1603 4th St, Boulder, CO 80302
OFF MARKET

$2,417,800

Trulia Estimate
  • 3 Beds
  • 2 Baths
  • 2,641 sqft (on 0.26 acres)

1603 4th St, Boulder, CO 80302

Flatirons
Est. Refi. Payment $13,369/mo*
Refinance Your Home

Home Value

Trulia Estimate
$2.42M
Since last month
$500 (0%)
Since last year
Increased$44K (+1.9%)
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 +40% in the last 10 years
MonthEstimated value
2026
August 2026$2.41M
July 2026$2.41M
June 2026$2.49M
May 2026$2.58M
April 2026$2.54M
March 2026$2.48M
February 2026$2.42M
January 2026$2.34M
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
1625 4th St, Boulder, CO
0.04
Single-Family Home
$1,411,000
02/20/26
4
2
1,897
1517 7th St, Boulder, CO
0.31
Single-Family Home
$1,820,000
08/17/26
3
2
1,380
580 Pleasant St, Boulder, CO
0.28
Single-Family Home
$2,350,000
11/19/25
3
2.5
2,655
349 W Arapahoe Ln, Boulder, CO
0.14
Single-Family Home
$2,240,000
04/14/26
3
3.5
3,711
610 University Ave, Boulder, CO
0.28
Single-Family Home
$1,802,500
05/04/26
5
3
3,008
410 College Ave, Boulder, CO
0.19
Single-Family Home
$2,242,641
06/18/26
4
2
3,260
1006 6th St, Boulder, CO
0.45
Single-Family Home
$2,700,000
01/16/26
3
3
2,616
563 Arapahoe Ave, Boulder, CO
0.25
Single-Family Home
$3,700,000
12/17/25
4
4
3,317
512 Marine St, Boulder, CO
0.16
Single-Family Home
$4,650,000
11/21/25
4
4.5
5,048
623 Marine St, Boulder, CO
0.28
Single-Family Home
$1,176,000
07/08/26
4
2.5
2,659

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
435 University Ave, Boulder, CO 80302
0.07
$3,419,200
4
5
3,340
Off Market
1625 4th St, Boulder, CO 80302
0.04
$1,411,000
4
2
1,897
Recently Sold
350 Arapahoe Avenue #20, Boulder, CO 80302
0.06
$175,000
2
1.5
851
For Sale
350 Arapahoe Ave #17, Boulder, CO 80302
0.07
$169,900
2
1.5
851
Off Market
423 Marine St, Boulder, CO 80302
0.06
$2,685,500
4
3.5
2,958
Off Market
350 Arapahoe Avenue #25, Boulder, CO 80302
0.07
$182,300
1
1
320
Off Market
458 Marine St, Boulder, CO 80302
0.09
$3,254,500
5
4
4,282
Off Market
474 Marine St #CU2, Boulder, CO 80302
0.11
$1,139,400
2
2
1,740
Off Market
370 Arapahoe Ave #C, Boulder, CO 80302
0.09
$1,920,000
3
3
1,904
For Sale
465 Marine St, Boulder, CO 80302
0.10
$2,350,000
4
4
3,501
Recently Sold
358 Arapahoe Ave #A, Boulder, CO 80302
0.11
$3,829,600
3
4.5
2,979
Off Market
401 Arapahoe Ave, Boulder, CO 80302
0.11
$1,270,700
4
2
1,680
Off Market

Local Information

  • Map ViewExplore the area around 1603 4th St.
  • Schools1 Elementary School1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

Home Highlights

Property Type
Single-Family Home
Year Built
1865
Lot Size
0.26 acres
Living Area
2,641 sqft
Price/Sqft
$915
Parking
Garage

About this House

This single-family home is located at 1603 4th St, Boulder, CO. 1603 4th St is in the Flatirons neighborhood in Boulder, CO and in ZIP code 80302. This property has 3 bedrooms, 2 bathrooms and approximately 2,641 sqft of floor space. This property has a lot size of 0.26 acres and was built in 1865.
1603 4th St, Boulder, CO 80302 is a 3 bedroom, 2 bathroom, 2,641 sqft single-family home in Flatirons, built in 1865. This property is not currently displayed as for sale or rent on Trulia. The Trulia Estimate is $2,417,800, with a rent estimate of $4,724/month.

