National Union Building

National Union Building - Event Venue in Washington, District of Columbia

Event Space · Washington, District of Columbia

918 F Street Northwest, Washington, District of Columbia, United States

About National Union Building

The National Union Building is a historic 7-floor event venue in downtown Washington, DC, offering 27,000 square feet of flexible space across 11 private event rooms, including a hidden speakeasy. Built in 1890, this Romanesque Revival landmark blends original architectural details with modern amenities, making it ideal for corporate events, social gatherings, weddings, and more.

Venue Details

  • Meeting rooms: 10
  • Year built: 1890

Ratings

Google Rating: 4.6/5 (231 reviews)

Guest Highlights

  • Team
  • Space
  • Event
  • Staff
  • Venue
  • Catering
  • Celebration
  • Food

Amenities

Equipment

  • built-in AV tech

Facilities

  • demo kitchen
  • hidden speakeasy

Room Features

  • natural light
  • vaulted ceilings
  • exposed brick
  • cathedral-like ceilings
  • historic charm
  • period details
  • built-in AV

Guest Services

  • valet

Meeting Rooms & Event Spaces

1st Floor North

  • Type: Multi Purpose
  • Size: 510 sq ft
  • Capacity — Cocktail: 50
  • Features: Wheelchair accessible, historic molded ceilings, brick walls, warm lighting
  • An intimate lounge featuring original molded ceilings, exposed brick walls, and moody ambient lighting. Ideal for cocktail-style receptions, welcome lounges, or small private events.

2nd Floor North

  • Type: Multi Purpose
  • Size: 768 sq ft
  • Capacity — Cocktail: 50
  • Features: Natural light, Wheelchair accessible, arched windows, tin ceilings, period architectural details
  • Bright and inviting space with arched windows, tin ceilings, and a carved mantle. Ideal for dinners, receptions, and networking events.

2nd Floor South

  • Type: Multi Purpose
  • Size: 1,043 sq ft
  • Capacity — Classroom: 50, Banquet: 80, Cocktail: 120
  • Features: Built-in AV, Wheelchair accessible, exposed brick, decorative tin ceiling, built-in projector, screen
  • Versatile space with exposed brick, silver tin ceilings, soft lighting, and built-in projector and screen. Ideal for business meetings, speaker panels, or private dinners.

3rd Floor North (Taste of DC’s Demo Kitchen)

  • Type: Private Dining
  • Size: 1,282 sq ft
  • Capacity — Banquet: 50, Cocktail: 150
  • Features: Wheelchair accessible, demo kitchen, prep area
  • Interactive culinary space perfect for cooking classes, tastings, and team-building experiences. Fully equipped demo kitchen and prep area.

4th Floor North

  • Type: Multi Purpose
  • Size: 768 sq ft
  • Capacity — Classroom: 100, Banquet: 120, Cocktail: 150, Hollow Square: 66
  • Features: Natural light, Built-in AV, Wheelchair accessible, dual ceiling-mounted projectors, butler’s pantry, window nooks
  • Elevated venue with original light fixtures, exposed brick, and natural light through oversized windows. Equipped with dual ceiling-mounted projectors and a butler’s pantry.

4th Floor South

  • Type: Multi Purpose
  • Size: 1,045 sq ft
  • Capacity — Classroom: 50, Banquet: 70, Cocktail: 120
  • Features: Built-in AV, Wheelchair accessible, ceiling-mounted projector, butler’s pantry, window alcoves
  • Functional and elegant space with ceiling-mounted projector, butler’s pantry, and inviting window alcoves. Ideal for trainings, networking, or small group events.

4th Entire Floor (Combined North & South)

  • Type: Multi Purpose
  • Size: 2,305 sq ft
  • Capacity — Banquet: 140, Cocktail: 220
  • Features: Wheelchair accessible
  • Full 4th floor space, perfect for large receptions, conferences, or social celebrations with a blend of elegance and flexibility.

5th Floor Conference Room

  • Type: Conference Room
  • Size: 1,225 sq ft
  • Capacity — Boardroom: 25, Cocktail: 45
  • Features: Natural light, Wheelchair accessible, main room, three breakout rooms, professional ambiance
  • Quiet, elevated space overlooking Penn Quarter, perfect for board meetings or focused breakout sessions. Main room with three adjacent breakout rooms.

6th Floor North

  • Type: Multi Purpose
  • Size: 1,093 sq ft
  • Capacity — Banquet: 120, Cocktail: 180
  • Features: Natural light, Wheelchair accessible, vaulted ceiling, original timber, tall windows
  • Dramatic space with cathedral-style vaulted ceilings and original timber details. Elegant by day, striking by night. Tall windows and natural light.

6th Floor South

  • Type: Multi Purpose
  • Size: 1,266 sq ft
  • Capacity — Theater: 180, Banquet: 150, Cocktail: 200
  • Features: Built-in AV, Wheelchair accessible, dual projectors, window alcoves, wood flooring
  • Spacious and flexible top-floor venue featuring historic charm, dual projectors, and elegant wood flooring. Light-filled and perfect for both daytime and evening events.

Style

historic, elegant, urban

Contact

Phone: (888) 904-3674