So here is my progress so far (including some ideas from others ^^)
This is were the zombies spawn.-. They have a protected spawn with many metal panels that prevent spawn camping from long distances..
The boat house now has barricades and lots props to make more shelter
Added a 3d skybox and some other things aswell.. (Water does look kinda strange..
Should i maybe change texture?)
Other things: The map now has props and lights and cubemaps.. The rooms are almost done in the house and whatever more has to be fixed will be soon! Please tell me feedback!