850 20th Street # 404 Boulder, CO ^$ 375,000

850 20th Street # 404

^$ 375,000

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850 20th Street # 404

Boulder, CO, 80302

^$ 375,000

Bedrooms1 Baths1.0 Sq 720

Monthly Estimate*

^$ 2,590

Listed by Coldwell Banker Realty 24

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Condo for sale in Boulder, CO

for $375,000 with 1 bedroom and 1 full bath. This 720 square foot condo was built in 1967.

A Smart Investment in the Heart of Boulder Location, convenience, and long-term value come together in this well-positioned 1-bedroom, 1-bath condo in the quiet and secure San Marco North building. Just steps from CU Boulder, this property offers an ideal opportunity for buyers seeking a low-maintenance investment in one of Boulder’s most desirable and consistently sought-after locations. The location is truly hard to beat—with CU campus, Chautauqua, hiking and biking trails, The Hill, and Downtown Boulder all nearby. Whether you're looking for a property to enjoy yourself or a strategically located real estate investment, this condo offers the lifestyle and accessibility that help support enduring demand. The private outdoor deck extends the living space and provides peek-a-boo views of the mountains and CU campus. Residents also enjoy a secure building entrance, elevator access, common laundry, a storage locker, and one reserved parking space—valuable conveniences in Boulder. One of the property's standout features is the common rooftop terrace, where breathtaking panoramic views stretch across Boulder’s city lights and the iconic Flatirons. HOA dues include heat and water/sewer, helping simplify ownership and provide greater predictability for monthly expenses. For buyers looking beyond simply purchasing a home, this is an opportunity to own a piece of Boulder real estate in a location with enduring appeal. With its proximity to CU, outdoor recreation, Downtown Boulder, and everyday amenities, San Marco North offers the combination of location and convenience that can make a property a compelling long-term investment. An exceptional Boulder location. A low-maintenance lifestyle. A smart addition to your real estate portfolio.

Condo Active

Price

^$ 375,000

Bedrooms

Full Bath

Property Type

Condo

Taxes

^$ 2,558

Style

Condominium

Year Built

1967

Town/City

Boulder

County/Region

Boulder

MLS | Web ID

1584266

Features

General

Living Area 720

Sewer Public Sewer

Heating Baseboard

Cooling Air Conditioning-Room

Roof Other

Appliances Convection Oven Cooktop Refrigerator

HOA Fee 559

Garage Spaces 0

Association Fee Includes Reserve Fund Heat Maintenance Structure Security Sewer Trash Water

Construction Materials Brick

Year Built 1967

Levels One

Unit Number 404

Property Subtype Condominium

Parcel Number R0083147

Assoc Fee Paid Per Monthly

County Boulder

Property Type Residential

Association Amenities Elevator(s) Laundry Storage

HOA Y

Attached Garage N

Subdivision Name San Marco North Condominiums

Full Baths 1

High School Boulder

City Boulder

Senior Community Y/N N

High School District Boulder Valley RE 2

Carport Spaces 0

Elementary School Flatirons

Property Attached Y/N Y

Tax Annual Amount 2558

Middle/Junior High School Manhattan

Virtual Tour https://s3.amazonaws.com/video.creativeedge.tv/923914-4.mp4

Standard Status Active

Middle/Junior School District Boulder Valley RE 2

Elementary School District Boulder Valley RE 2

Freehold IDX

Exterior

Exterior Amenities Balcony

Interior

Half Baths 0

1/4 Baths 0

3/4 Baths 0

Total Bedrooms 1

Entry Level 4

Total Baths 1

* Excluded Features

List By

Coldwell Banker Realty 24

Broker

720-810-2931

Contact

Affordability Calculator

$2,803

Per Month

Monthly Principal & Interest: $2,590
Monthly Property Taxes: $213
Monthly Home Insurance: --

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Default based on a 30-year fixed rate of 7.375% with 20% down. The estimated payment is offered for convenience and is not an offer of credit. Due to market fluctuations, interest rates are subject to change at any time and without notice. Your individual rate may vary. Rates may differ for FHA, VA or jumbo loans.

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Nearby

Trends
Schools

Condo listings in Boulder, CO

Average List Price ^$588,371

Percent of Sale Price 57%

About Boulder, CO

102,151 Population

6% Since 2002

^$65,436 Median Income

31.88 Median Age

18% Households with Children

View more area information

Trends Information provided by ATTOM Data Solutions.

1956937 Elementary School

1957357 Middle School

Boulder High School High School

See complete school information

Pricing History

Date	Price	Price Change	Description
9/10/2026	$375,000		Listed Price

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850 20th Street # 404, Boulder, CO, 80302 is a Condo for sale at $375,000 with 720 sqft. 850 20th Street # 404 has 1 bedrooms, 1.0 baths, and was built in 1967. The property's zip code is 80302 which is in Boulder, CO

*Information deemed reliable but not guaranteed.

Financial calculator disclaimer: Default based on a 30-year fixed rate of 7.375% with 20% down. The estimated payment is offered for convenience and is not an offer of credit. Due to market fluctuations, interest rates are subject to change at any time and without notice. Your individual rate may vary. Rates may differ for FHA, VA or jumbo loans.

The data relating to real estate on this web site comes in part from the Internet Data eXchange (IDX) Program of the REcolorado. Real estate listings held by firms other than Weichert Realtors are marked with the IDX logo and detailed information about them includes the Listing Broker’s Firm Name.

The information being provided is for consumers personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.

Data is updated as of 10/22/2026.

This publication is designed to provide information with regard to 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.

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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.

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850 20th Street # 404

Condo for sale in Boulder, CO

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