3991 E 121st Avenue, Thornton, CO 80241
Property image
Property image
FOR SALE

$1,400,000

Original price: $1,950,000
  • 2 Beds
  • 2 Baths
  • 1,884 sqft

3991 E 121st Avenue, Thornton, CO 80241

Est. Mortgage $8,230/mo*
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Home Highlights

Parking
1 Car Garage
Outdoor
Deck
HOA
$245/Monthly
Price/Sqft
$743
Climate Control
Forced Air & Central Air
Listed
180+ days ago

Local Information

  • Map ViewExplore the area around 3991 E 121st Avenue.
  • Schools1 Elementary School1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

About this House

Prime 4-Unit Townhome Investment Opportunity

Multifamily gem in the heart of Thornton! These well-maintained 4-units within the Thornton Ridge townhome complex offers a balanced mix of spacious layouts and strong rental performance, ideal for both seasoned investors and newcomers seeking reliable cash flow.

Property Breakdown:
2 units: 2 bed / 1.5 bath
2 units: 3 bed / 2 bath
Current rents: $2,100-$2,400 per month
Cap rate: 5-6%, with potential upside through light updates and rent optimization
Strong rental history: Consistent occupancy and long-term tenants. Seller can provide full rental history and detailed income documentation

Each home features comfortable living spaces, well maintained finishes in varying levels of updates, and private outdoor areas.

Whether you’re looking to expand your portfolio or enter the Denver metro multifamily market, this portfolio offers immediate cash flow, proven stability, and future growth potential.

Current Rents: $2,100-$2,400/month
Cap Rate: 5-6%
Financials: Full rent roll and income verification available upon request
Last check for updates: about 21 hours ago
Listing courtesy of Kayla Schmitz, (303) 249-4118
Compass - Denver
Source: REcolorado as distributed by MLS GRID, MLS#4732768
Also Listed on REcolorado as distributed by MLS GRID.

Home Details for 3991 E 121st Avenue

Interior Features

Interior Details
Basement: Unfinished
Beds & Baths
Number of Bedrooms: 2Number of Bathrooms: 2
Dimensions and Layout
Living Area: 1884 Square Feet
Appliances & Utilities
Laundry: In Unit
Heating & Cooling
Heating: Forced AirHas CoolingAir Conditioning: Central AirHas HeatingHeating Fuel: Forced Air
Windows, Doors, Floors & Walls
Common Walls: 2+ Common Walls
Levels, Entrance, & Accessibility
Stories: 2Levels: Two
View
No View

Exterior Features

Exterior Home Features
Roof: CompositionPatio / Porch: Deck
Parking & Garage
Number of Garage Spaces: 1Number of Covered Spaces: 1Has a GarageHas an Attached GarageParking Spaces: 1Parking: Garage Attached
Frontage
Not on Waterfront
Water & Sewer
Sewer: Public Sewer
Finished Area
Finished Area (above surface): 1244 Square Feet

Days on Market

Days on Market: 180+

Property Information

Year Built
Year Built: 1997
Property Type / Style
Property Type: Residential IncomeProperty Subtype: QuadruplexStructure Type: QuadruplexArchitecture: Quadruplex
Building
Construction Materials: FrameAttached To Another Structure
Property Information
Not Included in Sale: Tenant And Seller Personal PropertyParcel Number: R0026161

Price & Status

Price
List Price: $1,400,000Price Per Sqft: $743

Active Status

MLS Status: Active

Location

Direction & Address
City: ThorntonCommunity: Thornton Ridge Filing
School Information
Elementary School: StellarElementary School District: Adams 12 5 Star SchlJr High / Middle School: CenturyJr High / Middle School District: Adams 12 5 Star SchlHigh School: Mountain RangeHigh School District: Adams 12 5 Star Schl

Agent Information

Listing Agent
Listing ID: 4732768

Building

Building Area
Building Area: 1884 Square Feet

Community

Not Senior Community

HOA

HOA Name: Thornton Ridge TownhomesHOA Phone: 970-481-9574Has an HOAHOA Fee: $245/Monthly

Listing Info

Special Conditions: Standard

Offer

Listing Terms: 1031 Exchange, Cash, Other

Mobile R/V

Mobile Home Park
Mobile Home Units: Feet

Business

Business Information
Ownership: Corporation/Trust

Rental Terms, Policies & Fees

Owner Pays: Association Fees

Miscellaneous

BasementMls Number: 4732768Attribution Contact: kayla.schmitz@compass.com, 303-249-4118Above Grade Unfinished Area: 1244Below Grade Unfinished Area: 640Showing Service Name: None

Around this home

View nearby schools on GreatSchools
The GreatSchools Rating compares schools on a variety of school quality indicators including test scores, college readiness, equity and more. Learn more.

