Question for you. Will your new purchase be contingent on the sale of your current apartment? If so, it would probably be good idea to put your apartment on the market and then start looking, not vise versa.
Which neighberhood would be your ideal? You listed 9 different areas going from Queens to Brooklyn and Bronx.
How large is your current apartment, and how large would you like your next apartment to be? There are several coops in Kensington and Ditmas park fo runder $400K which are two bedrooms. There is a big difference between a 1 and a two.
I actually have a closing at 350 Ocean Parkway, Ave C where I was able to negotiate down to well under $240K.
If you can be more specific and would like to email me, chances are good that we can go out and look at several properties.
All of my information is listed in my profile.
I am a Manhattan based broker so I don't have the type of expertise you are going to need to coordinate the sale of your apartment in Brooklyn, and at same time locating the type of unit you are describing. What I can do is put you in touch with an agent that specializes in those neighborhoods that you are looking in. Is that something that interests you? If it does feel free to email me and I will put you in touch with the people who can help you both sell and find a new apartment.
Prudential Douglas Elliman