If this isn't a walk out basement you will probably need to put an egress window in to conform to code.
The boiler room will need to have firecode sheetrock on the walls and ceiling and the door needs to be a fire door. The sheetrock needs to be taped and compounded.
You need smoke and CO detectors. You might need to have an integrated, hard wired smoke/CO detector system installed in the whole house.
You should be able to get all the requirements at the Building Dept.