What Locals Say about Thornton

At least 719 Trulia users voted on each feature.

  • 91 % Say there are sidewalks

  • 89 % Say it's dog friendly

  • 85 % Say car is needed

  • 80 % Say parking is easy

  • 74 % Say kids play outside

  • 73 % Say yards are well-kept

  • 73 % Say there's holiday spirit

  • 67 % Say streets are well-lit

  • 61 % Say it's quiet

  • 58 % Say people would walk alone at night

  • 55 % Say there's wildlife

  • 54 % Say it's walkable to grocery stores

  • 50 % Say neighbors are friendly

  • 50 % Say they plan to stay for at least 5 years

  • 43 % Say it's walkable to restaurants

  • 28 % Say there are community events

Sourced by Trulia users. Learn more about our methodology.
  • Trulia User
    "Plenty of places to take your dog for a walk"
    0
    Flag
  • Jessica Johnson
    "Not to many people are smart with their dogs. Thinking they can be off lease when they can’t. Just beware"
    0
    Flag
  • Tammy Ralston
    "Very well maintained areas nice parks with playgrounds as well as open spaces. We live in a newer part of Thornton so food is a little farther away but in about 10-15min you’re on the 25 then you can head anywhere."
    0
    Flag
  • Antonio Gonzalez
    "I drive to Aurora near Buckley for work, it takes about an hour. Freeway use is the only way to get anywhere out of Thornton quickly."
    0
    Flag
  • Hooligancats
    "There are lots of friendly dogs in the area and the owners are super nice. Lots of dog walking too. "
    0
    Flag
  • Trulia User
    "Tree’s neighborhood & people the stores around us , the amount of places u can go to & the amount of food selections u can choose from is great lots of Mexican and mix of other types of restaurants!"
    0
    Flag
  • Sarah Vargas
    "Dog owners would like the way people treat the dogs and the way dogs treat the people in this neighborhood "
    0
    Flag
  • Miguel Gutierrez
    "Happy to live in Thornton great friends and great neighbors. Great with the ROI over the years. I recommend it"
    0
    Flag
  • Jason.barrios
    "Elementary and middle schools are right in the neighborhood. A golf course runs through the neighborhood and is a municipal course."
    0
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  • Lariza.cantu
    "I love my neighborhood. Thornton as a city does a really good job at holding community events that help develop a sense of community and pride."
    0
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  • Jnburg17
    "I really don’t like the area. Lots of crime and it’s very uncomfortable. There are some nice parks in the area that are nice but you have to watch your back at all times. "
    0
    Flag
  • Jnburg17
    "So much crime! It’s so hard to feel safe or that your property is safe. It will be a blessing when we are able to get out of this city or state!"
    0
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  • Danafarnham
    "The neighborhood is unique because of the birds that inhabit it. We have owls and bald eagles. We often get the Eastlake turkeys that pay a visit. "
    0
    Flag
  • Anchandra14
    "Annual community gathering, safe area, not crowded, good neighborhood, good libraries, good school, near hospital."
    0
    Flag
  • Trulia User
    "It’s a great quiet culdesac. We enjoy our neighbors and the paths to walk on with our pets. Packages are safe "
    1
    Flag
  • Betsyjoy
    "Thornton Winter Fest at recreation center at 112th and Colorado Blvd. Adams County Fairgrounds 4th of July fireworks."
    0
    Flag
  • Jason.barrios
    "Long to get to Tech center on south side of city. Commute to downtown is 15 minutes. Commute in north is easy."
    4
    Flag
  • Purplegirls_3
    "i drive my car everywhere and lots of convenient shopping malls around the neighborhood. Easy access to 470 and 1-25 also back roads if not wanting to use the tolls. great community! "
    0
    Flag
  • Dawnnicastro
    "People are friendly, and it’s a safe place to live. People are out walking their dogs a lot. It’s relatively quiet and pretty peaceful around here. Streets are well lit, and sidewalks/roads are in good shape."
    0
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  • Baylion22
