Thanks Harjeet and Jack, appreciate your response

Looking forward to the responses!

I know I'm not responsible for it, but I'm a bit puzzled by the solution as the hole is large and there needs to be space for two pipes to fit through. 

Then I could get an idea as to how accurate my numbers are (if I'm consistently willing to overpay then my calculations are obviously flawed, same for if I'm coming out with a very low number).

“In the future, work with them directly to reduce any delays as I’m not always available.”In other words, if you ask me, it’ll take a long time to get a response!!

We will only cover one extermination and the tenant is responsible for any others needed.

Technically, the seller's side is responsible if they agree to have those done.

The owner Jenni and her team is very responsive.

May I ask what type of leads did you campaign to and roughly what was your response rate?

Hire them hourly and put them under your wing... this is basically like the interview process... you groom the individual slowly giving them more and more responsibility over the next 2-5 years until they can run the job site on their own with minimal input from  you and can clearly communicate any issues that may arise.