There is little supply, thus creating high demand and allowing the "supplier" to choose their pricing.

Also, if you have the supplier/type of bathroom tile you used that would be great too!  

@Marian Smith yes, my roofer used a rigid foam product that was pre-fabbed to produce the desired slope; you can search generically for "tapered roofing insulation" and should find suppliers in your area.  

find a small local kitchen cabinet supplier that only supplies cabinets or go to a local lumber yard and ask where apartments complex owners are buying the cabinets. 

Most importantly, does any of these submarkets have any economic anchors like state government, major universities, major health care centers, or manufacturers that are independent of the economy like military suppliers that employs most of the residents of that submarket?

Another possibility would be to find the commercial suppliers in your area (the big warehouses with little or now showroom that sell to HD and Lowes and the big contractors) ask to speak to outside sales. 

Offer to pay for the materials upfront (call in your credit card to the material supplier), and then offer to pay the rest of the 50% deposit (50% minus the materials cost) when he shows up to start doing the work. 

Find your local rta cabinet supplier and get something that is of solid wood that will last longer.

Because of the drought across the U.S. many crops and cattle were affected.The shortages happened months ago but reserve supplies have been worked through.Now as demand is the same but with limited supply certain items beef,corn,etc. is going to really rise.It has been going up in small increments but will go up in bigger chunks soon.Smart restaurants are looking at what is not rising or is minimal in increase and trying to create flavor dishes so that their price margins don't go up and the profit shrinks.They still might use some of the products increasing in price but with less quantity in the dish to cut costs.This is why for instance if I buy a restaurant business I would adjust down the stated profit model to compensate for the coming higher food costs unless I knew I had a fixed food contract and the supplier could not go up on me.My background before triple net investing and apartments was commercial land development so I find your assembling of parcels interesting and would like to hear more about it and your plans.

Every sub and supplier you deal with wants a deposit, but your construction draw isn't going to fund until the materials are installed.