840 Union Ave, Boulder, CO 80304
Property image
Property image
OFF MARKET

$1,977,000

Trulia Estimate
  • 5 Beds
  • 4 Baths
  • 3,404 sqft

840 Union Ave, Boulder, CO 80304

North Wonderland
Est. Refi. Payment $11,780/mo*
Refinance Your Home
Currently Off Market - Sold May 22, 2015 for $1,075,000

Home Value

Trulia Estimate
$1.98M
Since last month
Decreased$26K (-1.3%)
Since last year
Increased$42K (+2.2%)
Since last sale
Increased$908K (+84.4%)
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 +58% in the last 10 years
MonthEstimated value
2026
September 2026$1.98M
August 2026$2.01M
July 2026$1.99M
June 2026$2.01M
May 2026$2.01M
April 2026$2.01M
March 2026$2M
February 2026$1.94M
January 2026$1.85M
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
1111 Utica Cir, Boulder, CO
0.20
Single-Family Home
$1,500,000
07/24/26
5
3.5
3,170
860 Union Avenue, Boulder, CO
0.02
Single-Family Home
$2,221,785
09/11/26
5
4
4,318
1001 Utica Cir, Boulder, CO
0.19
Single-Family Home
$1,700,000
09/16/26
4
4
3,389
468 Locust Pl, Boulder, CO
0.23
Single-Family Home
$1,784,280
09/30/25
5
3
4,248
995 Quince Ave, Boulder, CO
0.34
Single-Family Home
$1,820,000
07/14/26
4
4
3,794
1063 Quince Ave, Boulder, CO
0.34
Single-Family Home
$1,350,000
06/17/26
3
4
2,464
1409 Quince Ave, Boulder, CO
0.48
Single-Family Home
$1,450,000
12/15/25
4
3.5
2,975
950 Quince Ave #A, Boulder, CO
0.38
Single-Family Home
$2,300,000
10/14/25
5
4
2,793
990 Utica Circle, Boulder, CO
0.18
Single-Family Home
$2,800,000
10/28/25
5
4.5
5,179
950 Quince Ave, Boulder, CO
0.39
Single-Family Home
$2,300,000
10/08/25
4
3.5
2,804

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
860 Union Avenue, Boulder, CO 80304
0.02
$2,221,785
5
4
4,318
Recently Sold
855 Union Ave, Boulder, CO 80304
0.05
$1,939,600
6
3.5
2,328
Off Market
805 Union Avenue, Boulder, CO 80304
0.05
$1,073,300
3
2
1,200
Off Market
735 Utica Ave, Boulder, CO 80304
0.05
$3,027,800
4
4
4,178
Off Market
780 Utica Ave, Boulder, CO 80304
0.07
$1,167,800
2
1.5
1,317
Off Market
786 Cottage Ln, Boulder, CO 80304
0.09
$1,063,100
2
1.5
1,168
Off Market
725 Union Ave, Boulder, CO 80304
0.11
$1,115,800
4
3
2,194
Off Market
625 Utica Ave, Boulder, CO 80304
0.12
$2,827,100
5
3.5
4,854
Off Market
758 Cottage Ln, Boulder, CO 80304
0.11
$1,160,700
3
2.5
1,336
Off Market
932 Locust Ave, Boulder, CO 80304
0.14
$2,037,000
4
3.5
3,462
Off Market
564 Locust Pl, Boulder, CO 80304
0.15
$1,652,800
4
3.5
3,177
Off Market
952 Utica Cir, Boulder, CO 80304
0.15
$2,020,900
6
3.5
3,964
Off Market

Local Information

  • Map ViewExplore the area around 840 Union Ave.
  • Schools1 Elementary School1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

Home Highlights

Single-Family Home
Built in 2013
3,404 sqft
$581/sqft

About this House

This single-family home is located at 840 Union Ave, Boulder, CO. 840 Union Ave is in the North Wonderland neighborhood in Boulder, CO and in ZIP code 80304. This property has 5 bedrooms, 4 bathrooms and approximately 3,404 sqft of floor space. This property has a lot size of 7187 sqft and was built in 2013.
840 Union Ave, Boulder, CO 80304 is a 5 bedroom, 4 bathroom, 3,404 sqft single-family home in North Wonderland, built in 2013. It last sold for $1,075,000 on May 22, 2015. This property is not currently displayed as for sale or rent on Trulia. The Trulia Estimate is $1,977,000, with a rent estimate of $5,663/month.

Home Details for 840 Union Ave

Interior Features

Heating & Cooling
Heating: Forced AirAir ConditioningCooling System: CentralHeating Fuel: Forced Air
Levels, Entrance, & Accessibility
Stories: 2
Interior Details
Number of Rooms: 9

Exterior Features

Exterior Home Features
Roof: OtherDeckExterior: Shingle, Wood
Parking & Garage
Parking: Carport

Property Information

Year Built
Year Built: 2013Year Updated: 1988
Property Type / Style
Property Type: Single Family HomeArchitecture: Other

Lot Information

Lot Area: 7193 sqft

Price and Tax history

DateEventPrice
May 22, 2015
Source: IRES as distributed by MLS GRID #745583
Sold
$1,075,000
Jan 14, 2015
Source: Agent Provided
ListingRemoved
$1,049,000
Nov 16, 2014
Source: Agent Provided
PriceChange
$1,049,000
Price decreased by 5%
Oct 22, 2014
Source: Agent Provided
PriceChange
$1,099,000
Price decreased by 4%
Oct 3, 2014
Source: Agent Provided
PriceChange
$1,149,000
Price decreased by 4%

Market trends in Boulder

Last updated August 2026
Buyer'sMarketSeller'sMarket
Avg. sale price
$904K
$6.67KMoM
Sale-to-List Price
98.2%
0.2%MoM
Price per sq ft
$489
$10MoM
Available listings
765
3MoM

Around this home

Neighborhood Overview

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

What Locals Say about North Wonderland

  • Azeljo
    "The Skip stops often and is quick ride to downtown pearl street mall or connect to the main bus stop which goes anywhere."
    3
    Flag
  • Azeljo
    "Great location nestled among a lake, mountains and a gorgeous park. Short walk to the grocery store, cafes."
    0
    Flag
  • Jan K.
    "I enjoy the quietness, closeness to nature, friendly neighbors. I appreciate the quality of nearby grocery store with abundance of organic food & quality meat & poultry. Several coffee shops within walking distance. Waldorf Elementary & High School, Foothills Community Park, Wonderland Lake, and City of Boulder Open Space all within a short distance. RTD, the public bus, runs about every 10 minutes from various stops on Broadway. Bus to downtown & to University of Colorado & to Denver International Airport. Northwest Boulder is a fabulous area to live in. My house has continued to increase in value. This area is strong in this economy."
    1
    Flag

LGBTQ Local Legal Protections

Frequently asked questions about 840 Union Ave

  • What is 840 Union Ave estimated to be worth?
    Trulia's estimated value for 840 Union Ave in Boulder, CO is $1,977,000.
  • What is the price history for 840 Union Ave?
    840 Union Ave in Boulder, CO last sold for $1,075,000 in May 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 $904K. That is up $6.67K from the prior month.
  • Does 840 Union Ave have air conditioning?
    Yes, 840 Union Ave in Boulder, CO has air conditioning.
  • How big is the lot at 840 Union Ave?
    The lot at 840 Union Ave in Boulder, CO is about 0.16 acres (7,187 sq ft).

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