Due to the scope of the renovations we have to bring everything up to code and we plan to install fire suppression.

Interest rate increases by the Fed leading to suppressed home prices, lower volume? 

Next you have 5 year arms, which is mostly commercial.If it's a 30 year, nothing is likely going to happen, those some people could have a 2nd with a HELOC, so that could affect them in real time, thus suppressing their spending power, or forcing them to sell or be foreclosed on.You also have 5y arms, as they come due they will have to pay it off.

So, housing demand is suppressed artificially - latent demand, if uncorked, would send home prices into inter-stellar space.

The entire space will have to be brought up to code--plumbing, electrical, fire suppression, insulation.

There's obviously zero reason that the Sunshine State shouldn't be leading the world in solar and it's taken massive effort by politicians, oil companies and other vested interests to suppress it.

I'm looking for guidance in what is needed (e.g. ingress/egress requirements, fire suppression, etc.) to create living or working spaces in old structures. 

Once you have the rights to the property you can go to a tax attorney and do what is called "try and suppress" the title. 

You may need to visit them a dozen times to get your fire suppression system signed off.

Property prices have been suppressed in my area for a while, though I could argue they're lower than they should be.