welcome to my guide to setting up a safe house in a Z-day apocalypse this will tell you the basics of barricading, defense and site selection. Safe houses are temporally settlements that are usually abandoned in less than a couple of days after getting created.

Starting with what should be the easiest part, site selection is a very important part of safe house creation and the process that is used to select a site can be broken down like this

main page

rating system
1=bad
2=not bad
3=good
4=very good
5=flawless

entrance
2 or 3 entrances=good
1 entrance=bad(can get trapped)
4 or more entrances=bad(can get flanked)
glass=bad
wood=good
metal=very good

size
1 or 2 rooms per story=bad
3 rooms per story=not bad
4 or 5 rooms per story=bad
1 story =bad
2 stories=good
3+=very good

content
basement with one way in=not bad
basement with 2+ ways in=bad/good(depending on where the entrance is)
attic with fixed entrance=good
attic with removable entrance=flawless
weapon/supplies=very good

The next thing you need to do is barricade the safe house

Barricading safe houses is essential to surviving for many reasons such as the length of time it takes for the Z to get to you. in other words, the better the barricade the more time you have to run.

the best way to keep a door closed is by jamming the hinge of the door the wrong way so this is best achieved by nailing a plank of wood or sheet of metal across the hinge end of the door. this should be supported by and other plank jamming the other side.

materials
thin weak wood = bad
thick weak wood = bad
thin strong wood = not bad
think strong wood = good
iron = very good
steal = flawless