1625 4th St, Boulder, CO 80302 - Photo 1

1/1

$1,411,000

Sold
Closed
Single Family
4 Beds
2 Full Baths
1,897 Sq. Ft.

1/1

Property Description

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

Full Property Details for 1625 4th St

General

Sold For: $1,411,000
Taxes: $7,327 (2024)
Status: Closed
Type: Single Family
Source: IRES
MLS ID: 1049877
Added to Site: 62 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

Parking Features: None
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
Permitted 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
Sold by milehimodern - Boulder (206) 851-7998

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Listing agent

— 1625 4th St —

Compass - Boulder

303-487-5472

2068517998

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Schools

Schools serving 1625 4th St

School District:Boulder Valley School District Re-2

Name	Grades	Distance
Flatirons Elementary School 1150 7th Street, Boulder, CO 80302	K-5	0.4 mi
Manhattan Middle School Of The Arts And Academics 290 Manhattan Drive, Boulder, CO 80303	6-8	3.6 mi
Boulder High School 1604 Arapahoe Avenue, Boulder, CO 80302	9-12	1 mi

Disclaimer: School attendance boundaries provided by ATTOM Data Solutions and are for reference only. Contact the school directly to verify enrollment eligibility.

Price & Sales History for 1625 4th St

Date

Details

Price

Change

Source

2/20/2026

Sold

$1,411,000

—

MLS

1/20/2026

Listed

$1,411,000

—

MLS

Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

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Active
Updated 1 day ago

4
Beds
4
Total Baths
2,116
Sq. Ft.
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Updated 21 hours ago

4
Beds
4
Total Baths
2,871
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Updated 1 day ago

5
Beds
5
Total Baths
5,010
Sq. Ft.
MLS # 1054107

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$950,000

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Single Family
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Updated 1 day ago

3
Beds
4
Total Baths
3,018
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Updated 1 day ago

3
Beds
4
Total Baths
2,234
Sq. Ft.
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Active
Updated 3 days ago

3
Beds
4
Total Baths
2,431
Sq. Ft.
MLS # 1053144

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$939,500

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Single Family
Active
Updated 2 days ago

4
Beds
4
Total Baths
3,686
Sq. Ft.
MLS # 1041100

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Sold

$1,595,000

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Single Family
Closed

2
Beds
3
Total Baths
1,762
Sq. Ft.
MLS # 1043979

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Sold

$1,595,000

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Townhouse
Closed

2
Beds
3
Total Baths
1,762
Sq. Ft.
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Sold

$1,211,000

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Townhouse
Closed

3
Beds
3
Total Baths
1,784
Sq. Ft.
MLS # 1050422

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Single Family
Closed

4
Beds
3
Total Baths
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Sq. Ft.
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Listed by Fathom Realty Colorado LLC

1625 4th St, Boulder, CO 80302 (MLS# 1049877) is a Single Family property that was sold at $1,411,000 on February 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.

1625 4th St Boulder, CO 80302