If your garage is separated from your house you have a built in fire separation by virtue of the space between the buildings.
Why do the doors from garage to house swing in.
Not only does it secure the hinge pins indoors but allows installation of a screen or storm door on the garage side.
Safety is the critical issue when deciding the swing direction.
Often a door opening into a garage would interfere with a car entering or a car door opening if left open.
99 9 of the time an entry door from a garage into the house swings in towards the house like any other entry door.
Public buildings have the same security concerns of course but they also have to consider other safety factors.
We recommend that the door between garage and residence should be equipped with a self closing device although no longer required by the irc and fbc.
A remodeler doing a flip house changes out all the doors in the home to update the interior and replaces the old door to the garage with a hollow core interior door.
Since garage doors are an exit we would install the doors to open in the path of least resistance.
With a standard hinge design this means the door will open inward.
For this reason the hinge mechanism needs to be positioned inside the house.
Unlike a private home a public building is likely to have large numbers of people in it.
Garage entry doors we install doors that open from the garage into the house on either side of the frame.