Keep a list of major works and purchases.
Then you can refer to it in the future and see, "Oh yes that plumber did a good job, the other one didn't, we'll call the first one." Or, "We haven't had the gutters cleaned for 5 years, better get round to it." Or, "Bought the dishwasher 15 years ago, not worth repairing it."
If you have a good memory you might not need this, but if you don't..