This is due to the fact that most mobile homes have very little space between the ceiling and roofing so the manufacturers figure why bother with it however there is enough room up there for a little storage or attic access for repair.
Do most houses have an access panel to the attic.
If the access panel is locked nailed or caulked shut then ask the seller to get it opened for you.
It s against most building codes to vent anything into the attic plus if warm moist air is released into the attic again you re going to have a problem with mould.
So you should not consider buying a house that has no way to get into the attic.
The attic area does have sufficient room for moderate storage or to access for the purpose of running wires and installing various ceiling fixtures.
Opening the ceiling to gain access is not a difficult process.
Most homes have a panel that lifts up and slides to the side to get into the attic.
There is usually mitered casing around the edge to hold the panel up in the air.
Manufactured houses do not usually have attic access because of the limited space between the ceiling and roof.
But otherwise get the seller.
Also the access may a small door the wall of an upper story room or high in the wall between the garage and house.
Sometimes a home inspector will open a secured panel if the seller gives permission and holds the inspector harmless for any damage.
Interestingly most manufactured homes do not come with an attic access for new homeowners.
Some very old homes have attic access only through a removable vent panel at a gable end wall of the roof.