So, this is one example why I am asking.

An example: Market Rent is $1600 p month, PITI is $2000 per month.

You can check out an example of one I built there at http://www.sellsanantoniohomefast.com.

For NJ, sales come in monthly, although in some counties there might be delays of up to 2 months (example: Bergen).

When I pointed out the 20% down figure, it was not intended to imply that was the standard necessary on a commercail mortgage, only as an example.

Just an example but you get the point.

But, over time, large numbers take over and it will settle to around 50%.The people who get into trouble using this long term view of expenses are the ones who are doing short term deals.For example, you buy a building based on estimating the expenses at 50% but six months after you buy you are force to repair a failing foundation.

So for example, if a lender charges 4 points and 10% interest for $10000, in this case i need to pay $400 up front and $1000 for interest?

Example: a contract signed on Sept. 13th., what's my drop dead date??

For example, we recently had a rubber roof quoted.