The tax bill is a function of two components: the tax rate for the city you are in and the assess value.

I will see what I can't do to figure out the restrictions on Historic structures, as that could be a huge component of the demolition app. 

The cost of land is only one component to development, does the market bear $60 per unit or will it go up to $100 per unit or less?

We backed out of the deal due to environmental concerns regarding contaminated soil from a UST that was taken out back in 1987.

My experience is that there are a few components to a tax bill this aged.Principle, Fees and Interest (if its in tax lien status).Some times you can get the fees removed entirely if you pay the full amount just for asking.If you want to take it further, ask the treasurer (the actual treasurer, not another person in that office) this question "If I bring this up at the next Board of Supervisors meeting, is there a shot they will reduce the principle?

Component cost will be low but it still takes the same amount of time for the installation. 

I've created a list of components, sku's and pricing.

Sewer, if it shows up on the taxes would be a component of your analysis that is figured into the portion of rent garnered for the property.

Many gurus state the ability to provide the steady work to the best workers is considered the most important component to the rinse and repeat.

@Evan Ventura - I believe the key component is to make this a win/win situation for each of you.