The villa is over 6000 sf bua, comprising a main villa with staff kitchen, lounge areas, 5 guest suites, outdoor restaurant area, a large veranda overlooking the sea, a pool, and a second villa with staff accommodation and a further 4 guest suites.

I currently have several properties that need pretty substantial rehabbing (full kitchen/bath remodels, added a 3rd BR/Bath to 1 property).

But that's in the window between LOI and contract and not pre-LOI. 

$150 is a great estimate for a cracked window and a cracked door.

Inspectors told us that we need to install 4 fire rated windows by the fire escape because the property is commercial...where can I get affordable fire rated windows / glass?

Drove around the corner and this had windows boarded up but otherwise seemed to be in ok condition.

Sounds like you just got that window of opportunity. 

I would think it is a pretty common size, as the big box stores sell replacement windows in those sizes.

It's all about the loan company wants to cover their a... so they do an inspection.When you have a simple kitchen sink without a faucet it will not pass inspection lots of small issues will cause it to fail.

I did a nearly full rehab on the property including new roof, windows, flooring, and a lot more.