@Joshua Adlam- sorry but I am going to have to poke a few holes in your response. Replacing doors and windows typically require a permit which will either have to be obtained by a licensed contractor or the homeowner (if it is an owner occupied property). A handyman can’t pull a permit.
Also, “a contractor isn’t an expert”? I’m sorry, what? A contractor had to spend a gazillion hours preparing to pass state licensed exams, and is held accountable for all of their work as they are LICENSED. A handyman however, can simply be someone who has done these small jobs before. Typically handymen around here hold no license, may or may not carry insurance, and are not held accountable for their work by anyone because they aren’t technically licensed to do any work.
Here in Pinellas, you are supposed to be licensed to paint, install flooring, cabinets, drywall, basically anything besides demo and clean up. Sounds ridiculous I know, but the Pinellas County Contractor Licensing Board has full time people driving around looking for unlicensed handymen doing work such as what I mentioned above.
How do I know? I am an investor who also happens just to be a licensed contractor, who has to clean up the mess of unlicensed handyman “experts” who do it wrong, get paid, and then bounce without coming back to correct what is wrong.
I would be careful recommending just any old Joe Schmoe handyman to your clients for their work.