Share This Listing

Message

944 characters remaining

Hmm, there seems to have been an error sending your message. Please try again.

Your email has been sent.

Still interested?

Contact the brokers for more information about this property

The Castro Building 43 W 23rd St 13,245 - 26,607 SF of Office Space Available in New York, NY 10010

Save this listing!

Favorite this listing to get notified of price updates, new media and more

All Available Spaces(2)

Display Rental Rate as

  • Space
  • Size
  • Term
  • Rental Rate
  • Space Use
  • Condition
  • Available
  • 3rd Floor
  • 13,245 SF
  • Negotiable
  • Upon Request Upon Request Upon Request Upon Request
  • Office
  • Full Build-Out
  • Now

This beautiful duplex features high ceilings, wood floors, and lots of natural light! An interconnected staircase makes the connection between the 3rd and 4th floors truly seamless. Fully furnished with private offices and meeting areas built. A large pantry area makes for an inviting and natural gathering point at the midpoint of each floor. The lobby is attended 24/7.

  • Listed rate may not include certain utilities, building services and property expenses
  • Mostly Open Floor Plan Layout
  • 3 Private Offices
  • Finished Ceilings: 12’ - 12’2”
  • Can be combined with additional space(s) for up to 26,607 SF of adjacent space
  • Elevator Access
  • High Ceilings
  • Natural Light
  • Open-Plan
  • Fully Built-Out as Standard Office
  • Fits 34 - 106 People
  • 3 Conference Rooms
  • Space is in Excellent Condition
  • Central Air and Heating
  • Private Restrooms
  • Exposed Ceiling
  • After Hours HVAC Available
  • Hardwood Floors
  • 4th Floor
  • 13,362 SF
  • Negotiable
  • Upon Request Upon Request Upon Request Upon Request
  • Office
  • Full Build-Out
  • Now

This beautiful duplex features high ceilings, wood floors, and lots of natural light! An interconnected staircase makes the connection between the 3rd and 4th floors truly seamless. Fully furnished with private offices and meeting areas built. A large pantry area makes for an inviting and natural gathering point at the midpoint of each floor. The lobby is attended 24/7.

  • Listed rate may not include certain utilities, building services and property expenses
  • Mostly Open Floor Plan Layout
  • 14 Private Offices
  • Finished Ceilings: 12’ - 12’2”
  • Can be combined with additional space(s) for up to 26,607 SF of adjacent space
  • Elevator Access
  • High Ceilings
  • Natural Light
  • Open-Plan
  • Fully Built-Out as Standard Office
  • Fits 34 - 107 People
  • 3 Conference Rooms
  • Space is in Excellent Condition
  • Central Air and Heating
  • Private Restrooms
  • Exposed Ceiling
  • After Hours HVAC Available
  • Hardwood Floors
Space Size Term Rental Rate Space Use Condition Available
3rd Floor 13,245 SF Negotiable Upon Request Upon Request Upon Request Upon Request Office Full Build-Out Now
4th Floor 13,362 SF Negotiable Upon Request Upon Request Upon Request Upon Request Office Full Build-Out Now

3rd Floor

Size
13,245 SF
Term
Negotiable
Rental Rate
Upon Request Upon Request Upon Request Upon Request
Space Use
Office
Condition
Full Build-Out
Available
Now

4th Floor

Size
13,362 SF
Term
Negotiable
Rental Rate
Upon Request Upon Request Upon Request Upon Request
Space Use
Office
Condition
Full Build-Out
Available
Now

3rd Floor

Size 13,245 SF
Term Negotiable
Rental Rate Upon Request
Space Use Office
Condition Full Build-Out
Available Now

This beautiful duplex features high ceilings, wood floors, and lots of natural light! An interconnected staircase makes the connection between the 3rd and 4th floors truly seamless. Fully furnished with private offices and meeting areas built. A large pantry area makes for an inviting and natural gathering point at the midpoint of each floor. The lobby is attended 24/7.

