Yup… apparently. 
You mentioned that it was a small house and that the walls would be opened up. For me this means that it would not be a big deal to put some Ethernet cable in place. This can take care of network and power if you want (we have recently been exchanging around this idea in another thread).
I certainly wouldn’t say that it is massively flaky… but it is a relatively complex system with a lot of parts to it.