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Cooperative Residential Property with Solarium
For Sale
$219,000

3900 CATHEDRAL AVE NW #609A, Washington, DC 20016

WASHINGTON, DC

Property Size1,100 SF
Price / SF$199.09
Days on Market97

Property Features for 3900 CATHEDRAL AVE NW #609A

General Information

Property type Residential Multi Family
Property subtype Other
Bedrooms 1
Bathrooms 1
Full bathrooms 1
Rooms Bedroom 1
Subdivision OBSERVATORY CIRCLE
Elementary school district DISTRICT OF COLUMBIA PUBLIC SCHOOLS
Middle school district DISTRICT OF COLUMBIA PUBLIC SCHOOLS
High school district DISTRICT OF COLUMBIA PUBLIC SCHOOLS
Standard status Active

Amenities

Concierge desk
Westchester Market
Valet
Guest Suites
Fitness Center
Library
onsite parking
Service Department
24/7 security personnel

Building Details

Year built 1931
Listing Agency: Chevy Chase Circle
Listed By: Stan Watters
Added: Jul 2 Changed: Aug 23 Last Checked: Oct 6 at 8:06PM
MLS# DCDC2271252

Copyright © 2026 Long & Foster Real Estate. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.

Investment Insights

Based on property information with market context.

Apartment 609-A is a 1,100-square-foot cooperative residence at the Westchester, a 1931 property with Art Deco detailing and landscaped communal grounds. The one-bedroom, one-bath layout includes a spacious living room, separate solarium, study, bedroom with a walk-in closet, and an additional cedar-lined clothes closet. High ceilings and northern and western exposures add to the interior character, while the solarium provides a direct view of the National Cathedral. The study may serve as a dining area or guest bedroom, subject to the buyer’s plans.

The cooperative fee covers property tax, utilities, landscaping, grounds maintenance, and 24/7 security personnel. Building services and amenities include concierge service, a market with deli, dry-cleaning valet, guest suites, fitness center, library, onsite parking, and resident maintenance assistance. Cathedral Commons, Foxhall Square, and Metro Bus service along Cathedral Avenue are nearby.

Key Highlights

  • 1,100‑square‑foot 1‑bedroom/1‑bath cooperative residence
  • Separate solarium with northern and western exposures and a direct view of the National Cathedral
  • High ceilings, large living room, study, walk‑in closet, and cedar‑lined clothes closet

Financial Insights

Estimated NOI and Cap Rate

NOI / Yr
$18,277
Cap Rate
8.35%
Suggested Prices Based on Cap Rates
Cap Rate 5%
$365,540 $365.5K
Cap Rate 7%
$261,100 $261.1K
Cap Rate 9%
$203,078 $203.1K
Market Conditions
NOI Build-Up for 1,100 SF
Gross rent
$35.0K $31.80/SF
− Vacancy
−$1.7K −$1.59/SF
EGI
$33.2K $30.21/SF
− OpEx
−$15.0K −$13.59/SF
NOI
$18.3K $16.62/SF
Area
Washington, DC
Vacancy
5.00%
Lease Rate
$31.80 /SF/Yr
Expense Ratio
45.00%
Simulate Cap Rate and NOI
Suggested Prices Based on Cap Rates
Cap Rate 5%
$365,540
Cap Rate 7%
$261,100
Cap Rate 9%
$203,078

Alternative Uses

Best Use
Apartment 5plus
$261.1K
$228.5K – $304.6K (±1% cap)
NOI $18,277 @ 7.0% cap · market cap 8.35%
Second Best
—
—
no second resolved use
Theoretical Best
Office A
$565.8K
$495.1K – $660.1K (±1% cap)
NOI $39,606 @ 7.0% cap · market cap 18.08%
Zoning and permitted uses should be independently verified with authorities.

Property Analytics

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Current Use

Residential income properties

Suggested Use

Top Pick Nail Salon Hair Salon Spa & Massage Center Bakery Barber Shop Big Box & Wholesale Store

Score = modeled unmet demand for each use within ~1 mi (higher = bigger opportunity). Zoning and permitted uses should be independently verified with local authorities.

Lease Details

1
Residential units

Location Intelligence

Trade Area within ½ mile

1,349
Businesses Nearby

Demographics for 20016, DC

35,068
Population
15,457
Households
2.3
Avg Household Size
37
Median Age
88%
College-Educated
99%
High-School Grad
4.4 sq mi
ZIP Area
7,970
Density / Sq Mi
$179,107
Median Household Income
$104,275
Median Earnings
$2,105
Median Rent
$1,206,200
Median Home Value
Check the figures for this property Cap Rate, Value Estimation, Potential NOI and more
View Realmo Analytics
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Frequently Asked Questions

What type of property is this?
Residential income property - Art Deco cooperative residence with flexible interior space, elevated ceilings, extensive services, and a direct National Cathedral outlook.
Where is this residential income property located?
The property is located at 3900 CATHEDRAL AVE NW #609A Washington, DC.
What is the asking price?
The asking price for this property is $219,000.
What are key features of this property?
This property features: 1,100‑square‑foot 1‑bedroom/1‑bath cooperative residence; Separate solarium with northern and western exposures and a direct view of the National Cathedral; High ceilings, large living room, study, walk‑in closet, and cedar‑lined clothes closet
More about this property
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