1701 18th St NW, Unit 401

Washington, DC 20009

$1,699,900
Price
3
Beds
1,641 Sq. Ft.
$1,036 / Sq. Ft.
1,641
Sq. Ft.
$1,036
per Sq. Ft.
Get preapproved with Rocket Mortgage1

Description

The Duncan Penthouse | Where Historic Charm Meets Modern Urban Living
Experience boutique living at its best in this rare two-level, three-bedroom, three-bath penthouse at The Duncan, an exclusive nine-residence condominium steeped in architectural history. Originally built in 1906 by Hornblower & Marshall and reimagined for contemporary living, The Duncan offers a perfect balance of timeless craftsmanship and modern sophistication. Residence 401 impresses from the moment you enter — with 15-foot...The Duncan Penthouse | Where Historic Charm Meets Modern Urban Living

Experience boutique living at its best in this rare two-level, three-bedroom, three-bath penthouse at The Duncan, an exclusive nine-residence condominium steeped in architectural history. Originally built in 1906 by Hornblower & Marshall and reimagined for contemporary living, The Duncan offers a perfect balance of timeless craftsmanship and modern sophistication. Residence 401 impresses from the moment you enter — with 15-foot vaulted ceilings, dramatic natural light from three exposures and skylights, and warm maple flooring throughout. The spacious living area centers around a wood-burning fireplace, creating the perfect backdrop for elegant entertaining or quiet evenings at home. The chef's kitchen showcases Sub-Zero and Wolf appliances, wrap-around cabinetry, and expansive prep space, seamlessly connecting to the living and dining areas. Two wet bars, each with a wine cooler — one on the main level and another off the private roof terrace — make entertaining effortless indoors or out. The primary suite offers a serene escape with radiant-heated bathroom floors, generous closets, and abundant natural light. Two additional bedrooms and full baths provide flexible space for guests, work, or leisure. Enjoy panoramic city views from your private roof deck — ideal for al fresco dining or sunset cocktails. Additional amenities include secure garage parking, private storage, in-unit laundry, elevator access, and pet-friendly living. Perfectly positioned in the heart of Dupont Circle, The Duncan Penthouse puts you steps from the Red Line Metro, acclaimed restaurants, cafés, shops, and vibrant nightlife. With a Walk Score of 98, this penthouse combines rare privacy, refined scale, and one of DC's most coveted addresses.
  1. Listed by Christopher R Sanders • Century 21 Redwood Realty
    P: (703)-447-0440 chris@chrissandersgroup.com

Property Details for 1701 18th Street Northwest, Unit 401

Tax ID Number
0153//2076
Ownership
Condominium
Condo Coop Association
Yes
HOA
No
Entry Floor Number
1
Structure Type
Unit/Flat/Apartment
Style
Federal
Levels/Stories
2
LISTING UPDATED: 04/22/2026 08:07 PM

Property Details for 1701 18th Street Northwest, Unit 401

StatusActive
MLS #DCDC2250474
Days on Market40
Taxes$11,525 / year
HOA Fees-
Condo/Co-op Fees$1,061 / month
Property TypeCondo
MLS TypeResidential / Condo
Year Built1906
CountyDistrict of Columbia
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Location

Listing Courtesy of Century 21 Redwood Realty
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Building Information for 1701 18th Street Northwest, Unit 401

Building/Complex1701 18th St NWFloor-Stories2Residences9Pet Policy-Pet Policy DetailsCats OK,Dogs OKYear Built1906

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$10,581 per month

30 year fixed, 6.46% Interest

Principal and Interest

$8,560

Property Taxes

$960

HOA Dues

$1,061

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Property Information for 1701 18th Street Northwest, Unit 401

