I learned not to accept gifts - jelly, food, whatever - from tenants.

I tell them rent for a short time when they move here and then we can start shopping for them.

I am no longer buying single family, but absolutely love multi-family real estate and love talking shop.... both one on one and through my podcast on I tunes called Lifetime Cash Flow.

Shop around.

It is the one-stop shop.

And our interest is in merely trying to quantify and qualify the home for you.If you have the home inspection in hand it's a spec sheet that you can shop around and get bids on, use to intimidate  Negotiate with the seller, offer to rehabbers (as a wholesaler) all without exposing you to any more liability, or stress, or awkward situations outside of the normal real estate purchasing process.And finally to address your last point, I know a couple Home Inspectors, and they do their own flips, also most come from a construction/architecture background so to say they don't know as much as a contractor is silly.  

Just shop around.

You can get a gift from your family or friends.

A vacancy is usually like a gift from god if they leave voluntarily.

They will come out and measure, then make the new window at their shop, then come out and remove your window and install new one.