Xbox One Valid housing?

[MySimplePixel]

I'm starting to build a nice tavern for the tavern keeper when consoles finally get that update. So I've started building it, but it's stating it's not valid housing and I can't work out why. I've tried adding normal tables and chairs. No luck. Any ideas?

Just in case the image didn't work:

https://mysimplepixel.co.uk/img_20181229_233125

Thanks for any help or ideas.

 

[TheDocisHere]

The building is too large it must contain less then 750 tiles of walls and back walls

 

[MySimplePixel]

The building is too large it must contain less then 750 tiles of walls and back walls

Oh really? Didn't know there was a 'too large'. Thank you! Will try to find out how to sort it