See Home Value
$446,096*
● Townhouse - Off Market

850 20th St #404

Boulder, CO 80302
bedrooms
1 Bed
bathrooms
1 Bath
square feet
720 Ft²
$279,000 - $341,000
Reference Base Price*
43.90%
Since Jan 1, 2019
CO-Denver
Primary Model

About This Property

The Best of Boulder! Amazing views from the rooftop deck, quiet end unit on the 4th floor, access to swimming pool, secure building, elevator, reserved parking space, steps away from CU campus! This won't last long! One bedroom, one bath, exposed brick wall in living room with private balcony.

The manager has listed the unit size as 720 square feet.
Unit Size
720 Ft²
Days on Market
-
Land Size
-
Price per sqft
$431
Property Type
Townhouse
Property Taxes
$144
HOA Dues
$28
Year Built
-

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Price History

Date / Event Date Event Price
Sep 15, 2026 Listed $375,000
Listed
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.
Dec 2, 2018 No longer available -
No longer available
Nov 27, 2018 Listed $310,000
Listed

Property Highlights

Comparables

Unit
Status
Type
Beds
Baths
ft²
Price/ft²
Asking Price
Listed On
Closing Price
Sold On
HOA + Taxes

Past Sales

Date Unit Beds Baths Sqft Price Closed Listed By
20260910 Unit 404
09/10/2026
404
1 Bed
1 Bath
720 ft²
$375,000
bedrooms
1 Bed
bathrooms
1 Bath
square feet
720 ft²
-
-
Hallie Rand
Coldwell Banker Realty 24
20260512 Unit 203
05/12/2026
203
1 Bed
1 Bath
672 ft²
$320,000
bedrooms
1 Bed
bathrooms
1 Bath
square feet
672 ft²
$320,000
07/08/2026
Rene Vellinga
RE/MAX Alliance-Boulder
20260402 Unit 406
04/02/2026
406
1 Bed
1 Bath
709 ft²
$400,000
bedrooms
1 Bed
bathrooms
1 Bath
square feet
709 ft²
-
-
Janet Leap
RE/MAX of Boulder, Inc
20260316 Unit 502
03/16/2026
502
2 Bed
1 Bath
930 ft²
$650,000
bedrooms
2 Bed
bathrooms
1 Bath
square feet
930 ft²
-
-
John McElveen
milehimodern - Boulder
20250722 Unit 403
07/22/2025
403
1 Bed
1 Bath
672 ft²
$395,000
bedrooms
1 Bed
bathrooms
1 Bath
square feet
672 ft²
$390,000 -1.27%
08/22/2025
Janet Leap
RE/MAX of Boulder, Inc
20250608 Unit 503
06/08/2025
503
1 Bed
1 Bath
672 ft²
$500,000
bedrooms
1 Bed
bathrooms
1 Bath
square feet
672 ft²
-
-
Meghan O'Quinn
HomeSmart Realty
20250607 Unit 704
06/07/2025
704
1 Bed
1 Bath
720 ft²
$395,000
bedrooms
1 Bed
bathrooms
1 Bath
square feet
720 ft²
$378,000 -4.30%
07/28/2025
Janet Leap
RE/MAX of Boulder, Inc
20250529 Unit 201
05/29/2025
201
1 Bed
-
728 ft²
$425,000
bedrooms
1 Bed
bathrooms
-
square feet
728 ft²
$400,000 -5.88%
06/16/2025
Katie Robinson
RE/MAX Alliance
20250529 Unit 203
05/29/2025
203
1 Bed
1 Bath
672 ft²
$375,000
bedrooms
1 Bed
bathrooms
1 Bath
square feet
672 ft²
-
-
Rene Vellinga
RE/MAX Alliance-Boulder
20240813 Unit 605
08/13/2024
605
2 Bed
1 Bath
995 ft²
$520,000
bedrooms
2 Bed
bathrooms
1 Bath
square feet
995 ft²
$580,000 +11.54%
09/16/2024
Mark Bosley
