3121 3rd St, Boulder, CO 80304
OFF MARKET

3121 3rd St
Boulder, CO 80304

  • 4 Beds
  • 2 Baths
  • 2,183 sqft

$1,946,400

Trulia Estimate
as of Aug 13, 2026
Est. Refi. Payment $10,900/mo*
Refinance Your Home

$1,946,400

Trulia Estimate
as of Aug 13, 2026
Est. Refi. Payment $10,900/mo*
Refinance Your Home
4 Beds
2 Baths
2,183 sqft

Home Value

Trulia Estimate
$1.95M
Since last month
Decreased$58K (-2.9%)
Since last year
Decreased$115K (-5.6%)
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 +24% in the last 10 years
MonthEstimated value
2026
August 2026$1.95M
July 2026$1.93M
June 2026$2.01M
May 2026$2M
April 2026$2.01M
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
300 Forest Ave, Boulder, CO
0.07
Single-Family Home
$1,583,000
06/11/26
3
2
2,080
3242 4th Street, Boulder, CO
0.16
Single-Family Home
$1,550,000
08/14/25
3
2
2,274
3150 5th Street, Boulder, CO
0.16
Single-Family Home
$1,000,000
04/20/26
3
2
1,836
315 Evergreen Ave, Boulder, CO
0.05
Single-Family Home
$1,620,000
07/22/26
3
3
2,538
3133 5th St, Boulder, CO
0.13
Single-Family Home
$2,215,000
08/05/26
3
2
2,104
3075 5th St, Boulder, CO
0.15
Single-Family Home
$995,000
03/11/26
3
2
1,291
485 Grape Ave, Boulder, CO
0.23
Single-Family Home
$1,575,000
10/17/25
3
2.5
2,088
675 Dellwood Ave, Boulder, CO
0.29
Single-Family Home
$1,835,000
06/05/26
4
3
2,558
3056 8th Street, Boulder, CO
0.36
Single-Family Home
$2,000,000
04/30/26
4
2
2,697
680 Grape Ave, Boulder, CO
0.29
Single-Family Home
$1,100,000
10/06/25
5
3
1,708

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
300 Forest Ave, Boulder, CO 80304
0.07
$1,583,000
3
2
2,080
Recently Sold
315 Evergreen Ave, Boulder, CO 80304
0.05
$1,620,000
3
3
2,538
Recently Sold
3131 4th St, Boulder, CO 80304
0.06
$1,717,300
3
2
1,854
Off Market
3133 5th St, Boulder, CO 80304
0.13
$2,215,000
3
2
2,104
Recently Sold
3033 3rd St, Boulder, CO 80304
0.11
$1,995,000
-
-
-
For Sale
3242 4th Street, Boulder, CO 80304
0.16
$1,527,500
3
2
2,274
Off Market
3150 5th Street, Boulder, CO 80304
0.16
$1,000,000
3
2
1,836
Recently Sold
3075 5th St, Boulder, CO 80304
0.15
$995,000
3
2
1,291
Recently Sold
3132 5th St, Boulder, CO 80304
0.16
$3,991,600
5
5
6,215
Off Market
3182 5th St, Boulder, CO 80304
0.17
$4,649,400
4
3.5
4,656
Off Market
3015 3rd St, Boulder, CO 80304
0.16
$4,250,000
6
8.5
9,667
Recently Sold
3151 6th St, Boulder, CO 80304
0.19
$2,290,800
6
4.5
4,801
Off Market

Local Information

  • Map ViewExplore the area around 3121 3rd St.
-- mins to
Commute Destination

Home Highlights

Property Type
Single-Family Home
Year Built
1985
Living Area
2,183 sqft
Price/Sqft
$892
Parking
Garage

About this House

This single-family home is located at 3121 3rd St, Boulder, CO. 3121 3rd St is in Boulder, CO and in ZIP code 80304. This property has 4 bedrooms, 2 bathrooms and approximately 2,183 sqft of floor space. This property has a lot size of 7243 sqft and was built in 1985.
3121 3rd St, Boulder, CO 80304 is a 4 bedroom, 2 bathroom, 2,183 sqft single-family home built in 1985. It is currently off market. The Trulia Estimate is $1,946,400, with a rent estimate of $4,692/month.

Home Details for 3121 3rd St

Interior Features

Interior Details
BasementNumber of Rooms: 8
Heating & Cooling
Heating: Other, OtherHeating Fuel: Other

Exterior Features

Exterior Home Features
Roof: AsphaltDeckExterior: Wood
Parking & Garage
GarageParking: Garage Attached

Property Information

Year Built
Year Built: 1985Year Updated: 1990
Property Type / Style
Property Type: Single Family HomeArchitecture: split level

Community

Units in Building: 1

Lot Information

Lot Area: 7243 sqft

Price and Tax history

YearProperty taxTax assessment
2025
$13,720
$2,331,500
Home facts updated by county records

Market trends in Boulder

Last updated July 2026
Buyer'sMarketSeller'sMarket
Avg. sale price
$897K
$10.37KMoM
Sale-to-List Price
98.4%
0.1%MoM
Price per sq ft
$499
$4MoM
Available listings
760
19MoM
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Around this home

What Locals Say about Boulder

At least 538 Trulia users voted on each feature.

