It is an attached garage on the East side.
House was built in 1962, spec house, cheaply built, minimum codes IF they followed them.
I have found there are several things the 'inspectors' may have been paid to overlook.
Our fine city government has always been crooked as a snake and still is.
The ceiling is finished with blown-in insulation.
Attic space is very well ventilated.
There is a plywood uninsulated but sealed 30x36" attic access door
Exterior walls are minimally insulated.
House wall between garage is insulated in a minimal fashion.
Kitchen original hollow door is well sealed but does not meet fire codes anymore.
The weak spot is the wood garage door on the north side which is uninsulated but well sealed.
I have materials and plans to convert the garage door to an insulated carriage house pair of doors.
I have even figured out how to mod the 40+ year old chain drive garage door opener to open the new doors.
The worst thing is a heavy snow could seal up all my doors and I would be unable to exit the house.
I use the garage door now for exit in heavy snow.
I try to keep the front door area shoveled during snowstorms to avoid blocking them.
If the front doors are blocked I would have to exit rear doors and smash through a privacy fence.
I do have a sledgehammer and a post driver but I am getting too old and weak to swing them.
I am thinking about adding some reflectix insulation to the west bedroom wall for some more insulation from the sun. The neighbors probably will not like the appearance but I figure everyone will have to do it in years to come. I had it up several years ago when the house next door was vacant and it seemed to work well against the sun. I saved the insulation in 4' rolls with battens. It is easy to put back up. This is similar:
It adds almost no physical insulation but does reflect the sun. The house wall does not do badly if it is not heated by the sun to 200°F on the outside.