3633 21st Street, Boulder, CO 80304

Local realty services provided by:ERA Shields Real Estate
3633 21st Street,Boulder, CO 80304
$11,500,000
  • 7 Beds
  • 5 Baths
  • 6,988 sq. ft.
  • Single family
  • Active
Listed by:marybeth emerson7203941997
Office:the agency - boulder
MLS#:IR1031592
Source:ML

Price summary

  • Price:$11,500,000
  • Price per sq. ft.:$1,645.68

About this home

Exquisite secluded sanctuary in the heart of Carolyn Heights. Tucked into one of Boulder's most prestigious enclaves, this estate offers a rare fusion of luxury, privacy, and relaxed sophistication . Set on a serene, tree-lined .81-acre level lot, this 7-bedroom, 5-bathroom oasis is where inspired design meets effortless living. Stunning views of the Flatirons awaken you each morning from your bed. Those same views tease your senses from the expansive patios with fully retractable doors that blur the lines from inside to outside. Bathed in natural light from soaring windows and skylights, every detail has been thoughtfully curated. Custom walnut doors and paneling welcome you into the home and invite you to explore. The chef's kitchen is a showstopper-featuring custom cabinetry, an oversized marble island, and top-of-the-line Thermador appliances. The open-concept layout flows seamlessly into a lush backyard oasis, perfect for gatherings or quiet moments of retreat by the fire pit.

Contact an agent

contact an agent

Yes, I would like more information from ERA®. Please use and/or share my information with an ERA affiliated agent to contact me about my real estate needs. By clicking Send message, I agree an ERA affiliated agent may contact me by phone or text message including by automated means about real estate services, and that I can access real estate services without providing my phone number. I acknowledge that I have read and agree to theTerms of useandPrivacy notice

Home facts

  • Year built:2024
  • Listing ID #:IR1031592

Rooms and interior

  • Bedrooms:7
  • Total bathrooms:5
  • Full bathrooms:3
  • Half bathrooms:1
  • Living area:6,988 sq. ft.

Heating and cooling

  • Cooling:Air Conditioning-Room, Ceiling Fan(s)
  • Heating:Hot Water, Radiant

Structure and exterior

  • Roof:Composition
  • Year built:2024
  • Building area:6,988 sq. ft.
  • Lot area:0.81 Acres

Schools

  • High school:Boulder
  • Middle school:Centennial
  • Elementary school:Columbine

Utilities

  • Water:Public
  • Sewer:Public Sewer

Finances and disclosures

  • Price:$11,500,000
  • Price per sq. ft.:$1,645.68
  • Tax amount:$29,936 (2024)
MLS LogoBased on information submitted to the MLS GRID as of October 3, 2025 02:24 PM. 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.

New listings near 3633 21st Street