  • 94 % Say it's dog friendly

  • 90 % Say there are sidewalks

  • 81 % Say people would walk alone at night

  • 81 % Say parking is easy

  • 75 % Say there's wildlife

  • 72 % Say it's walkable to restaurants

  • 71 % Say it's walkable to grocery stores

  • 67 % Say there's holiday spirit

  • 65 % Say yards are well-kept

  • 64 % Say it's quiet

  • 61 % Say kids play outside

  • 59 % Say neighbors are friendly

  • 58 % Say car is needed

  • 53 % Say streets are well-lit

  • 51 % Say they plan to stay for at least 5 years

  • 39 % Say there are community events

Sourced by Trulia users. Learn more about our methodology.
  • Trulia User
    "I work in Berthod Colorado, which is a thirty minute commute. The views are stunning. So much of the great outdoors are preserved here. It’s truly magical. At the same time, there is a bus stop right next to my house that would be handy if I worked in town in Boulder. "
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  • Nancypautsch
    "This is a dog friendly neighborhood. Several neighbors have dogs that they walk which is fun to see. We don’t presently have dogs, but we always had one to two dogs with our three kids as they were growing up. Pets definitely are park of a neighborhood community. "
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  • Trulia User
    "There’s the Boulder Creek festival, which is all right.. otherwise the neighbors really just keep to themselves"
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  • Hwilliams3421
    "I like how we’re all living in separate spaces but we have a communal bond through out the neighborhood. I like how all the dogs are nice and friendly too. "
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  • Megan La Grave
    "Fantastic neighborhood for all ages and pets! Come walk it sometime and see for yourself. Close to the trails "
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  • Spencer House
    "This neighborhood is very private and secure. The location is convenient with access to the university, Hospital and many other business. It also supports many bike trails."
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  • Sage M
    "My commute is quiet - I walk to work most of the year. Cars are not always mindful of pedestrians, but traffic is low and I only rarely have had issues in the last four years. "
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  • Michelle Lee
    "We have an antique car show on the block once a month during the summer. We are in walking distance to all the events on Pearl Street."
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  • Siera.kennedy2226
    "The only way I could do that was if you wanted me too I could come and pick it out and then I can go pick up it from your place or you could just pick me out of there "
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  • J
    "An insulated community. Seemingly progressive but lacking in generosity and very elitist. Good schools if all you care about is academic learning."
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  • Charnelle Setser
    "Make sure you have a mud room to be able to wash your dogs cu they going to get dirty here but it’s absolutely gorgeous "
    1
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  • RG
    "There are not many children friendly directly in the area but there is several parks wearily within walking distance. "
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  • Trulia User
    "Yes I live it hfff everyone is different and it’s just not the i yoi and the i but the people that I love are my "
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  • Trulia User
    "pretty easy to get around, there's multiple bus transits nearby. pretty easy to catch a bus. its close to the bus station, so when you get on board it's usually empty. great seat priority."
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  • Trulia User
    "Halloween is crazy busy with tons of kids! Meet friends when walking around wonderland lake. Used to spend lots of time at the pool and tennis courts"
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  • Trulia User
    "Public transportation is very convenient, my car needs too much work so I am not driving it now. I actually live in Dakota Ridge and used to live on Promontory Ct and Utica Ave, been living in N Boulder for almost 30 years!"
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  • Trulia User
    "We have Wonderland Lake and the trails and lots of privacy and wildlife. Small town feel with Lucky’s Market & Bakery, Logan’s, China Gourmet and Dagabi Cucina where we see and chat with our neighbors. "
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  • Trulia User
    "There are great access to public transportation and lots of paths are maintained for biking or for walking"
    0
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  • Trulia User
    "On the bus line, easy commute! Walk to Table Mesa Shopping Center, King Soopers, Whole Foods, near NCAR, bike to CU."
    0
    Flag
  • Trulia User
    "I’ve lived in Dakota Ridge for 20 years and I love it here. We have a strong and fun dog owner community! We look out for one another😊"
    1
    Flag
  • Trulia User
    "I bike to campus in 20 minutes and it’s great besides the traffic and gas fumes from cars which sucks transit is very good here, bus stops all up and down Broadway."
    0
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  • Trulia User
    "Great people and fun when the dogs get to play and we talk! So many wonderful people, places to walk to and eat, get coffee,…I’ve lived in the townhomes for 20 years now!"
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  • Trulia User