RE/MAX Alliance-Boulder
20240127 Unit 503
01/27/2024
503
1 Bed
1 Bath
672 ft²
$400,000
bedrooms
1 Bed
bathrooms
1 Bath
square feet
672 ft²
$375,000 -6.25%
03/15/2024
Thomas Precourt
RE/MAX Alliance on Walnut
20220203 Unit 303
02/03/2022
303
1 Bed
1 Bath
672 ft²
$395,000
bedrooms
1 Bed
bathrooms
1 Bath
square feet
672 ft²
$405,000 +2.53%
03/15/2022
Jillian Fowler
The Agency - Boulder
20211129 Unit 501
11/29/2021
501
1 Bed
1 Bath
728 ft²
$375,000
bedrooms
1 Bed
bathrooms
1 Bath
square feet
728 ft²
$367,597 -1.97%
01/04/2022
Jillian Fowler
The Agency - Boulder
20210310 Unit 402
03/10/2021
402
2 Bed
2 Bath
930 ft²
$475,000
bedrooms
2 Bed
bathrooms
2 Bath
square feet
930 ft²
$475,000
08/02/2021
Janet Leap
RE/MAX of Boulder, Inc
20210309 Unit 502
03/09/2021
502
2 Bed
2 Bath
930 ft²
$495,000
bedrooms
2 Bed
bathrooms
2 Bath
square feet
930 ft²
$490,000 -1.01%
05/10/2021
Marybeth Emerson
The Agency - Boulder
20190415 Unit 205
04/15/2019
205
2 Bed
2 Bath
995 ft²
$489,900
bedrooms
2 Bed
bathrooms
2 Bath
square feet
995 ft²
-
-
-
20190419 Unit 101
04/19/2019
101
1 Bed
1 Bath
571 ft²
$320,000
bedrooms
1 Bed
bathrooms
1 Bath
square feet
571 ft²
-
-
-
20181127 Unit 404
11/27/2018
404
1 Bed
1 Bath
720 ft²
$310,000
bedrooms
1 Bed
bathrooms
1 Bath
square feet
720 ft²
-
-
-
20180114 Unit 304
01/14/2018
304
1 Bed
1 Bath
720 ft²
$305,000
bedrooms
1 Bed
bathrooms
1 Bath
square feet
720 ft²
$298,500 -2.13%
03/30/2018
Jerry Malia
Century 21 Bear Facts Realty
20170607 Unit 102
06/07/2017
102
2 Bed
2 Bath
860 ft²
$374,900
bedrooms
2 Bed
bathrooms
2 Bath
square feet
860 ft²
$389,000 +3.76%
07/18/2017
Martin Mata
Redfin Corporation
20170418 Unit 201
04/18/2017
201
1 Bed
1 Bath
728 ft²
$300,000
bedrooms
1 Bed
bathrooms
1 Bath
square feet
728 ft²
$305,000 +1.67%
05/12/2017
Kelly Moye
Compass - Denver
20160518 Unit 401
05/18/2016
401
1 Bed
1 Bath
728 ft²
$279,900
bedrooms
1 Bed
bathrooms
1 Bath
square feet
728 ft²
$295,000 +5.39%
06/08/2016
Brad Klein
8z Real Estate
20160324 Unit 705
03/24/2016
705
2 Bed
2 Bath
995 ft²
$365,000
bedrooms
2 Bed
bathrooms
2 Bath
square feet
995 ft²
$425,000 +16.44%
04/11/2016
Sibyl Liedtke
milehimodern - Boulder
20140409 Unit 105
04/09/2014
105
2 Bed
2 Bath
962 ft²
$269,000
bedrooms
2 Bed
bathrooms
2 Bath
square feet
962 ft²
$250,000 -7.06%
08/20/2014
John McElveen
milehimodern - Boulder
20130514 Unit 202
05/14/2013
202
2 Bed
2 Bath
930 ft²
$250,000
bedrooms
2 Bed
bathrooms
2 Bath
square feet
930 ft²
$245,000 -2.00%
03/26/2014
Sue Iten
MB/Iten Realty Inc.
20130409 Unit 502
04/09/2013
502
2 Bed
2 Bath
930 ft²
$299,900
bedrooms
2 Bed
bathrooms
2 Bath
square feet
930 ft²
$285,000 -4.97%
08/28/2013
Joel Ripmaster
Madison & Company Properties - Boulder

Building Info

850 20th 850 20th, Boulder, CO 80302
  • 1 Unit for Sale
More about this Building
850 20th
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