There is no specific community for HOUSE, but I highly recommend joining the Thinky Discord servers, there are a lot of cool people there you can talk to. They're also just really good places to discuss puzzles in general.
Thinky Puzzle Games: https://discord.gg/MZramVkeSr
Thinkygames.com: https://discord.com/invite/EtwnEMuyyT
Puzzle World: https://discord.gg/cH8SxxVV8f