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.
For sale
$375,000
850 20th Street #404, Boulder, CO 80302
1beds
720sqft
Condominium
Built in 1967
-- sqft lot
$-- Zestimate®
$521/sqft
$559/mo HOA
What's special
- 42 days
- 110
- 4
Zillow last checked:
Listing updated:
Listed by:
Hallie Rand 720-810-2931,
Coldwell Banker Realty 24
Source: REcolorado as distributed by MLS GRID,MLS#: 1584266
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 1
- Bathrooms: 1
- Full bathrooms: 1
- Main level bathrooms: 1
- Main level bedrooms: 1
Bedroom
- Level: Main
Bathroom
- Level: Main
Heating
- Baseboard
Cooling
- Air Conditioning-Room
Appliances
- Included: Convection Oven, Cooktop, Refrigerator
Features
- Has basement: No
- Common walls with other units/homes: End Unit
Interior area
- Total structure area: 720
- Total interior livable area: 720 sqft
- Finished area above ground: 720
Video & virtual tour
Property
Parking
- Total spaces: 1
- Details: Reserved Spaces: 1
Features
- Levels: One
- Stories: 1
- Exterior features: Balcony
Details
- Parcel number: R0083147
- Special conditions: Standard
Construction
Type & style
- Home type: Condo
- Property subtype: Condominium
- Attached to another structure: Yes
Materials
- Brick
- Roof: Other
Condition
- Year built: 1967
Utilities & green energy
- Sewer: Public Sewer
Community & HOA
Community
- Security: 24 Hour Security, Key Card Entry, Security Entrance
- Subdivision: San Marco North Condominiums
HOA
- Has HOA: Yes
- Amenities included: Elevator(s), Laundry, Storage
- Services included: Reserve Fund, Heat, Maintenance Structure, Security, Sewer, Trash, Water
- HOA fee: $559 monthly
- HOA name: San Marco North HOA
- HOA phone: 303-818-2407
Location
- Region: Boulder
Financial & listing details
- Price per square foot: $521/sqft
- Tax assessed value: $415,700
- Annual tax amount: $2,558
- Date on market: 9/15/2026
- Listing terms: Cash,Conventional
- Exclusions: None
- Ownership: Individual
Estimated market value
Not available
Estimated sales range
Not available
Not available
Price history
| Date | Event | Price |
|---|---|---|
| 9/15/2026 | Listed for sale | $375,000+19%$521/sqft |
Source: | ||
| 1/16/2019 | Sold | $315,000+1.6%$438/sqft |
Source: | ||
| 11/30/2018 | Pending sale | $310,000$431/sqft |
Source: WK Real Estate #867464 Report a problem | ||
| 11/27/2018 | Listed for sale | $310,000$431/sqft |
Source: WK Real Estate #5632457 Report a problem | ||
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2025 | $2,145 +1.9% | $25,981 -4.5% |
| 2024 | $2,106 -1.6% | $27,199 -1% |
| 2023 | $2,140 +4.7% | $27,463 +23.5% |
| 2022 | $2,044 +4.4% | $22,240 -13.1% |
| 2021 | $1,958 | $25,590 +13.8% |
| 2020 | $1,958 +9.7% | $22,494 |
| 2019 | $1,785 | $22,494 +9.3% |
| 2018 | $1,785 | $20,585 -9.5% |
| 2017 | $1,785 +42.5% | $22,758 +57.3% |
| 2016 | $1,253 +5.6% | $14,471 -11.3% |
| 2015 | $1,186 -13.5% | $16,318 |
| 2014 | $1,372 +12.1% | $16,318 |
| 2013 | $1,224 +0.9% | $16,318 +11.7% |
| 2012 | $1,213 -0.6% | $14,607 |
| 2011 | $1,220 +7.1% | -- |
| 2010 | $1,139 +4% | $15,090 |
| 2009 | $1,095 +3.5% | $15,090 -11.9% |
| 2008 | $1,058 +5.9% | $17,120 |
| 2007 | $999 +3.6% | $17,120 +9.5% |
| 2006 | $964 +15% | $15,640 |
| 2005 | $839 +0.7% | $15,640 +14% |
| 2004 | $833 +1.4% | $13,720 -15.4% |
| 2003 | $821 +10.3% | $16,210 +37.6% |
| 2002 | $744 | $11,780 -90.8% |
| 2001 | -- | $128,700 |
Find assessor info on the county website
Monthly payment
Est. payment
Payment breakdown
Explore the cost of this home by adjusting the details. Changes won't be saved.Climate risks
Neighborhood: University Hill
Nearby schools
Schools provided by the listing agent
- Elementary: Flatirons
- Middle: Manhattan
- High: Boulder
- District: Boulder Valley RE 2
Source: REcolorado as distributed by MLS GRID. This data may not be complete. We recommend contacting the local school district to confirm school assignments for this home.







