When looking back, that isn't an accurate way to do it for a variety of reasons, plus it is a hassle every time to do the math and collect.  

One project in particular they said they only had enough pressure to do 3 more meters.

I've already verified that it can be done as I've paid off the ones that were with Freddie Mac (or Fannie Mae).

The answer is it depends - if there is no more settlement then they are correct you probably do not need piers at this time, if it continues to move then you need to do something.

Until you learn to estimate yourself, based on your local costs, any estimate will probably be off.

You can learn to do this independently or get a rockstar REALTOR to lead the way.

Investors should be extremely cautious with Qualified Intermediaries that also represent (and get paid on) replacement property solutions or Qualified Intermediaries that refer clients to their "associates" or "friends" for replacement property solutions so that they can get paid a referral fee or those that actively put replacement property solutions together in order to make money.  

A better solution, in my opinion, is not to rely on wholesalers,  as not only is it a dying breed due to the sheer incompetence they exhibit due to gurus' wrong instructions and teachings, but, wouldn't it be better to generate your own leads through a high performing website?

Quote from @Rajagopalarao Paidi: Is there anyway to minimize or avoid agent costs, I don't have much scope for profit if I pay agent costs, what options typically one has Do it FSBO if you want to save them and then hire a TC or company to do the work...

You are procrastinating on the smallest of things which means you may lack the confidence to do what you are planning to do.