Property photo 1
Property photo 2
Property photo 3
Property photo 4
Property photo 5
7 Beds
5 Baths
6,988 sqft

$8,950,000

3633 21st Street, Boulder CO, 80304

Price per sqft$1,280.77
Built in2024
Property size6,988 sqft
Property typeResidential

Overview

Active

Listed Oct 16, 2026

Updated 12h ago

Exquisite secluded sanctuary in the heart of Carolyn Heights. Tucked into one of Boulder's most prestigious enclaves, this gated 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. Awaken each morning as you do in your favorite boutique hotel; surrounded by nature and peace. 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. The primary suite is a haven unto itself with vaulted ceilings, a spa-inspired bath, spacious walk-in closet, and private deck access. With multiple flexible living spaces-including a dedicated home office and media room, this home is ready to adapt to your every need. Located minutes from North Boulder's best hiking trails, cycling routes, farmers markets, and local eateries-yet nestled in the peaceful privacy of a mature, sought-after neighborhood. Elevated living starts here. LIVE BOULDER, LOVE BOULDER! Original home built in 1987. Home had a studs up remodel that was completed in early 2024.

$59,545/mo

Est. mortgage payment based on a $8,950,000 home price.

All estimates are provided by Luxury Presence for informational purposes only. Actual amounts may vary.

Additional information

MLS® ID
IR1070740

Interior Features

Bedrooms
7
Bathrooms
5
Fireplace
Yes
Cooling
Yes
Heating
Yes
Basement
Yes

Exterior Features

Lot Size
0.81 Acres

Other Property Details

Taxes
$29,641
Tax Frequency
Annually
Garage
Yes
View
Yes
MLS provider logo
Listed by The Agency - Boulder, Marybeth Emerson, Listing Contact: 7203941997 
 

1. This publication is designed to provide information regarding the subject matter covered. It is displayed with the understanding that the publisher and authors are not engaged in rendering real estate, legal, accounting, tax, or other professional services and that the publisher and authors are not offering such advice in this publication. If real estate, legal, or other expert assistance is required, the services of a competent, professional person should be sought.

2. The information contained in this publication is subject to change without notice. METROLIST, INC., DBA RECOLORADO MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. METROLIST, INC., DBA RECOLORADO SHALL NOT BE LIABLE FOR ERRORS CONTAINED HEREIN OR FOR ANY DAMAGES IN CONNECTION WITH THE FURNISHING, PERFORMANCE, OR USE OF THIS MATERIAL.

3. PUBLISHER’S NOTICE: All real estate advertised herein is subject to the Federal Fair Housing Act and the Colorado Fair Housing Act, which Acts make it illegal to make or publish any advertisement that indicates any preference, limitation, or discrimination based on race, color, religion, sex, handicap, familial status, or national origin.

4. METROLIST, INC., DBA RECOLORADO will not knowingly accept any advertising for real estate that is in violation of the law. All persons are hereby informed that all dwellings advertised are available on an equal opportunity basis.

5. Equal Housing Opportunity - see logo above.

6. © 2020 METROLIST, INC., DBA RECOLORADO® – All Rights Reserved 6455 S. Yosemite St., Suite 500, Greenwood Village, CO 80111 USA 7. ALL RIGHTS RESERVED WORLDWIDE. No part of this publication may be reproduced, adapted, translated, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of the publisher. The information contained herein including but not limited to all text, photographs, digital images, virtual tours, may be seeded and monitored for protection and tracking.

Properties displayed may be listed or sold by various participants in the MLS.

©2026 REColorado. All rights reserved. 

Data last updated 3:40 AM UTC, 10/17/2026

DMCA Notice

 

 

Powered by Luxury Presence