1825 Marine St #13
About This Property
Inside, the space lives larger than expected with vaulted ceilings, a large skylight that floods the home with natural light, and a versatile loft that adds flexibility for work or additional living space. A private deck and cozy wood-burning fireplace create the perfect balance of indoor-outdoor living and comfort year-round.
Practicality meets opportunity with one reserved parking space and rare bonus storage-two dedicated storage lockers in the building's basement (most units include just one), plus an additional lofted storage area within the unit (not included in total square footage and not intended for sleeping).
Whether you're looking for a smart investment near campus or a low-maintenance home base close to everything Boulder has to offer, this one checks all the boxes.
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Cap Rate Calculator
What does this mean?
Based on our analysis, the cap rate of this property is 1.25%. A negative cap rate indicates that the property might not be feasible as an income-producing asset. The median cap rate for a near zip code 11238 is 4.23%.
How much can I actually make?
Actual monthly rental income may vary between $4,760 and $7,140 depending on unit-specific characteristics. You can change the amount using the slider to further explore.
How is cap rate calculated?
Cap Rate = Net Operating Income (NOI) / Property Asset Value.
When calculating the cap rate, we assume 100% occupancy. Leverage (mortgage) is not considered.
Cap Rate provided by RealtyHop and RentHop, learn more about cap rate here.
Price History
| Date / Event | Date | Event | Price |
|---|---|---|---|
| Aug 19, 2026 | No longer available | - | |
| No longer available | |||
| Aug 19, 2026 | Listed | $325,000 | |
| Listed | |||
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Prime Boulder location with unbeatable access to both campus life and downtown energy. Just moments from CU, The Hill, Naropa, Pearl Street, and the Boulder Creek Path, this condo offers the ideal blend of convenience for students and lifestyle appeal for young professionals. Inside, the space lives larger than expected with vaulted ceilings, a large skylight that floods the home with natural light, and a versatile loft that adds flexibility for work or additional living space. A private deck and cozy wood-burning fireplace create the perfect balance of indoor-outdoor living and comfort year-round. Practicality meets opportunity with one reserved parking space and rare bonus storage-two dedicated storage lockers in the building's basement (most units include just one), plus an additional lofted storage area within the unit (not included in total square footage and not intended for sleeping). Whether you're looking for a smart investment near campus or a low-maintenance home base close to everything Boulder has to offer, this one checks all the boxes.
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| May 1, 2026 | Listed | $325,000 | |
| Listed | |||
| Dec 15, 2017 | Sold | ||
| Sold | |||
| Nov 16, 2017 | Listed by WK Real Estate | $295,000 | |
| Listed by WK Real Estate | |||
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Prime location for this sweet Boulder condo! Walk to CU, the Hill, Naropa, Pearl Street and the Boulder Creek Path. Great layout of space with vaulted ceilings, large skylight, loft, private deck, and wood burning fireplace. One reserved parking spot. Two separate storage lockers in the basement of the building (other units only have one), along with a community laundry. Additional storage loft not included in the total square footage. Additional storage loft not for sleeping purposes.
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Property Highlights
Comparables
Status
Price/ft²
Listed On
Sold On
Past Sales
| Date | Unit | Beds | Baths | Sqft | Price | Closed | Listed By |
|---|---|---|---|---|---|---|---|
|
05/01/2026
|
1 Bed
|
1 Bath
|
412 ft²
|
$325,000
1 Bed
1 Bath
412 ft²
|
-
-
|
Tara Armijo
Milehimodern
| |
|
05/06/2025
|
1 Bed
|
1 Bath
|
412 ft²
|
$339,500
1 Bed
1 Bath
412 ft²
|
-
-
|
Alex Jacobson
Compass - Boulder
| |
|
04/18/2024
|
1 Bed
|
1 Bath
|
462 ft²
|
$349,000
1 Bed
1 Bath
462 ft²
|
-
-
|
Karla Bielanski
RE/MAX of Boulder
| |
|
06/07/2023
|
1 Bed
|
1 Bath
|
440 ft²
|
$375,000
1 Bed
1 Bath
440 ft²
|
$367,500
-2.00%
07/07/2023
|
Brian Hellwig
RE/MAX of Boulder
| |
|
10/19/2022
|
1 Bed
|
1 Bath
|
412 ft²
|
$285,000
1 Bed
1 Bath
412 ft²
|
-
-
|
EmpowerHome Team Colorado
KELLER WILLIAMS REALTY NORTHERN COLORADO
| |
|
04/01/2021
|
1 Bed
|
1 Bath
|
441 ft²
|
$329,000
1 Bed
1 Bath
441 ft²
|
$324,000
-1.52%
06/21/2021
|
Stephanie N Watson
Porchlight RE Group-Boulder
| |
|
11/16/2017
|
1 Bed
|
1 Bath
|
440 ft²
|
$295,000
1 Bed
1 Bath
440 ft²
|
$295,000
12/15/2017
|
Craig Peterson
Resident Realty North Metro
| |
|
06/17/2016
|
1 Bed
|
1 Bath
|
512 ft²
|
$258,900
1 Bed
1 Bath
512 ft²
|
$258,900
11/29/2016
|
Jamie Zimmerman
RE/MAX Alliance-Boulder
| |
|
03/19/2013
|
1 Bed
|
1 Bath
|
440 ft²
|
$159,900
1 Bed
1 Bath
440 ft²
|
$153,500
-4.00%
05/03/2013
|
Judith Herr
Boulder Area Realty, LLC
| |
|
05/07/2012
|
1 Bed
|
1 Bath
|
440 ft²
|
$140,000
1 Bed
1 Bath
440 ft²
|
$142,500
+1.79%
08/14/2012
|
Mary Ellen Wood
Compass - Boulder
|
Building Info
Phone: 425-283-2930
Address: 335 Madison Avenue, New York, NY 10017