Heather, Your h may be offering to do them because he feels guilty and by doing them, it helps to alleviate some of his guilt.
I was on another forum this morning and there were some suggestions there about repairs, etc. to the home and your xh wanting to come there to do them. The suggestions that was posted was to check out your neighborhood or the local paper and see if there are people who do the type of repairs you need done The local schools may have students who are interested in doing hands on learning about certain things and the last one, which I have seen being used is bartering. The person comes to do the repairs and you may be able to do something for them, a basket of cookies, a hot meal, sewing, etc.
Just food for thought...
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.