It depends on various conditions, such as the family status ('kakaku'), the length of the history of a family, and a question of whether a family was close to the Edo bakufu or the emperor (some kuge nobles called 'jikkon shu' [literally, people on friendly terms] had large 'keryo' landholdings even if their family status was not high.)
これは家格や家自体の新旧、江戸幕府や天皇との親疎による（昵懇衆とされた公家は家格が低くても家領は多い）。