Maintenance tasks to consider are inspecting the crawlspace and attic for critters and unwanted moisture. Look for water marks on the roof that would be indicative of a leak. Or maybe areas in the insulation that looks like a nest which could mean a squirrel or rat has decided to live with you rent free.
In the crawlspace check for standing water and also critters like carpenter ants (photo above).
These little guys can do a lot of damage if gone unchecked so if you haven’t been in that crawlspace in quite awhile, grab your headlamp and coveralls and take a look.