
Choose a source to show its complete, unblended listing record.
Showing REcolorado
REcolorado · Listing RECIR1056446
Courtesy of WK Real Estate
Listing agent
Joyce Pollich
(303) 249-6501
IRES MLS · Listing IRE1056446
Courtesy of brokerage not provided
Listing agent
Joyce Pollich
(303) 249-6501
$1,700,000
Estimated monthly payment
$54,990/mo
Loan amount $6,800,000. Estimate only — your actual rate and payment depend on credit, location, and lender.
2026 roll
IRES MLS
REcoloradoThis content last refreshed on 2026-10-16 19:26:56 UTC. Some properties which appear for sale on this web site may subsequently have sold or may no longer be available.
New39
$8,950,000
7 bd · 5 ba · 6,988 sqft
3633 21st St, Boulder, CO
Marybeth Emerson · on 2 MLSs
20$6,500,000
6 bd · 7 ba · 5,356 sqft
2090 Orchard Ave, Boulder, CO
Hunter Jorgensen · on 2 MLSs
50$6,895,000
5 bd · 4 ba · 4,578 sqft
700 Utica Ave, Boulder, CO
Stephen Remmert · on 2 MLSs
42$7,995,000
5 bd · 7 ba · 7,160 sqft
166 Valley View Way, Boulder, CO
Jennifer Eiss · on 2 MLSs
Price Reduced37$6,750,000
5 bd · 5 ba · 7,254 sqft
2158 Tamarack Ave, Boulder, CO
Jennifer Egbert · on 2 MLSs
48$9,995,000
5 bd · 5 ba · 7,016 sqft
1530 Timber Lane, Boulder, CO
Patrick Brown · Compass - Boulder





School ratings (A+ to F) from HJN community data.
Foothill Elementary School
KG-5 · Regular · Boulder Valley School District Re-2
419 students · 16.6:1 student–teacher
Jarrow Montessori School
PK-6 · Montessori
81 students · 10.1:1 student–teacher
Watershed School
6-12 · Alternative/Other
111 students · 6.8:1 student–teacher
Casey Middle School
6-8 · Regular · Boulder Valley School District Re-2
363 students · 12.6:1 student–teacher
Columbine Elementary School
PK-5 · Regular · Boulder Valley School District Re-2
369 students · 14.9:1 student–teacher
Sacred Heart of Jesus School
KG-8 · Regular
190 students · 11.5:1 student–teacher
Mapleton Early Childhood Center
PK-PK · Regular · Boulder Valley School District Re-2
68 students · 19.4:1 student–teacher
Centennial Middle School
6-8 · Regular · Boulder Valley School District Re-2
598 students · 19.4:1 student–teacher
Within 2 miles of this home: 40+ restaurants and cafés, 8 grocery stores, 38+ parks and green spaces, and 27+ transit stops.
Place data from OpenStreetMap.
Lucky's Bakehouse and Creamery
Broadway
Dagabi Cucina
Spanish restaurant · Broadway
China Gourmet
Chinese restaurant · Broadway
Lucky's Bakehouse Cafe
Broadway
Ruzo Coffee
Pekoe Sip House
Alpine Avenue
Noodles & Company
Alpine Avenue
Santo
Mexican restaurant · Alpine Avenue
Lucky's Market
Broadway
Whole Foods Market
Alpine Avenue
Safeway
28th Street
Boulder Farmers Market
13th Street
India's Grocery
28th Street
Natural Grocers
Pearl Street
Las 10 Americas Carniceria and Supermarket
Trader Joe's
28th Street
Maxwell Lake
Maxwell Lake Park
Maxwell Reservoir
Fredrick Law Olmsted, Jr. Park
Melody Park
Hawthorn Community Gardens
North Boulder Park
Dellwood Avenue
Pine View Park
Broadway & Iris Ave
Broadway & Hawthorne Ave
Broadway & Hawthorn Ave
Broadway & Kalmia Ave
Iris Ave & 13th St
Iris Ave & Broadway
Broadway & Grape Ave
Broadway & Linden Ave