Your House of Worship's bulletin is a good place to check. After getting a bunch of bids, that's where I found a fantastic tree service. (Cheapest one, too.)
If there are company electricians where you work, it's a good chance they do side work.
There's always Angi's List. (Be ready to get spammed, so use a sacrificial e-mail address.) Then, check their reviews outside of Angi, such as on Google Map reviews.
In what city are the projects? Maybe one of the members here knows people nearby.
Paul
PS: If time permits, maybe search how to do the projects and try them yourself. It may prove to be fun- and you get bragging rights!