Location
Location
  • In City Limits: Yes
  • Transportation: Airport less than 10 miles, Bus Stop less than 1 mile, Metro/Subway Station less than 1 mile
  • School District Name: DISTRICT OF COLUMBIA PUBLIC SCHOOLS
  • School District County ID: 121140357950
  • SchoolDistrictSource: 3rd Party
  • Elementary School: ROSS (WASHINGTON DC)
  • ElementarySchoolSource: Listing Agent
  • High School: CARDOZO EDUCATION CAMPUS (WASHINGTON DC)
  • HighSchoolSource: Listing Agent
  • County: WASHINGTON
Waterfront / Water Access
Waterfront / Water Access
  • Water View: No
  • Water Access: No
  • Water Oriented: No
  • Navigable Water: No
  • Tidal Water: No
  • Riparian Rights Y/N: No
Association / Community Info
Association / Community Info
  • Condo Coop Name: The Duncan
  • HOA Condo Coop Mgmt Type: Professional - Off-site
  • HOA Condo Coop Fee Includes: Common Area Maintenance, Ext Bldg Maint, Insurance, Lawn Maintenance, Management, Reserve Funds, Sewer, Trash, Water
  • HOA Condo Coop Amenities: Common Grounds, Elevator
  • Property Manager Y/N: Yes
  • Senior Community: No
  • Association Recreation Fee Y/N: No
  • Type of Condo: Condo/Coop Association
Taxes and Assessment
Taxes and Assessment
  • Tax Year: 2025
  • Tax Assessed Value: $1,459,970
  • Year Assessed: 2025
  • Improvement Assessed Value: $1,021,980
  • City Town Tax: $11,525
  • Land Assessed Value: $437,990
  • Clean Green Assessed: No
  • Municipal Trash: No
  • Loss Mitigation Fee: No
  • Agricultural Tax Due: No
  • Historic: No
  • Zoning: RES
  • Tax Lot: 2076
  • Automatically Update Tax Values Y/N: Yes
Lease Information
Lease Information
  • Pets Allowed: Yes
  • Pet Restrictions: Cats OK, Dogs OK
Rooms
Main
  • # Bedrooms Count Main Level: 2
  • # Bathrooms Count Main Level: 2
  • # Bathrooms Full Main Level: 2
  • # Bathrooms Half Main Level: 0
All Upper Levels
  • # Bedrooms Count All Upper Levels: 1
  • # Bathrooms Count All Upper Levels: 1
  • # Bathrooms Full All Upper Levels: 1
  • # Bathrooms Half All Upper Levels: 0
Upper Level 1
  • # Bedrooms Count Upper Level: 1
  • # Bathrooms Count Upper Level: 1
  • # Bathrooms Full Upper Level: 1
  • # Bathrooms Half Upper Level: 0
Rooms
  • Room List: Living Room, Dining Room, Primary Bedroom, Bedroom 2, Kitchen, Bedroom 1, Bathroom 1, Bathroom 2, Primary Bathroom
  • Stories: Main, Upper 1
Rooms Information
Room 1
  • Room Type: Living Room
  • Room Length: 20.0
  • Room Width: 18.0
  • Room Level: Main
  • Room Exists: Yes
  • Room Features: Flooring - HardWood, Fireplace - Wood Burning
Room 2
  • Room Type: Dining Room
  • Room Length: 13.0
  • Room Width: 23.0
  • Room Level: Main
  • Room Exists: Yes
  • Room Features: Flooring - HardWood
Room 3
  • Room Type: Kitchen
  • Room Length: 8.0
  • Room Width: 19.0
  • Room Level: Main
  • Room Exists: Yes
  • Room Features: Flooring - HardWood
Room 4
  • Room Type: Primary Bedroom
  • Room Length: 13.0
  • Room Width: 13.0
  • Room Level: Main
  • Room Exists: Yes
  • Room Features: Flooring - HardWood
Room 5
  • Room Type: Primary Bathroom
  • Room Length: 5.0
  • Room Width: 12.0
  • Room Level: Main
  • Room Exists: Yes
  • Room Features: Flooring - Tile/Brick
Room 6
  • Room Type: Bedroom 1
  • Room Length: 9.0
  • Room Width: 11.0
  • Room Level: Main
  • Room Exists: Yes
  • Room Features: Flooring - HardWood
Room 7
  • Room Type: Bathroom 1
  • Room Length: 5.0
  • Room Width: 9.0
  • Room Level: Main
  • Room Exists: Yes
  • Room Features: Flooring - Tile/Brick
Room 8
  • Room Type: Bedroom 2
  • Room Length: 10.0
  • Room Width: 25.0
  • Room Level: Upper 1
  • Room Exists: Yes
  • Room Features: Flooring - HardWood
Room 9
  • Room Type: Bathroom 2
  • Room Length: 8.0
  • Room Width: 4.0
  • Room Level: Upper 1
  • Room Exists: Yes
  • Room Features: Flooring - Tile/Brick
Building Info
Building Info
  • Total Finished SQFT: 1,641.00
  • Total Finished SQFT Source: Assessor
Lot / Land Information
Lot / Land Information
  • Soil Types: Urban Land-Sassafras-Chillum
  • Parcel ID: 16154281
  • Additional Parcels: No
Parking
Parking
  • Type Of Parking: Attached Garage
  • Num of Attached Garage Spaces: 1
  • Total Garage Spaces: 1
  • Garage Features: Additional Storage Area, Basement Garage, Garage - Side Entry
Interior Features
Interior Features
  • Interior Features: Bar, Built-Ins, Ceiling Fan(s), Entry Level Bedroom, Formal/Separate Dining Room, Kitchen - Gourmet, Primary Bath(s), Skylight(s), Spiral Staircase, Walk-in Closet(s), Window Treatments, Wood Floors
  • Fireplace: Yes
  • Fireplaces Count: 1
  • Fireplace Features: Mantel(s)
  • Appliances: Built-In Microwave, Dishwasher, Disposal, Dryer, Range Hood, Refrigerator, Stainless Steel Appliances, Washer, Water Heater
  • Accessibility Features: 32"+ wide Doors
  • Security Features: Main Entrance Lock
  • Window Features: Energy Efficient, Double Pane
  • Laundry Type: Main Floor, Washer In Unit, Dryer In Unit
  • Virtual Tour URL Unbranded: https://listings.peterpapoulakos.com/sites/aegpoza/unbranded
Exterior Features
Exterior Features
  • Spa: No
  • Pool: No Pool
  • Horse: No
Utilities
Utilities
  • Heating: Yes
  • Cooling Type: Central A/C, Ceiling Fan(s)
  • Cooling Fuel: Electric
  • Heating Type: Forced Air
  • Heating Fuel: Natural Gas
  • Hot Water: Natural Gas
  • Water Source: Public
  • Sewer Septic: Public Sewer
Confidential Data
Listing Office
  • List Agent AOR: Greater Capital Area Association of REALTORS
  • List Agent URL: www.ChrisSandersGroup.com

