Marcus & Millichap is pleased to present 316 21st Ave, a four-unit investment opportunity in Longmont, CO. The property consists of four spacious 2-bedroom units, each equipped with in-unit washer and dryer and attached garages, making it an ideal fit for both an owner-user or an investor seeking a long-term, value-add asset. With garage parking and below-market rents, the property offers clear and immediate avenues for income growth.
Situated near Horizon Park, a vibrant retail center anchored by King Soopers alongside co-tenants such as Dollar Tree, Planet Fitness, and Big Lots, 316 21st Ave benefits from strong local consumer traffic and convenience.
Additionally, Longmont’s labor market remains robust, supported by expanding sectors such as retail, advanced manufacturing, and professional services, and major employers including Seagate and UC Health, further strengthening the property’s investment profile.
For sale
$750,000
316 21st Avenue, Longmont, CO 80501
8beds
4baths
3,400sqft
:
Get pre-qualified$4,238/mo
Quadruplex
Built in 1978
-- sqft lot
$724,900 Zestimate®
$221/sqft
$-- HOA
What's special
Garage parkingIn-unit washer and dryerAttached garages
- 64 days |
- 180 |
- 13 |
Zillow last checked:
Listing updated:
Listed by:
Charles Burkhart 214-336-6064 charles.burkhart@marcusmillichap.com,
Marcus & Millichap Real Estate Investment Services of Atlanta, Inc.
Source: REcolorado as distributed by MLS GRID,MLS#: 6098762
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 8
- Bathrooms: 4
Heating
- Baseboard
Cooling
- Has cooling: Yes
Features
- Has basement: No
Interior area
- Total structure area: 3,400
- Total interior livable area: 3,400 sqft
- Finished area above ground: 3,400
Property
Parking
- Total spaces: 1
- Parking features: Garage - Attached
- Attached garage spaces: 1
Features
- Levels: One
- Stories: 1
Details
- Parcel number: R0074712
- Special conditions: Standard
Construction
Type & style
- Home type: MultiFamily
- Property subtype: Quadruplex
Materials
- Frame
- Roof: Composition
Condition
- Year built: 1978
Utilities & green energy
- Sewer: Public Sewer
Community & HOA
Community
- Subdivision: Western Meadows
HOA
- Has HOA: No
Location
- Region: Longmont
Financial & listing details
- Price per square foot: $221/sqft
- Tax assessed value: $940,900
- Annual tax amount: $6,173
- Date on market: 5/29/2026
- Listing terms: Cash,Conventional,Other
- Ownership: Individual
Estimated market value
$724,900
$689,000 - $761,000
$1,591/mo
Price history
| Date | Event | Price |
|---|---|---|
| 5/29/2026 | Listed for sale | $750,000+158.6%$221/sqft |
Source:  REcolorado as distributed by MLS GRID #6098762 Report a problem | ||
| 2/15/2008 | Sold | $290,000-24.7%$85/sqft |
Source: Public Record Report a problem | ||
| 5/13/2005 | Sold | $385,000+56.2%$113/sqft |
Source: Public Record Report a problem | ||
| 2/2/1998 | Sold | $246,500$73/sqft |
Source: Public Record Report a problem | ||
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2025 | $6,160 +1.4% | $58,807 -14.9% |
| 2024 | $6,076 +52.3% | $69,101 +0.5% |
| 2023 | $3,990 -3.4% | $68,746 +70.5% |
| 2022 | $4,131 -14.9% | $40,324 -4.9% |
| 2021 | $4,855 | $42,400 -15.2% |
| 2020 | $4,855 +39.7% | $49,979 |
| 2019 | $3,474 | $49,979 +36.6% |
| 2018 | $3,474 | $36,576 -9.5% |
| 2017 | $3,474 +10% | $40,437 +22.4% |
| 2016 | $3,159 +4.9% | $33,050 +42.7% |
| 2015 | $3,010 +39.2% | $23,155 |
| 2014 | $2,163 -4.4% | $23,155 |
| 2013 | $2,262 +6.8% | $23,155 -5.1% |
| 2012 | $2,119 -9.2% | $24,393 |
| 2011 | $2,333 +1.8% | -- |
| 2010 | $2,291 +0.7% | $27,100 |
| 2009 | $2,275 +3.3% | $27,100 -19.8% |
| 2008 | $2,202 -6.4% | $33,810 |
| 2007 | $2,352 -1.8% | $33,810 -6% |
| 2006 | $2,394 +13.1% | $35,980 |
| 2005 | $2,118 +1.2% | $35,980 +12.4% |
| 2004 | $2,093 -5.7% | $32,020 |
| 2003 | $2,219 +10.5% | $32,020 |
| 2002 | $2,007 | -- |
| 2001 | -- | $320,000 |
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: Lanyon
Nearby schools
GreatSchools rating
- 4/10Timberline Pk-8Grades: PK-8Distance: 1.2 mi
- 3/10Skyline High SchoolGrades: 9-12Distance: 1.3 mi
Schools provided by the listing agent
- Elementary: Longmont Estates
- Middle: Erie
- High: Longmont
- District: St. Vrain Valley RE-1J
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.
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