1625 4th St
Boulder, CO 80302
Flatirons- 4 Beds
- 2 Baths
- 1,897 sqft
4 Beds
2 Baths
1,897 sqft
Local Information
-- mins to
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.
1625 4th St, Boulder, CO 80302 is a 4 bedroom, 2 bathroom, 1,897 sqft single-family home in Flatirons, built in 1960. It last sold for the $1,411,000 asking price on Feb 20, 2026. More recently, it was listed as a rental in March 2021 with an asking price of $2,000 per month. That rental listing was removed on April 12, 2021. It is currently off market. The Trulia Estimate is $1,401,400, with a rent estimate of $4,953/month.
Home Highlights
Parking
None
Outdoor
Patio
A/C
Heating & Cooling
HOA
None
Price/Sqft
$744/sqft
Listed
170 days ago
Home Details for 1625 4th St
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Interior Details Basement: NoneNumber of Rooms: 9Types of Rooms: Primary Bedroom, Bedroom 2, Bedroom 3, Bedroom 4, Dining Room, Kitchen, Laundry, Living Room, Study |
Beds & Baths Number of Bedrooms: 4Number of Bathrooms: 2Number of Bathrooms (full): 2Number of Bathrooms (main level): 2 |
Dimensions and Layout Living Area: 1897 Square Feet |
Appliances & Utilities Utilities: Natural Gas Available, Electricity AvailableAppliances: Electric Range, Dishwasher, Refrigerator, Washer, Dryer, Microwave, DisposalDishwasherDisposalDryerLaundry: Washer/Dryer HookupMicrowaveRefrigeratorWasher |
Heating & Cooling Heating: Forced Air,Hot Water,BaseboardHas CoolingAir Conditioning: Whole House FanHas HeatingHeating Fuel: Forced Air |
Gas & Electric Has Electric on Property |
Windows, Doors, Floors & Walls Window: Window CoveringsFlooring: Wood |
Levels, Entrance, & Accessibility Stories: 1Levels: OneFloors: Wood |
View No View |
Security Security: Fire Alarm |
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Exterior Home Features Roof: CompositionPatio / Porch: Patio, EnclosedFencing: Partial, Fenced, Metal, Vinyl |
Parking & Garage Other Parking: NoneNo CarportNo GarageNo Attached GarageParking: None |
Frontage Road Frontage: City StreetRoad Surface Type: AsphaltNot on Waterfront |
Water & Sewer Sewer: Public Sewer |
Farm & Range Does Not Include Irrigation Water Rights |
Finished Area Finished Area (above surface): 1897 Square Feet |
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Year Built Year Built: 1960 |
Property Type / Style Property Type: ResidentialProperty Subtype: Mixed Use |
Building Construction Materials: FrameNot a New ConstructionNot Attached Property |
Property Information Usage of Home: Single Family, Multi-FamilyNot Included in Sale: Seller's Personal PropertyParcel Number: R0001009 |
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Price List Price: $1,411,000Price Per Sqft: $744/sqft |
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MLS Status: Sold |
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Direction & Address City: BoulderCommunity: Flatirons |
School Information Elementary School: FlatironsJr High / Middle School: ManhattanHigh School: BoulderHigh School District: Boulder Valley Dist RE2 |
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Building Area Building Area: 1897 Square Feet |
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No HOA |
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Lot Area: 5335 sqft |
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Special Conditions: Private Owner |
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Listing Terms: Cash, Conventional |
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Mls Number: 1049877Attribution Contact: 206-851-7998Above Grade Unfinished Area: 1897Activation Date: Tue Jan 20 2026Showing Service Name: ShowingTime |
Last check for updates: about 3 hours ago
Listed by Autumn White, (206) 851-7998
Compass - Boulder
Bought with: Jennifer Egbert, (303) 619-3373, milehimodern - Boulder
Source: IRES as distributed by MLS GRID, MLS#1049877

Price History for 1625 4th St
| Date | Price | Event | Source |
|---|---|---|---|
| 02/20/2026 | $1,411,000 | Sold | IRES as distributed by MLS GRID #1049877 |
| 02/03/2026 | $1,411,000 | PendingToActive | IRES as distributed by MLS GRID #1049877 |
| 01/25/2026 | $1,411,000 | Pending | REcolorado as distributed by MLS GRID #IR1049877 |
| 01/20/2026 | $1,411,000 | Listed For Sale | IRES as distributed by MLS GRID #1049877 |
| 04/12/2021 | ListingRemoved | Zillow Rental Manager | |
| 03/30/2021 | $2,000 | Listed For Rent | Zillow Rental Manager |
| 10/23/2019 | $2,000 | ListingRemoved | N/A |
| 10/08/2019 | $2,000 | Listed For Rent | N/A |
| 07/01/2003 | $500,000 | Sold | N/A |
Market trends in Boulder
Last updated May 2026
Avg. sale price
$955K
$13.33KMoM
Sale-to-List Price
97.9%
1.0%MoM
Price per sq ft
$503
$12MoM
Available listings
775
41MoM
Property Tax and Assessment
| Year | 2025 |
|---|---|
| Tax | $7,327 |
| Assessment | $1,294,101 |
Home facts updated by county records
Comparable Sales for 1625 4th St
Address | Distance | Property Type | Sold Price | Sold Date | Bed | Bath | Sqft |
|---|---|---|---|---|---|---|---|
0.28 | Single-Family Home | $1,176,000 | 07/08/26 | 4 | 2.5 | 2,659 | |
0.23 | Single-Family Home | $1,575,000 | 07/25/25 | 3 | 3 | 1,968 | |
0.29 | Single-Family Home | $1,400,000 | 08/04/25 | 2 | 2.5 | 1,788 | |
0.10 | Single-Family Home | $2,350,000 | 05/28/26 | 4 | 4 | 3,501 | |
0.36 | Single-Family Home | $1,400,000 | 09/12/25 | 2 | 2 | 1,232 | |
0.62 | Single-Family Home | $1,525,000 | 08/29/25 | 3 | 2 | 2,234 | |
0.19 | Single-Family Home | $1,815,675 | 08/12/25 | 4 | 4 | 2,583 | |
0.42 | Single-Family Home | $1,311,000 | 07/31/25 | 4 | 2 | 2,624 | |
0.10 | Single-Family Home | $2,240,000 | 04/14/26 | 3 | 3.5 | 3,711 |
Nearby homes
Get a sense of prices in the area by checking nearby homes.Assigned Schools
These are the assigned schools for 1625 4th St.
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.
LGBTQ Local Legal Protections
LGBTQ Local Legal Protections
Apartments for Rent
Homes for sale near 1625 4th St
Off Market Homes Near 1625 4th St

Based on information submitted to the MLS GRID as of 2026-07-09 06:38:03 PDT. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information. Some IDX listings have been excluded from this website. Click here for more information

