Naperville homeowners: what home repair issue surprised you the most?

I've noticed that owning a home often comes with small problems that don't seem serious at first but can turn into bigger projects if ignored.

For homeowners in Naperville, what is one repair or maintenance issue you didn't expect to deal with after moving in?

It could be anything like:

• Plumbing problems
• Basement moisture
• Older electrical systems
• HVAC maintenance
• Flooring repairs
• Seasonal weather-related issues
• Something else you wish you knew earlier

I'm curious to hear what other homeowners have experienced and what lessons you've learned along the way.

Hopefully this can help others know what to watch for before a small issue becomes a bigger one.