How to know when to hire Maintenance person on payroll?

[Veronique Leroy]

Hi all! We self-manage our properties. We will have 45 doors at the end of the summer and I'm wondering how to figure out the right time to hire our own maintenance guy instead. Like many other managers, we find it difficult to find contractors that can do the work right in a timely manner. But I don't want to jump on having someone on payroll unless it is really necessary. 

What do you recommend? What have you done?