3D Environment Textures

I want the models and textures for the the 3D environment to be mostly very slummy looking. I want them to look like they have been poorly constructed and vandilised. This would mean some buildings having corners that aren't perpendicular; pathways with lots of cracks in them; graffiti on buildings; buildings that look like they have been either abandoned or broken into.

Here are some textures I have been using thus far:

This is a steel texture used on the poles for the Basketball court and to be used on lightposts

This is an asphalt texture that was used for the Basketball court surface and for roads

This is a stone texture that was used for stepping stones in the Apartment area. The stones were made with chips in them and crooked to fit into the make the look low quality. They have also been made to have an oragne tinge instead of the grey.

This is some graffiti that would be added onto walls of buildings.