The Grip of It by Jac Jemc (2017)

Julie and James have recently bought a beautiful old home in the suburbs for an amazing price. But there's a few mysterious things they discover about the house--a strange sound they can't identify, mysterious secret compartments, their very unfriendly neighbor. And then things get even worse. 

Jemc does a beautiful job of establishing a truly creepy atmosphere and ramping things up without taking things too far. Very vivid and compelling. Also, this is one of the best horror covers ever. Matches the story perfectly!