Home Details for 1603 4th St

Interior Features

Heating & Cooling
Heating: Baseboard, Heat Pump, GasAir ConditioningCooling System: EvaporativeHeating Fuel: Baseboard
Levels, Entrance, & Accessibility
Stories: 2Floors: Hardwood
Interior Details
Number of Rooms: 8Types of Rooms: Breakfast Nook, Family Room, Laundry Room
Appliances & Utilities
Cable ReadyDishwasherDisposalDryerMicrowaveRefrigeratorWasher
Fireplace & Spa
Fireplace
Windows, Doors, Floors & Walls
Double Paned Windows

Exterior Features

Exterior Home Features
Roof: AsphaltDeckExterior: WoodLawnPatioSprinkler System
Parking & Garage
GarageParking Space: 1Parking: Garage Attached

Property Information

Year Built
Year Built: 1865Year Updated: 2000
Property Type / Style
Property Type: Single Family HomeArchitecture: Other

Community

Units in Building: 1

Lot Information

Lot Area: 0.26 acres

Price and Tax history

YearProperty taxTax assessment
2025
$15,593
$2,833,700
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

Around this home

Neighborhood Overview

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

What Locals Say about Flatirons

At least 4 Trulia users voted on each feature.

  • 100 % Say it's walkable to restaurants

  • 100 % Say parking is easy

  • 89 % Say it's dog friendly

  • 86 % Say there's holiday spirit

  • 86 % Say people would walk alone at night

  • 83 % Say it's walkable to grocery stores

  • 80 % Say it's quiet

  • 80 % Say yards are well-kept

  • 75 % Say there are sidewalks

  • 75 % Say streets are well-lit

  • 71 % Say they plan to stay for at least 5 years

  • 63 % Say there's wildlife

  • 61 % Say neighbors are friendly

  • 57 % Say kids play outside

  • 50 % Say car is needed

  • 50 % Say there are community events

Sourced by Trulia users. Learn more about our methodology.
  • 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. "
    0
    Flag
  • Meganelizabethfettig
    "It’s close to the creek the park and roads that go up mountain roads but I don’t like hearing the traffics from Canyon. It also feels claustrophobic to me but I’m a mountain girl."
    1
    Flag

LGBTQ Local Legal Protections

Frequently asked questions about 1603 4th St

  • What is 1603 4th St estimated to be worth?
    Trulia's estimated value for 1603 4th St in Boulder, CO is $2,417,800.
  • 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 are the closest schools to 1603 4th St?
    The closest schools to 1603 4th St in Boulder, CO are Boulder High School (rated 9/10), Flatirons Elementary School (rated 8/10), Manhattan Middle School Of The Arts And Academics (rated 9/10).
  • Does 1603 4th St have air conditioning?
    Yes, 1603 4th St in Boulder, CO has air conditioning.
  • Does 1603 4th St have laundry facilities?
    Yes, 1603 4th St in Boulder, CO has in-unit laundry.

Explore by feature - Pet Friendly

269 pet-friendly rentals in Boulder, CO

Explore by feature - Garage

202 rentals with a garage in Boulder, CO

Explore by feature - Air Conditioning

412 rentals with air conditioning in Boulder, CO

Explore by feature - Pool

248 rentals with a pool in Boulder, CO

Explore by feature - Washer/dryer

581 rentals with a washer/dryer in Boulder, CO

Explore by feature - Outdoor Space

90 rentals with an outdoor space in Boulder, CO

Apartments for Rent

Skip to last item
Skip to first item

Off Market Homes Near 1603 4th St

Skip to last item
Skip to first item

Homes for sale near 1603 4th St

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