    "It’s quiet regardless of how many cars there are it’s peaceful, no loud music just crickets and birds. It’s as if the entire neighborhood is problay full of elderly hence why there are no loud noises not even at night. You may hear a car burn out if your outside from afar but that’s bout it. I see no other reason not to live here. I haven’t heard of any robins or killings in the area or gunshots, and no people using illegal drugs either."
    0
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  • Lluvia L. D.
    "Any breed is welcome, it’s very much a dog loving neighborhood. Always see dogs walking, most people pick up after their dogs"
    1
    Flag
  • Shalon R.
    " I love how close I am to multiple malls, stores, shopping center etc . Thornton is close to boulder for a easy hike and Denver for a night downtown . "
    0
    Flag
  • Sarah S.
    "Lots of places to roam. Good area. Fun for family and pets. Northglenn is great as well. Adcbhyggkoifd"
    0
    Flag
  • Vanessa R.
    "Is very Quite, family friendly and great neighbors. Lots of trails for entertainment and good local restaurants "
    1
    Flag
  • Jennifer W.
    "Nice, friendly neighborhood. Close to store and restaurant. Several parks in area for kids. Walking distance to schools."
    1
    Flag
  • Yamilet S.
    "Very good and clean quiet area. Very nice people around always quiet in the neighborhood never any bad experiences "
    0
    Flag
  • Doger96
    "Newer, nice but private neighbors. Clean not alot of threw traffic. Nice mix of families and young couples."
    0
    Flag
  • Sandra O.
    "Very safe and well maintained. I am a fan of the neighborhood kids being able to play outside and feel safe doing so. In any case I appreciate and love living in Thornton "
    2
    Flag
  • Kmgriff
    "Very dog friendly. Lots of trails around and good dog parks. The neighborhood has many friendly dogs "
    0
    Flag
  • Vbsierra15
    "Please Watch out for wild animals at dusk. I’ve seen multiple foxes and coyotes in our neighborhood. "
    1
    Flag
  • Ky H.
    "Has great access to public transportation. About 25 minutes to downtown .I-25 traffic could be crazy at times so try to avoid the peak hours ."
    0
    Flag
  • Alfred P.
    "I am 3blocks from I25 @ 120th. This is the easiest spot to start any journey around town. Food of all kinds can be found in the neighborhood."
    0
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  • Dia.boss1313
    "Everyone loves their doggies . As long as you don’t mess with me doggie I won’t mess with chores . Lol :)"
    0
    Flag
  • Krystal K.
    "so far we like it. neighbors are kind and maintain the property, I love the school district and it's a shorter commute to Denver."
    0
    Flag
  • Mercedes
    "A gazillion miles away from anything. There's transit but the routes are awful. The neighbors seem friendly, but are extremely stand off-ish when it comes to newbies in the community. Otherwise it's a cute community. "
    0
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  • Tdrago111
    "Like everywhere else in Colorado. Annoying and slow. so many people coming here and making more traffic. But great if you like to listen to music while you are being slowed down on the road. "
    0
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  • Brina E. D.
    "I'm not that involved in the community to be able to tell you what makes it special. Personally, this part of Thornton is not somewhere I would suggest living. "
    0
    Flag
  • Danny A.
    "Get to know the area around you want to live first. the are good parts and not so good parts. There is a lot of people that move here and like it here."
    0
    Flag
  • Abe B.
    "Trunk or Treat for Halloween. Thornton Fest in early summer. 4th of July fireworks show which is very unique. Pirate Fest in early autumn, at Webster Lake. Numerous Xmas lights all over the place, most notably, what my family has dubbed "The Box House", on Pecos St, just north of 100th. Numerous fireworks shows all over for New Year's. "
    0
    Flag
  • Mattnarielle
    "The neighborhood I live in is not to bad. However if you have kids it’s always best to make sure they are in by 10 since there is some suspicious characters."
    0
    Flag

