BTDT. Lots of these guys promise lots of work, need it done NOW....and are slow pay, if ever pay. There are a few good ones, but most property management firms are scum. Failed realtors. Especially where housing is involved.

Nor is the work much fun. You spend a lot of time cleaning up the maintenance mans' or tenants' mess. Or, trying to get another circuit in the obsolete panel.

Just be real careful about getting change orders, additions documented- and don't go out on a limb; make sure you get apid promptly!