    "Lots of open space and dog parks. I take my dog walking there all the time. Great place to meet people and other dog owners and for dogs to play."
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  • Trulia User
    "Quiet and family friendly. Good hiking, only thing is prices are starting to go up like crazy so that’s unfortunate "
    0
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  • Trulia User
    "We have neighborhood concerts/block parties. Really great way to connect and hear live music. We also have Farm to Bus, which is a farmer's market on a bus. They have fresh eggs and bread, as well as locally grown honey. There's a park nearby which is a great place to exercise abd chat with other neighbors."
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  • Trulia User
    "this area is close to campus so there are a lot of college students. that being said, there are also a lot of families as well (it's a mix) and I have found the neighborhood to be very kind and reasonable (i.e. no late and loud partying). everyone I've interacted with has been respectful."
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  • Trulia User
    "Dogs are happy and can be greeted with their owners while walking in the neighborhood. Close to parks and trails for running and walking."
    0
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  • Trulia User
    "Quiet and close to the mountains. Great schools. Good shopping nearby. Houses with yards. Nice people."
    1
    Flag
  • Trulia User
    "There are lots of kids in the neighborhood, the supermarket is so close to pick up last minute groceries- a great bakery, coffee shop, Lucky’s of course. The foothills trail is awesome to walk, walk dogs, and play by the lake. And the pool and tennis courts are so much fun!"
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  • Trulia User
    "Easy to walk on the streets and hiking areas- there is nothing not to like in the Mapleton area- boulder creek is close by so dogs can go swimming too"
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  • Trulia User
    "Central to everything and great hiking nearby but also noisy, rude college kids. Lots of illegally off leash dogs. "
    1
    Flag
  • Trulia User
    "Lots of dogs around. People are generally respectful of other dogs and keep them on leash. Lots of off-leash trails nearby."
    0
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  • Trulia User
    "It seems as if most people own dogs . Very dog friendly . Dogs always seem well trained . Dogs also seem very friendly . "
    1
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  • Trulia User
    "Lovely quiet neighborhood - people are friendly and there is plenty of space to be active. Only 10-15 minutes from trailheads. "
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  • Trulia User
    "I have lived in North Boulder for 30 years- Wonderland Hills and Dakota Ridge, it has always felt safe here. My children attended Boulder Public Schools, I give the schools an A+! We live a convenient short distance to restaurants, grocery stores, schools, and shopping, ...friends hang out at our house and tell me I’m a great baker of Chocolate Chip Cookies! I love to send them home with cookies or fresh dough to bake cookies with their own families! You should bring your kids to our house on Halloween, what a treat! I walk to Pearl Street by way of Foothills Trail, through beautiful neighborhoods apple orchards, Mt. Sanitas and am fascinated by the rock formations. I bicycle many days a week and many miles, such a perfect location to start from and end up! It’s a family and friends tradition to do the Bolder Boulder on the Monday of Memorial Day weekend, so fun! I have been taking it easy for a while due to some physical injuries, but continue to build up my strength and stamina walking my dog, climbing and hiking - I get a great workout! Here’s a tidbit! Keep your dog on leash and clean u"
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  • Trulia User
    "The neighborhood is Nice for kids. Would recommend it to families and it is no less safe than other neighborhoods in Boulder. "
    2
    Flag
  • Lee24seven
    "We just moved into the area. We love the peace and quiet of our neighborhood. The surrounding area is open space perfect for hiking. "
    5
    Flag
  • Roguengineer
    "private neighborhood surrounded by open space! convenient to groceries, coffee house, and neighborhood restaurants. great schools, too!"
    1
    Flag
  • Lexi V.
    "It’s not the worst place to live but not ideal if you want peace and quiet. Also tons of dogs out being walked on a regular basis. Ge"
    6
    Flag
  • Strike3
    "Amazing neighborhood in great location. Great for families. Walkable to most things including downtown. We love it."
    2
    Flag

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Homes for sale near 3121 3rd St

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Off Market Homes Near 3121 3rd St

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Frequently asked questions about 3121 3rd St

  • What is 3121 3rd St estimated to be worth?
    Trulia's estimated value for 3121 3rd St in Boulder, CO is $1,946,400.
  • Is Boulder a buyer's or seller's market?
    Boulder is currently a balanced market, based on recent for-sale activity.
  • What's the median sale price in Boulder?
    The median sale price in Boulder is $897K. That is up $10.37K from the prior month.
  • What do residents say about Boulder?
    Residents describe Boulder, CO as dog-friendly, pedestrian-friendly, and easy to park in. See recently sold homes in Boulder, CO.
  • How big is the lot at 3121 3rd St?
    The lot at 3121 3rd St in Boulder, CO is about 0.17 acres (7,243 sq ft).
  • Does 3121 3rd St have a garage?
    Yes, 3121 3rd St in Boulder, CO has a garage.