  • Listed rate may not include certain utilities, building services and property expenses
  • Fully Built-Out as Standard Office
  • Mostly Open Floor Plan Layout
  • Fits 34 - 106 People
  • 3 Private Offices
  • 3 Conference Rooms
  • Finished Ceilings: 12’ - 12’2”
  • Space is in Excellent Condition
  • Can be combined with additional space(s) for up to 26,607 SF of adjacent space
  • Central Air and Heating
  • Elevator Access
  • Private Restrooms
  • High Ceilings
  • Exposed Ceiling
  • Natural Light
  • After Hours HVAC Available
  • Open-Plan
  • Hardwood Floors

4th Floor

Size 13,362 SF
Term Negotiable
Rental Rate Upon Request
Space Use Office
Condition Full Build-Out
Available Now

This beautiful duplex features high ceilings, wood floors, and lots of natural light! An interconnected staircase makes the connection between the 3rd and 4th floors truly seamless. Fully furnished with private offices and meeting areas built. A large pantry area makes for an inviting and natural gathering point at the midpoint of each floor. The lobby is attended 24/7.

  • Listed rate may not include certain utilities, building services and property expenses
  • Fully Built-Out as Standard Office
  • Mostly Open Floor Plan Layout
  • Fits 34 - 107 People
  • 14 Private Offices
  • 3 Conference Rooms
  • Finished Ceilings: 12’ - 12’2”
  • Space is in Excellent Condition
  • Can be combined with additional space(s) for up to 26,607 SF of adjacent space
  • Central Air and Heating
  • Elevator Access
  • Private Restrooms
  • High Ceilings
  • Exposed Ceiling
  • Natural Light
  • After Hours HVAC Available
  • Open-Plan
  • Hardwood Floors

Features and Amenities

  • Bus Line
  • Metro/Subway

Property Facts

Building Type
Office
Year Built/Renovated
1903/1989
Building Height
8 Stories
Building Size
122,517 SF
Building Class
B
Typical Floor Size
12,000 SF
Unfinished Ceiling Height
12’
Parking
Surface Parking
Covered Parking

Select Tenants

  • Floor
  • Tenant Name
  • Industry
  • 5th
  • Barclays Innovation
  • Finance and Insurance
  • 7th
  • Lord Cultural Resources Plan
  • Professional, Scientific, and Technical Services
  • 2nd
  • Market IQ
  • Professional, Scientific, and Technical Services
  • GRND
  • Realblocks
  • Finance and Insurance
  • Multiple
  • Spectrum
  • Information
Walk Score®
Walker's Paradise (98)
Transit Score®
Rider's Paradise (100)
Bike Score®
Biker's Paradise (92)
What is a Walk Score®, Transit Score® & Bike Score®?
Walk Score® measures the walkability of any address.
Transit Score® measures access to public transit.
Bike Score® measures bikeability of a location.
What is a Walk Score®
, Transit Score® & Bike Score?
Walk Score® measures the walkability
of any address. Transit Score®
measures access to public transit. Bike Score®
measures bikeability of a location.®
  • Listing ID: 39302819

  • Date on Market: 2/3/2026

  • Last Updated:

  • Address: 43 W 23rd St, New York, NY 10010

Link copied
Your LoopNet account has been created!

Please Share Your Feedback

We welcome any feedback on how we can improve LoopNet to better serve your needs.
X
{{ getErrorText(feedbackForm.starRating, "rating") }}
255 character limit ({{ remainingChars() }} charactercharacters remainingover)
{{ getErrorText(feedbackForm.msg, "rating") }}
{{ getErrorText(feedbackForm.fname, "first name") }}
{{ getErrorText(feedbackForm.lname, "last name") }}
{{ getErrorText(feedbackForm.phone, "phone number") }}
{{ getErrorText(feedbackForm.phonex, "phone extension") }}
{{ getErrorText(feedbackForm.email, "email address") }}