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$1,411,000 New to Website

  • For Sale
  • Active
  • Single Family
  • 4 Beds
  • 2 Full Baths
  • 1,897 Sq. Ft.
  • Updated 2 days ago
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1625 4th St, Boulder, COVideo Tour of 1625 4th St, Boulder, CO.
Two Mid-Century Modern Homes on One Lot near Downtown Boulder. Rarely does a property like this come to market in one of Boulder's most sought-after neighborhoods. Located near 4th & Marine, this legal non-conforming duplex features two separate mid-century modern homes on one lot, each with 2 bedrooms, 1 bathroom, built-in storage, and walls of natural light. The front house was built in 1946 and the back house was constructed in 1960. A shared courtyard connects the homes providing both covered and open patio space with opportunities for gardening, entertaining, or future additions. Inside, each home was designed with comfortable living in mind, offering smart layouts, storage solutions, and timeless mid-century character. Additional features include a shared laundry room and easy access to Boulder's best amenities. Just blocks from Downtown Boulder, Boulder Creek, and Eben G. Fine Park, the location combines convenience with a peaceful residential feel. With multiple paths forward-income property, multi-generational living, owner-occupant with rental, or full renovation and expansion-this property offers unparalleled flexibility and long-term potential in a prime Boulder location.

Full Property Details for 1625 4th St

General

  • Price: $1,411,000
  • Taxes: $7,327 (2024)
  • Status: Active
  • Type: Single Family
  • Source: IRES
  • MLS ID: 1049877
  • Updated: 1/20/2026
  • Added to Site: 2 day(s) ago

Interior

  • Interior Features: Eat-In Kitchen, Washer/Dryer Hookup, Kitchen Island
  • Appliances: Electric Range, Dishwasher, Refrigerator, Washer, Dryer, Microwave, Disposal, Fire Alarm
  • Flooring: Wood

Rooms

Bathrooms

  • Total Bathrooms: 2
  • Full Bathrooms: 2
  • Main Floor Baths: 2

Bedrooms

  • Total Bedrooms: 4

Exterior

  • Porch/Patio/Deck: Patio, Enclosed

Parking

  • Garage Description: None

Location

  • Area: Boulder
  • County: Boulder
  • Subdivision: Flatirons
  • Driving Directions: Home is located on the west side of 4th street between Arapahoe and Marine.

School Information

  • School District: Boulder Valley Dist RE2
  • Elementary School: Flatirons
  • Middle School: Manhattan
  • High School: Boulder

Heating & Cooling

  • Cooling Type: Whole House Fan
  • Heating Type: Forced Air, Hot Water, Baseboard

Utilities

  • Gas: Yes
  • Sewer: Public Sewer
  • Water: City
  • Utility Description: Natural Gas Available, Electricity Available

Structural Information

  • Construction: Frame
  • Exterior Const.: Frame
  • Basement Desc.: None
  • Roof: Composition
  • Windows: Window Coverings
  • Square Feet: 1,897
  • Sq. Ft. Source: Assessor
  • Living Area: 1,897 Sq. Ft.
  • Year Built: 1960

Lot Features

  • Lot Size (Acres): 0.12
  • Lot Size (Sq. Ft.): 5,335
  • Frontage: City Street
  • Street/Road Desc.: Asphalt
  • Fence: Yes
  • Lot Features: Level, Paved, Curbs, Gutters, Sidewalks, Fire Hydrant within 500 Feet
  • Potential Use: Single-Family, Multi-Family
  • Zoning: RES
  • Fencing (Description): Partial, Fenced, Metal, Vinyl

Financial Considerations

  • Tax Amount: $7,327
  • Tax Year: 2024
  • Terms: Cash, Conventional

Disclosures and Reports

  • Special Conditions: Private Owner
  • Exclusions: Seller's Personal Property
  • Property ID: R0001009

Listed by Compass - Boulder (303) 487-5472

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Listing agent

— 1625 4th St —

  • Compass - Boulder

    303-487-5472

2068517998

Get Pre-Approved Today

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Schools serving 1625 4th St

School District:Boulder Valley School District Re-2
NameGradesDistance
Flatirons Elementary School
1150 7th Street, Boulder, CO 80302
K-50.4 mi
Manhattan Middle School Of The Arts And Academics
290 Manhattan Drive, Boulder, CO 80303
6-83.6 mi
Boulder High School
1604 Arapahoe Avenue, Boulder, CO 80302
9-121 mi
Disclaimer: School attendance boundaries provided by Pitney Bowes and are for reference only. Contact the school directly to verify enrollment eligibility.

Price & Sales History for 1625 4th St Get Price Alerts and Save Property

Date
Details
Price
Change
Source
1/20/2026
Listed
$1,411,000
182.2%
MLS
7/01/2003
Sold
$500,000
—
Public Record
Get Price Alerts and Save Property
Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

Tax History for 1625 4th St

Year
Property Taxes
Change
Tax Assessment
Change
2024
$7,327
2%
$81,573
-4%
2023
$7,195
12%
$85,257
26%
2022
$6,441
5%
$67,749
-3%
2021
$6,149
—
$69,698
3%
2021
$6,149
17%
$67,568
11%
2018
$5,275
-9%
$60,840
-10%
2019
$5,791
13%
$67,568
11%
2017
$5,110
14%
$60,840
18%
2016
$4,464
6%
$51,565
—
2015
$4,227
7%
$51,565
12%
2014
$3,945
2%
$45,882
—
2013
$3,858
—
$45,882
—
View All
Disclaimer: Historical tax information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

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*These costs are estimates, and the interest rates assume exceptional credit standing.

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NMLS#: 1598647

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Listed by Compass - Boulder (303) 487-5472

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1625 4th St, Boulder, CO 80302 (MLS# 1049877) is a Single Family property with 4 bedrooms and 2 full bathrooms. 1625 4th St is currently listed for $1,411,000 and was received on January 20, 2026. Want to learn more about 1625 4th St? Do you have questions about finding other Single Family real estate for sale in Boulder? You can browse all Boulder real estate or contact a Coldwell Banker agent to request more information.

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