I currently live with my mother in her council house. I am a lodger here. There are 4 rooms - I have one big room, and a spare room will be for my daughter

We have written to the Council asking for permission for my wife to stay in the property and my mum has also written a letter asking permission for her to stay in the house, as she wants to see her grandaughter she not seen yet

What else can I provide so the visa will be granted?

Is a property inspection report from Council or an agency needed?