Here are few things you might want to consider:
Exterior: Check your foundation walls for cracks, heaving and crumbling.
Heating & Cooling: Oil burning equipment & heat pumps should be checked annually. Gas burning equipment can be serviced every other year.
Interiors: Check your roof for any signs of water stains, leaks, dampness and/or condensation.
Plumbing: Have your septic tank professionally drained and cleaned every two years.
Doors & Windows: Check for insulation on your doors & windows
Exterior: Clean gutters and make sure your downspouts direct water away from the foundation.
Roof: Check your vents and chimneys for squirrels, birds nest, or insects.