Another simple measure you can take to make your house more rainproof is putting a treshold in front of your door. It takes a bit more effort than watering a plant every now and then, but can be a very good emergency measure.
During a heavy rainfall event the water will flow to the lowest part of the street, and that might even be your house! To make sure that the water will not flow into your house, you can make a high threshold. You can read the story of Marleen Doodkorte here.
© Merlijn Michon
You can even make the threshold stronger with some sand bags.This solution is a last minute solution, you could for instance put the threshold there when you heard on the weather forecast that it might rain heavily. The threshold could be built by a carpenter, but if you are really handy, you could even do it yourself.