What is the "rich" party of Brooklyn NY?

What neighborhood is considered a "rich" neighborhood in Brooklyn New York?|||Williamsburg is pretty trendy now.|||Park SlopeBrooklyn HeightsBoerum Hill/Cobble Hill Carroll Gardens (sometimes people call all 3 of these neighborhoods BoCoCa)Parts of WillamsburgEDIT: Kris confuses large buildings with "rich". Dyker Heights may have large houses, but it costs much more to buy a small apartment in Brooklyn Heights.The people in the northwestern brownstone neighborhoods have more money to spend on housing then people in the other parts of Brooklyn. That;s why they can afford to spend so much on small apartments.|||Dyker Heights, definitely