this is an exterior model which has no interiors... colours of the building can be changed in edit mode..
I have used an hdri for this type of lighting https://hdrihaven.com/hdri/?h=rooitou_park
textures have been used...if you dint get the textures after importing... it can be downloaded here at
cc0textures
https://ambientcg.com/view?id=Concrete017
https://ambientcg.com/view?id=Concrete031
https://ambientcg.com/view?id=Carpet012
https://ambientcg.com/view?id=Wood015
thats it hope you like it.. thanks...