They may take a bit longer to make than Nomadic shelters.
They offer some basic degree of protection. These structures are a little bigger and more advanced than Nomadic shelters. They are fragile and you shouldn't spend too many nights in them. These are generally the type you would build if you cannot find anything else if you are nomadic or if you're in an emergency.
Obviously, these can vary, depending on how detailed you make them. These shelters are organized by how long it would take to build them. 4.19 Military House (Blueprint 1)(Incompleted).4.4 GrieferProof Freestanding Protective+.