Market trends in Thornton

Last updated July 2026
Buyer'sMarketSeller'sMarket
Avg. sale price
$509K
$11KMoM
Sale-to-List Price
100.0%
Price per sq ft
$228
$6MoM
Available listings
614
41MoM

Home Value

Trulia Estimate
$1.37M
Since last month
Increased$1M (+293%)
Since last year
Increased$1M (+273.8%)
Learn more about this home's value by checking out its Trulia Estimate, the value of nearby homes, and how much similar homes have sold for.

Trulia Estimate

The of this home's value increased by +506% in the last 10 years
MonthEstimated value
2026
August 2026$1.37M
January 2026$349K
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016

Comparable sales

These are recently sold homes that have a similar location or other similar features to this home, like bedrooms, bathrooms, and square footage. Get a sense of the expected prices in the area by viewing these homes.
Address
Distance
Property Type
Sold Price
Sold Date
Bed
Bath
Sqft
7950 Patricia Drive, Denver, CO
5.71
Multi-Family Home
$540,000
12/22/25
4
2
1,976
8325 Fox Street, Denver, CO
5.57
Multi-Family Home
$725,000
05/11/26
8
4
3,480
6881 E 74th Avenue, Commerce City, CO
6.17
Multi-Family Home
$560,000
03/31/26
5
3
2,420
8660 Lowell Blvd, Westminster, CO
6.62
Multi-Family Home
$743,593
02/19/26
3
2.5
1,720
9023 Perry Street, Westminster, CO
6.52
Multi-Family Home
$675,000
09/25/25
4
3
3,333
9030 Osceola Street, Westminster, CO
6.45
Multi-Family Home
$650,000
05/20/26
6
4
2,504
3812 & 3822 W 89th Way, Westminster, CO
6.47
Multi-Family Home
$670,000
05/29/26
6
4
4,272

Nearby home prices

Get a sense of expected prices in the area by checking the value of nearby homes.
Address
Distance
Price
Bed
Bath
Sqft
Status
3905 E 121st Avenue, Thornton, CO 80241
0.02
$362,900
3
2
1,515
Off Market
3989 E 121st Avenue, Thornton, CO 80241
0.02
$374,000
3
2
1,484
Recently Sold
3937 E 121st Avenue, Thornton, CO 80241
0.03
$379,100
3
2
1,512
Off Market
3869 E 121st Avenue, Thornton, CO 80241
0.06
$394,600
2
1.5
1,756
Off Market
3979 E 121st Avenue, Thornton, CO 80241
0.04
$345,600
2
2
1,484
Off Market
3841 E 121st Avenue, Thornton, CO 80241
0.08
$380,000
3
1.5
1,884
Recently Sold
3837 E 121st Avenue, Thornton, CO 80241
0.08
$370,400
3
2
1,707
Off Market
3821 E 121st Avenue, Thornton, CO 80241
0.10
$379,000
3
2
1,834
Off Market
3793 E 121st Avenue, Thornton, CO 80241
0.10
$381,000
2
1.5
1,614
Off Market
3700 E 122nd Avenue, Thornton, CO 80241
0.10
$442,000
4
2
1,820
Recently Sold
12215 Garfield Place, Thornton, CO 80241
0.17
$490,000
4
2
2,485
Recently Sold

Price and Tax history

DateEventPrice
Jul 30, 2026
Source: REcolorado as distributed by MLS GRID #4732768
PriceChange
$1,400,000
Price decreased by 28%
Mar 18, 2026
Source: REcolorado as distributed by MLS GRID #4732768
PriceChange
$1,950,000
Price decreased by 17%
Feb 11, 2026
Source: REcolorado as distributed by MLS GRID #4732768
Listed For Sale
$2,340,000

LGBTQ Local Legal Protections

Kayla Schmitz, Compass - Denver
Agent Phone: (303) 249-4118
© 2026 REcolorado® All rights reserved. Certain information contained herein is derived from information which is the licensed property of, and copyrighted by, REcolorado®. Some IDX listings have been excluded from this website. Click here for more information

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Frequently asked questions about 3991 E 121st Avenue

  • What is the estimated monthly payment for 3991 E 121st Avenue?
    Based on a $1,400,000 list price with 20% down at today's rates, the estimated monthly payment for 3991 E 121st Avenue in Thornton, CO is approximately $8,185 (about $7,375 principal & interest, $735 property taxes, and $75 homeowner's insurance). This is an estimate. Actual payment depends on your loan terms.
  • How does the list price for 3991 E 121st Avenue compare to homes in Thornton?
    3991 E 121st Avenue in Thornton, CO is listed at $1,400,000, about 175% above the $509K median sale price in Thornton.
  • What do residents say about Thornton?
    Residents describe Thornton, CO as pedestrian-friendly, dog-friendly, and easy to park in. See homes for sale in Thornton, CO.
  • What are the closest schools to 3991 E 121st Avenue?
    The closest schools to 3991 E 121st Avenue in Thornton, CO are Century Middle School (rated 4/10), Mountain Range High School (rated 3/10), Stellar Elementary School (rated 5/10).
  • Does 3991 E 121st Avenue have air conditioning?
    Yes, 3991 E 121st Avenue in Thornton, CO has air conditioning.
  • Does 3991 E 121st Avenue have laundry facilities?
    Yes, 3991 E 121st Avenue in Thornton, CO has laundry facilities.
3991 E 121st Avenue, Thornton, CO 80241 is a 2 bedroom, 2 bathroom, 1,884 sqft multi-family built in 1997. This property is currently available for sale and was listed by REcolorado as distributed by MLS GRID on Feb 11, 2026. The MLS # for this home is MLS# 4732768.