Wow, some really cringe worthy advice in this thread. First in foremost, my family has been in the mobile home moving and setup business since the 70s. The price range for leveling a single wide will run you from 450 to 600 doubles 750 to 900. You need to be licensed and bonded and should have a insurance. Don’t let joe blow with a stick level, level your house. The frames must be level with themselves in order to protect the integrity of the frame most importantly and truly that’s the only way to keep a house level, not by adjusting the level of the flooring…jeezzzzz wow. A water level is THE MOST efficient way to level a mobile home because you are leveling the blocks under the frame, not the structure of the home!!! All mobile homes need to be checked for leveling every few years, They all settle and move. Very very rarely they will sit level over a ten or twenty year span, but don’t check at your own peril. Ive raised houses up to two or more feet from one end to the other, yes that’s for frame bending that far! It’s a floating system, they will move and settle… period. If your on blackland prairie type soil, (black gumbo) you better check every other year, very expansive soil type.