2123 4th St, Boulder, CO 80302
Property image
Property image
OFF MARKET

2123 4th St
Boulder, CO 80302

Mapleton Hill
  • 3 Beds
  • 3 Baths
  • 3,847 sqft (on 0.40 acres)

$4,346,000

Trulia Estimate
as of Aug 23, 2026
Est. Refi. Payment $24,061/mo*
Refinance Your Home

$4,346,000

Trulia Estimate
as of Aug 23, 2026
Est. Refi. Payment $24,061/mo*
Refinance Your Home
3 Beds
3 Baths
3,847 sqft
(on 0.40 acres)

Home Value

Trulia Estimate
$4.35M
Since last month
Increased$13K (+0.3%)
Since last year
Increased$158K (+3.8%)
Since last sale
Increased$342K (+8.5%)
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 +97% in the last 10 years
MonthEstimated value
2026
August 2026$4.34M
July 2026$4.33M
June 2026$4.4M
May 2026$4.35M
April 2026$4.3M
March 2026$4.17M
February 2026$4.07M
January 2026$3.89M
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
2230 Knollwood Dr, Boulder, CO
0.14
Single-Family Home
$3,750,000
07/15/26
4
3
4,046
545 Mapleton Ave, Boulder, CO
0.26
Single-Family Home
$2,225,000
03/23/26
3
3
2,940
615 Spruce St, Boulder, CO
0.21
Single-Family Home
$3,200,000
06/02/26
3
3.5
2,796
563 Arapahoe Ave, Boulder, CO
0.37
Single-Family Home
$3,700,000
12/17/25
4
4
3,317
349 W Arapahoe Ln, Boulder, CO
0.30
Single-Family Home
$2,240,000
04/14/26
3
3.5
3,711
2237 4th St, Boulder, CO
0.10
Single-Family Home
$2,180,000
09/29/25
2
5
4,294
625 Concord Ave, Boulder, CO
0.42
Single-Family Home
$2,700,000
02/25/26
4
3
4,640
320 Pearl St, Boulder, CO
0.17
Single-Family Home
$2,100,000
08/14/26
5
4
3,034
2449 5th St, Boulder, CO
0.28
Single-Family Home
$2,651,475
05/01/26
5
4
3,549
2656 4th St #A, Boulder, CO
0.46
Single-Family Home
$5,850,000
03/10/26
3
3
2,335

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
295 Green Rock Dr, Boulder, CO 80302
0.07
$2,072,700
6
4.5
3,767
Off Market
299 Spruce Ct, Boulder, CO 80302
0.05
$1,777,000
3
2.5
2,144
Recently Sold
2116 Knollwood Dr, Boulder, CO 80302
0.08
$3,005,300
4
3.5
3,348
Off Market
295 Spruce Ct, Boulder, CO 80302
0.06
$1,780,300
3
2.5
2,144
Off Market
287 Spruce Ct, Boulder, CO 80302
0.06
$1,811,700
3
2.5
2,396
Off Market
2135 Knollwood Dr, Boulder, CO 80302
0.08
$10,197,500
4
4.5
5,075
Off Market
277 Spruce Ct, Boulder, CO 80302
0.08
$1,303,000
4
2.5
2,144
Off Market
453 Pine St, Boulder, CO 80302
0.11
$7,440,200
5
6.5
6,300
Off Market
436 Highland Ave, Boulder, CO 80302
0.12
$3,610,300
4
3
3,379
Off Market
275 Spruce Ct, Boulder, CO 80302
0.09
$1,174,200
3
2.5
2,144
Off Market
2230 Knollwood Dr, Boulder, CO 80302
0.14
$3,750,000
4
3
4,046
Recently Sold
505 Pine St, Boulder, CO 80302
0.13
$4,345,000
4
2.5
3,296
For Sale

Local Information

  • Map ViewExplore the area around 2123 4th St.
  • Schools1 Elementary School1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

Home Highlights

Property Type
Single-Family Home
Year Built
1925
Lot Size
0.4 acres
Living Area
3,847 sqft
Price/Sqft
$1,130
Parking
Garage

About this House

This single-family home is located at 2123 4th St, Boulder, CO. 2123 4th St is in the Mapleton Hill neighborhood in Boulder, CO and in ZIP code 80302. This property has 3 bedrooms, 3 bathrooms and approximately 3,847 sqft of floor space. This property has a lot size of 0.40 acres and was built in 1925.
2123 4th St, Boulder, CO 80302 is a 3 bedroom, 3 bathroom, 3,847 sqft single-family home in Mapleton Hill, built in 1925. It last sold for $4,000,000 on Jul 22, 2021. More recently, it was listed as a rental in January 2024 with an asking price of $12,500 per month. That rental listing was removed on January 19, 2024. It is currently off market. The Trulia Estimate is $4,346,000, with a rent estimate of $5,998/month.

