While the deal does not hinge on the ground-up phase, it could provide a significant upside.After consulting with the City Zoning Department and reviewing the dimensional regulations of the neighborhood district, it appears that my plan is feasible.

Quote from @James Wise: Quote from @Jerryll Noorden: All, don't be so one-dimensional. 

The problem with BP answer is folks here answering multi-dimensional problem with single set of answer.

We spend more like $60 on a quality dimensional shingle.

You should engage a civil engineer to complete a survey and they will be able to tell you based on the  zoning and dimensional requirements whether the subdivision is plausible.

When answering questions in a two-dimensional forum where people are asking questions, business owners try and tell a story that gives as much of a picture as possible and context is sometimes difficult or lost in the way people read the responses. 

I can borrow against my portfolio at about half the rate that I could borrow from a bank for.2) They think 2 dimensionally, focusing only on the here and now.

A small number use the hot press process that is distinctly superior in my opinion in overall strength in dimensional structure and durability.Your chart does note finish which is an excellent point as it's the finish and not the wearlayer that gives a product it's scratch resistance( AO and Ceramic Bead being one of the best but it also depends on how many coats are put on which many makers do not detail).

On an early 1900s house slate is common and will last a long time but it's hard to find someone to repair and more costly due to lack of materials. 3 Tab shingles would be next and are very similar to what is available now with improved designs in the dimensional shingles which oddly enough were made to resemble the old slate shingles.

It is like people think only one-dimensionally which is mindboggling to me.A strategy being low cost, like driving for dollars..