Where to sell my property (office space) online?

I have an office space of 1200 sq. feet’s on first floor of a building in New York. I need help to sell it and get the best deal possible. Can you name any community of portal where I can put my property for sale? Thanks a lot!

craig’s list? Why can’t you use an RE agent that specializes in the area?

If you have no idea what you’re doing [e.g. you’re a real estate newbie], get yourself a commercial real estate agent. If it were residential property, I would say go the Buy Owner or equivalent route first. But if you can find yourself something similar to the Buy Owner service - but for commercial property in New York - try that