Property History for 1701 18th Street Northwest, Unit 401

DateEvent & SourcePriceAppreciation
Mar 19, 2026

Withdrawn

BRIGHT #DCDC2222528

—
Mar 19, 2026

Listed (Active)

BRIGHT #DCDC2250474

$1,699,900—
Dec 19, 2025

Temp Off Market

BRIGHT #DCDC2222528

—
DateEvent & SourcePrice
03/19/2026

Withdrawn

BRIGHT #DCDC2222528

—
03/19/2026

Listed (Active)

BRIGHT #DCDC2250474

$1,699,900
12/19/2025

Temp Off Market

BRIGHT #DCDC2222528

—

For completeness, Compass often displays two records for one sale: the MLS record and the public record.

Public Records for 1701 18th Street Northwest, Unit 401

Taxable ValueLand$438,430Additions$1,023,000Total$1,461,430
Tax Record2025$11,525 ($960 / month)
Home Facts
Beds3Baths3Total Finished SqFt1,641 SqFtAbove Grade Finished SqFt1,641 SqFtLot Size596 SqFtStyleCondominiumYear Built1906Year Renovated2006CountyDISTRICT OF COLUMBIAAPN0153 2076Fireplace TypeHas Fireplace

Schools near 1701 18th Street Northwest, Unit 401

This home is within District Of Columbia Public Schools.
Rating
School
Type
Grades
Distance
Ross Elementary School
Public - PK to 5
Cardozo Education Campus
Public - 6 to 12
Benjamin Banneker High School
Public - 9 to 12
School Without Walls High School
Public - 9 to 12
Rating
School
Distance
Ross Elementary School
PublicPK to 5

Cardozo Education Campus
Public6 to 12

Benjamin Banneker High School
Public9 to 12

School Without Walls High School
Public9 to 12

School ratings and boundaries are provided by GreatSchools.org and Pitney Bowes. This information should only be used as a reference. Proximity or boundaries shown here are not a guarantee of enrollment. Please reach out to schools directly to verify all information and enrollment eligibility.

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More information about 1701 18th Street Northwest, Unit 401, Washington, DC 20009

1701 18th Street Northwest, Unit 401 is a condo for sale in Washington, DC 20009. This property was listed for sale on March 19, 2026 by Century 21 Redwood Realty, it's currently listed at $1,699,900. It has been on the market for a total of 40 days and was last sold on March 16, 2018. This listing's school district is District Of Columbia Public Schools. Nearby schools include Ross Elementary School, Cardozo Education Campus and Benjamin Banneker High School. 1701 18th Street Northwest, Unit 401 is a 3-bed, 3-bath, 1,641 sqft condo built in 1906.

No guarantee, warranty or representation of any kind is made regarding the completeness or accuracy of descriptions or measurements (including square footage measurements and property condition), such should be independently verified, and Compass, Inc., its subsidiaries, affiliates and their agents and associated third parties expressly disclaims any liability in connection therewith. Photos may be virtually staged or digitally enhanced and may not reflect actual property conditions. Offers of compensation are subject to change at the discretion of the seller. No financial or legal advice provided. Equal Housing Opportunity.

Listing Courtesy of Century 21 Redwood Realty

© 2026 Bright MLS. All rights reserved. All information is deemed reliable, but accuracy is not guaranteed. Listing information is from various brokers who participate in IDX and not all listings may be visible on the site. The property information being provided is for the consumer’s personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Data last updated on 04/22/2026 08:07 PM