The stranded models is a really good pack for build.
Screens are ingame. Flatgrass.
The ladder can be climbed. Need to face toward it and go forward. To ‘dismount’ from it press jump or use. I used the ladder stool.
Extract it to garrysmod/garrysmod.
It has some overlapping files with the other house I made. (or it’s possible you already have some addons). Just skip those files or you can overwrite them since they are identical.
Almost all stuff are in the zip.
Additional stuff needed:
-Stranded Model Pack V3
-Counter Strike source
Other house made by me:
House on pillars: