For basements, I have changed my mind about permits and whether they are required or not. So IMO, where no structural things are being done I would not bother with permits from the town but there are risks if you do not have work done properly.
I looked into this issue by calling the Insurance Institute of Ontario and by calling my own insurance company for their opinions on this issue and they put it like this.
If for example you do not get permits and there is an electrical fire then the insurance company will try to determine the cause. If it is caused by negligence then you may have a problem but if it is caused by an accidental failure of some sort then you are 100% fine whether you got a permit or not.But, based on what I have seen only 50% of the finished basements I see in newer home are good and a few are great. The rest are complete butcher jobs done by hackers.
A week ago I inspected a newer home with a finished basement and the job was one of those typical butcher jobs with typical problems.
- The sump pump was a pedestal type where the float lifted as water entered the pit. As the float lifted, a metal rod also lifted above the sump pit. The contractor decided to install a built in bench that when closed prevented the rod from lifting. When I opened this bench the float bar popped up and the full sump pit pumped like crazy.
- The basement Air Return was missing - covered with drywall.
- The builder forgot to install joist hanger nails at the joist hangers for the basement stair landing and you would think the contractor would spend $3. for a box of nails and fix that.
- The furnace room had no grate on the wall for air for combustion.
- The wiring was pitiful.
- The bathroom outlet was behind the sink and not GFI protected. Both are code violations.
- The basement bathroom sink drain had no trap and leaked.
etc, etc, etc.