Here is an interesting article from HouseLogic.com on the value of maintaining your home:

If you think home maintenance is an unavoidable series of weekend-eating chores, remember the age-old advice of Benjamin Franklin: "An ounce of prevention is worth a pound of cure." The fact is, proactive maintenance is essential to preserving the value of your home-without it, your home could lose 10% of its value. Regular, routine maintenance enhances curb appeal, ensures safety, and prevents neglected upkeep from turning into costly major repairs.

...

"It's the little things that tend to trip up people," says Frank Lesh, former president of the American Society of Home Inspectors and owner of Home Sweet Home Inspection Co. in Chicago. "Some cracked caulk around the windows, or maybe a furnace filter that hasn't been changed in awhile. It may not seem like much, but behind that caulk, water could get into your sheathing, causing mould and rot. Before you know it, you're looking at a $5,000 repair that could have been prevented by a $4 tube of caulk and a half hour of your time."

Read the entire article at HouseLogic.com articles