3333 23rd St, Boulder, CO 80304
Property image
Property image
OFF MARKET

$10,174,700

Trulia Estimate
  • 12 Beds
  • 6,369 sqft (on 6.23 acres)

3333 23rd St, Boulder, CO 80304

Old North Boulder
Est. Refi. Payment $56,339/mo*
Refinance Your Home
Currently Off Market - Sold Feb 17, 2015 for $4,900,000

Home Value

Trulia Estimate
$10.2M
Since last month
Increased$143K (+1.4%)
Since last year
Increased$789K (+8.4%)
Since last sale
Increased$5M (+107.3%)
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 +70% in the last 10 years
MonthEstimated value
2026
August 2026$10.16M
July 2026$10.02M
June 2026$10.51M
May 2026$10.09M
April 2026$10.14M
March 2026$10.15M
February 2026$10M
January 2026$9.6M
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
2435 Hawthorn Avenue, Boulder, CO
0.11
Single-Family Home
$2,275,000
04/20/26
5
3.5
3,082
2165 Kincaid Pl, Boulder, CO
0.27
Single-Family Home
$2,000,000
12/05/25
7
5
4,456
2025 Hermosa Dr, Boulder, CO
0.14
Single-Family Home
$2,150,000
04/15/26
5
4
3,040
3180 18th St, Boulder, CO
0.42
Single-Family Home
$3,550,000
05/08/26
6
5.5
4,581
2595 Glenwood Dr, Boulder, CO
0.24
Single-Family Home
$2,225,000
06/04/26
5
4.5
4,028
2525 Meadow Ave, Boulder, CO
0.48
Single-Family Home
$3,700,000
05/26/26
3
3.5
4,319
3125 Fremont St, Boulder, CO
0.27
Single-Family Home
$1,920,000
07/15/26
6
3
3,109
2233 Kincaid Pl, Boulder, CO
0.25
Single-Family Home
$1,672,100
06/26/26
5
3.5
3,168
1650 Wilson Ct, Boulder, CO
0.76
Single-Family Home
$5,355,000
10/28/25
5
4
5,946
1525 Jennine Pl, Boulder, CO
0.65
Single-Family Home
$4,082,500
05/01/26
4
4.5
5,338

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
2250 Grape Ave, Boulder, CO 80304
0.11
$1,322,300
4
1.5
1,716
Off Market
2270 Grape Ave, Boulder, CO 80304
0.11
$1,300,000
3
2
1,786
Recently Sold
2315 Grape Ave, Boulder, CO 80304
0.11
$1,295,400
3
2
1,593
Off Market
2350 Hawthorn Ave, Boulder, CO 80304
0.11
$1,151,000
3
2
1,584
Off Market
2090 Grape Ave, Boulder, CO 80304
0.11
$2,161,000
4
3
2,818
Off Market
2424 Iris Ave #(Set Back), Boulder, CO 80304
0.08
$1,534,600
4
3
3,161
Off Market
2435 Hawthorn Avenue, Boulder, CO 80304
0.11
$2,275,000
5
3.5
3,082
Recently Sold
2085 Glenwood Dr, Boulder, CO 80304
0.13
$1,222,800
3
1.5
1,320
Off Market
2242 Juniper Ct, Boulder, CO 80304
0.09
$1,085,800
4
2.5
2,844
Off Market
2410 Grape Ave, Boulder, CO 80304
0.15
$1,065,000
3
2
2,896
Recently Sold
2212 Juniper Ct, Boulder, CO 80304
0.10
$1,238,400
3
3
3,216
Off Market
2435 Grape Ave, Boulder, CO 80304
0.15
$1,138,400
3
2
1,567
Off Market

Local Information

  • Map ViewExplore the area around 3333 23rd St.
  • Schools1 Preschool School1 Elementary School1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

Home Highlights

Property Type
Single-Family Home
Year Built
1959
Lot Size
6.23 acres
Living Area
6,369 sqft
Price/Sqft
$1,598
Parking
Garage

