Housing is generally nice, very little vacant or abandoned properties. Cost is high because it is one of Boston's most desirable neighborhoods, school district is one of the best so many people move here for the schools. There isn't a "bad" area to live in Brookline, if anything, I would say avoid Beacon street, for the noise level, it's a major thoroughfare into Boston. Best areas if amenities are key, Brookline Village, Washington Square, Coolidge Corner. Best areas if yard/property is key, many properties may be found in the south, south-west part of Brookline county lines. But there are also large (expensive) properties closer to Boston that are hidden in the center of blocks (dead end streets that go to the interior of the block).