Block 10B in Karol Bagh is a residential area, but providing a precise description is difficult without more specifics. Karol Bagh itself is a bustling commercial and residential area in central Delhi. Block 10B, as a smaller residential section within it, likely shares some characteristics with the broader area but also has its own nuances. Predominantly residential, Block 10B likely consists of multi-storied buildings, possibly a mix of older structures and some newer constructions. The exact mix of apartment types and building ages would require more specific information. Expect a relatively high population density.