Ask sellers for documentation on any major work they've done to the property. For example, if they put in a new drainage system, ask for copies of the work proposal and the paid invoice. This will be useful when it comes time for you to sell. If the roof was replaced recently, find out if the roofer will extend any remaining warranty to you. Also find out how much the utility bills are in an average summer and winter month.
Older homes require more maintenance than new homes.
This takes time and money. However, older homes often have more character and architectural distinctiveness than new homes. Older homes usually have mature landscaping and they are often more conveniently located. Older neighborhoods may also offer better schools. And, while older homes may need updating, they have withstood the test of time which is not the case with new homes.