Home Details for 2123 4th St

Interior Features

Interior Details
BasementNumber of Rooms: 9Types of Rooms: Dining Room, Family Room, Master Bath, Office, Sun Room
Heating & Cooling
Heating: RadiantAir ConditioningHeating Fuel: Radiant
Appliances & Utilities
DryerWasher
Levels, Entrance, & Accessibility
Floors: Tile, Hardwood

Exterior Features

Exterior Home Features
Roof: AsphaltExterior: Shingle, Wood, Brick
Parking & Garage
GarageParking: Off Street, Garage

Property Information

Year Built
Year Built: 1925Year Updated: 1989
Property Type / Style
Property Type: Single Family HomeArchitecture: Other

Community

Units in Building: 1

Lot Information

Lot Area: 0.40 acres

Additional Information

On Site Laundry Available

Price and Tax history

DateEventPrice
Jan 19, 2024
Source: Zillow Rentals
ListingRemoved
Jan 13, 2024
Source: Zillow Rentals
Listed For Rent
$12,500
Jan 12, 2024
Source: Zillow Rentals
ListingRemoved
Nov 2, 2023
Source: Zillow Rentals
PriceChange
$12,500
Price decreased by 17%
Sep 13, 2023
Source: Zillow Rentals
Listed For Rent
$14,999

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

Around this home

Neighborhood Overview

Mapleton Hill
See Local Highlights
Neighborhood stats provided by third party data sources.

What Locals Say about Mapleton Hill

At least 9 Trulia users voted on each feature.

  • 100 % Say it's walkable to restaurants

  • 100 % Say there are sidewalks

  • 95 % Say it's dog friendly

  • 90 % Say it's walkable to grocery stores

  • 84 % Say yards are well-kept

  • 82 % Say people would walk alone at night

  • 78 % Say kids play outside

  • 75 % Say there's wildlife

  • 67 % Say there's holiday spirit

  • 67 % Say parking is easy

  • 67 % Say there are community events

  • 64 % Say it's quiet

  • 63 % Say they plan to stay for at least 5 years

  • 57 % Say neighbors are friendly

  • 56 % Say streets are well-lit

  • 29 % Say car is needed

Sourced by Trulia users. Learn more about our methodology.
  • 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
    Flag
  • Trulia User
    "It seems as if most people own dogs . Very dog friendly . Dogs always seem well trained . Dogs also seem very friendly . "
    1
    Flag
  • Liz J.
    "There are lots of dog walkers and runners. Many wet dogs show that there is good swimming in the ditches. "
    1
    Flag
  • Taraarnolds
    "Loads of people out walking dogs and many folks stopping to chat too. You'll sometimes hear a dog or two barking, but never for long."
    0
    Flag
  • Thomas
    "I've lived in the Mapleton Hill neighborhood for 5 years. It is so convenient and quaint; my kids just love having the freedom to play with all the other kids here."
    1
    Flag
  • Maxclauson c. n.
    "Historic neighborhood that is close to town but secluded enough to be calm and quiet. Filled with interesting new arrivals and long time residents. "
    3
    Flag
  • Noah B.
    "Quiet and calm neighborhood, close to everything that makes Boulder great. Easy access to Pearl, Sanitas, Wonderland, and Ideal Market area. "
    1
    Flag
  • amazingdairy
    "West Pearl is truly a neighborhood unto itself, with a variety of shops & cafes and easy access to trails. Start your day with some tea and scones at Spruce Confections, enjoy browsing various antique stores and Two Hand Paperie, then select a bottle of wine at West End Wine Shop. Lolita's is conveniently located across the street to pick up last minute groceries for dinner, or you can enjoy a slice at Nick and Willy's and have some confectionary treats at Piece, Love & Chocolate. Settlers' Park is just down the street, as well as the trail heads to Red Rocks & Sanitas, and the Boulder Bike Path. When you live here, everything that makes Boulder so wonderful is only steps away!"
    2
    Flag

LGBTQ Local Legal Protections

Frequently asked questions about 2123 4th St

  • What is 2123 4th St estimated to be worth?
    Trulia's estimated value for 2123 4th St in Boulder, CO is $4,346,000.
  • What is the price history for 2123 4th St?
    2123 4th St in Boulder, CO last sold for $4,000,000 in July 2021.
  • 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.
  • Does 2123 4th St have laundry facilities?
    Yes, 2123 4th St in Boulder, CO has in-unit laundry.
  • How big is the lot at 2123 4th St?
    The lot at 2123 4th St in Boulder, CO is about 0.40 acres (17,348 sq ft).

Explore by feature - Pet Friendly

289 pet-friendly rentals in Boulder, CO

Explore by feature - Garage

221 rentals with a garage in Boulder, CO

Explore by feature - Air Conditioning

446 rentals with air conditioning in Boulder, CO

Explore by feature - Pool

266 rentals with a pool in Boulder, CO

Explore by feature - Washer/dryer

619 rentals with a washer/dryer in Boulder, CO

Explore by feature - Outdoor Space

87 rentals with an outdoor space in Boulder, CO

Apartments for Rent

Skip to last item
Skip to first item

Off Market Homes Near 2123 4th St

Skip to last item
Skip to first item

Homes for sale near 2123 4th St

Skip to last item
Skip to first item
Skip to last item
  • Results are loading
Skip to first item