This is a 1950s post apocalyptic novel about everyone in the world other than the protagonist turning into vampires. The main character is living in his house, and has burnt the surrounding houses to the ground. Each night vampires bang on his walls and call out for him. His neighbour in particular calls for him by name over and over.
He discovers a woman near the end of the book, and brings her to his house. It wasn’t much of a surprise to me that she was a vampire pretending to be human, and I thought their relationship made a very quick about turn that I found unbelievable. The ending reveal though that there is a new society of vampire people who can keep it under control who view him as their bogeyman I thought was very well done.
Wikipedia says that this was an influence for Night of the Living Dead, which sounded obvious as soon as I read it despite not realising at the time. The vampires quite often are very zombie like and the scenario of being trapped in a house with them banging on the walls is a direct parallel.