Need help identifying this wasp/hornet
This looks like a European hornet Vespa crabro to me. Wasp-like appearance, red on head and thorax and base of the abdomen. And the legs are red/dark, not yellow.


Picture from wikipedia

Hornets can be aggressive, especially if you come near the nest. Usually, European hornets are actually not really interested in people (unlike other wasps). But if there are many around your house, it is likely the nest is near, so be careful and perhaps contact the owner of the house.