@Jack Mitcham  I answered your other threadyour thinking of RE in the 1960's.almost all markets have discount brokers were you hang your shingle and only pay by transaction.. or a monthly fee..

About 10K + tax for 30 year compositions shingles by CertainTeed, for 24 squares.

The inside was slightly discolored, obviously if water is going to go through shingles, then run down wood, through insulation and into sheetrock it will not be crystal clear anymore.

These "park models" that I have an "in" on are 12' x 40' and have central a/c and heat with 2x4 walls, shingle roofs, and vinyl siding.  

I negotiated it and we agreed on $20,000 cash because the shingle roofing was older that 14 years so it needed to be replaced entirely.  

What gets a bit sketchy is the added line items that specifically say the contractor can add charges due to any unforeseen expenses such as work that is needed after tearing out an area that couldn't be known until a certain wall or shingles were removed.

I know that copper lasts longer than asphalt shingle and is more complicated to install.

It is code here that you can only put 2 layers of shingle on.

In May 2013, a tornado came close to both properties and resulted in damage resulting in two claims (nothing as major as you think - just re-shingled roofs.

We get a discount off retail on shingles from Home Depot; we pay $17.25, retail is $23.25.