We built our own house approx ten years ago ( then sold it and moved here!).
We had very low light sensor lights in our hall and ensure, so you could get up in the night and walk to the toilet or kitchen without turning the lights on. It was great but I always got a huge fright when DH was working nights and the cat set the lights off!
Open plan kitchen, dining, lounge leading to outdoor deck. Oh and a sea view is must!