Water varies significantly by location, call the water utility in Manchester and ask them for the annual history.Also, ask a few of us what our plow bills were this past winter. 

The structure can vary depending on the circumstances of the investor.

Square footage increases will often be captured, but remodeling of the same square footage often will not.Assessments also vary by jurisdiction. 

While it does cost money to create and maintain as Rob mentioned above (it's not too expensive in the grand scheme of things...prices vary depending on the state you live in) - state filing/annual renewal fees, paying an attorney to draft your operating agreement (this step isn't necessary, but if you want to avoid issues down the road, it's a sound investment), makes taxes more complicated, especially if there is more than one member - it's well worth the money in my opinion. 

Depending on where you search, you may that "recently active" can vary greatly.  

Whatever costs there are, they are divided among all the lots, arriving at a cost per lot, which may vary depending on sizes.

Kenneth-Bids that are accepted seem to vary greatly by region. 

This will vary person to person but there are many people who haven't even "stressed tested" their real estate portfolios to even account for a depreciating market.This is also one area where the much maligned Cleveland cash flow crowd is in a better position than the "real wealth" San Fran equity out crowd:  the cash flow folks can likely cover their margin with the rental generated cash flow, if you've equity stripped your San Fran assets to expand your empire you really have no recourse if the APV goes down and you are overextended relative to your cash reserves.

It varies allover the place.

Laws vary by state, and aren't immune to change, which can render a gurus' system "useless".