About this House

A truly beautiful, unique parcel of land in the heart of Boulder; yes there really is a 6 acre piece of land just a 5 minute walk to shopping plazas, 10 to 15 minute bike ride to downtown Boulder and/or the University of Colorado. Enter into a pristine oasis that just awaits your imagination. Family home dates to the 1950's; farm heritage to the late 1800's. Water rights; gorgeous views of the flatirons; wildlife and natural setting but with development potential. Let your dreams play out here.
3333 23rd St, Boulder, CO 80304 is a 12 bedroom, 6,369 sqft single-family home in Old North Boulder, built in 1959. It last sold for $4,900,000 on Feb 17, 2015. This property is not currently displayed as for sale or rent on Trulia. The Trulia Estimate is $10,174,700, with a rent estimate of $4,298/month.

Home Details for 3333 23rd St

Interior Features

Interior Details
BasementNumber of Rooms: 15
Heating & Cooling
Heating: Forced AirAir ConditioningCooling System: CentralHeating Fuel: Forced Air
Levels, Entrance, & Accessibility
Stories: 2

Exterior Features

Exterior Home Features
Roof: OtherExterior: Shingle, Wood, Brick
Pool
Pool
Parking & Garage
GarageParking: Garage Attached, Garage Detached

Property Information

Year Built
Year Built: 1959Year Updated: 2015
Property Type / Style
Property Type: Single Family HomeArchitecture: Other

Community

Units in Building: 1

Lot Information

Lot Area: 6.23 acres

Additional Information

Greenhouse

Price and Tax history

DateEventPrice
Apr 29, 2015
Source: Agent Provided
ListingRemoved
$5,200,000
Apr 27, 2015
Source: Agent Provided
Listed For Sale
$5,200,000
Feb 17, 2015
Source: N/A
Sold
$4,900,000
Jun 3, 2014
Source: Agent Provided
PriceChange
$5,200,000
Price decreased by 5%
Jan 23, 2014
Source: Agent Provided
PriceChange
$5,450,000
Price decreased by 8%

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

Old North Boulder
See Local Highlights
Neighborhood stats provided by third party data sources.

What Locals Say about Old North Boulder

At least 15 Trulia users voted on each feature.

  • 100 % Say it's dog friendly

  • 95 % Say there are sidewalks

  • 93 % Say there's wildlife

  • 91 % Say it's walkable to grocery stores

  • 90 % Say there's holiday spirit

  • 88 % Say it's walkable to restaurants

  • 88 % Say parking is easy

  • 83 % Say kids play outside

  • 79 % Say it's quiet

  • 78 % Say people would walk alone at night

  • 72 % Say yards are well-kept

  • 68 % Say neighbors are friendly

  • 62 % Say they plan to stay for at least 5 years

  • 55 % Say car is needed

  • 35 % Say streets are well-lit

  • 20 % Say there are community events

Sourced by Trulia users. Learn more about our methodology.

LGBTQ Local Legal Protections

Frequently asked questions about 3333 23rd St

  • What is 3333 23rd St estimated to be worth?
    Trulia's estimated value for 3333 23rd St in Boulder, CO is $10,174,700.
  • What is the price history for 3333 23rd St?
    3333 23rd St in Boulder, CO last sold for $4,900,000 in February 2015.
  • 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 3333 23rd St have air conditioning?
    Yes, 3333 23rd St in Boulder, CO has air conditioning.
  • Does 3333 23rd St have a pool?
    Yes, 3333 23rd St in Boulder, CO has a pool.

Explore by feature - Pet Friendly

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Explore by feature - Garage

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Explore by feature - Air Conditioning

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Explore by feature - Pool

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Explore by feature - Washer/dryer

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Explore by feature - Outdoor Space

91 rentals with an outdoor space in Boulder, CO

Apartments for Rent

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