There is the electrical which will be a minimum of two hours, probably more like 2X.What do you think the cost might be for someone to run wire and fit a new light box for a ceiling fan in a virgin ceiling? Access to the ceiling from above is pretty straightforward through an attic access hatch that’s about 12 ft linear distance to where the box needs to be placed. Attic has blown in insulation. Ceiling doesn’t appear to be anything exotic but it does have a spackled finish. There’s some available existing switches nearby on the wall to tie into already in place.
No idea what electricians charge for this kind of thing nowadays. I thought of doing it myself but sadly voiced that out loud and the wife said “no”. Something about “you’ll just fall through the ceiling”.
Do you need a building permit for this kind of thing?
Then where does the vent fan run to? Venting moist air into the attic isn't good idea.
Will you need a roof vent installed? Add for a roofer or DIY.
If there is a nearby existing vent you can get a two into one coupling from a sheet metal shop. depending on whether the devices already connected have back flow gates you might need the gates as well. Some power vents come with the back flow flaps.
I did a vent connection for a friend and the vent parts were around $100 IIRC, not including the roof penetration that was done by a pro.
Although it was for a good friend I didn't do the roof work as he wasn't a three story, steep pitch roof, good friend.
Said friend wondered why his bathroom vent wasn't drawing air. It turned out that the renovation contractor used 50 feet of drier vent to connect to a vent 15 feet away. The excess was snaked all over the attic and instead of connecting to a proper roof vent, he dropped down to a 2 inch fitting and teed into the soil stack.
Kevin???
Oops I may have misread. If it's a ceiling fan instead of a vent fan ignore most of what I wrote.