I put this breakdown in my archives to keep track of what actually occurs as time goes on.Rental Income $125,400.Property Taxes $21,875Gas $1300Trash $1,400Water $3,000Insurance $3,600Net Annual Income $940,000X 10 Years = $140,000Now, I look at profit with annual rent increases plus increased property value that results from rent increase multiplied times the Gross Multiplier over a 10-year period.

I would keep couple things in mind though - the more multi-family you have, the more exposed you are to the issues as the number of doors and tenants multiplies.

Do they us a multiplier for various trads in different cities?

Does this book include all CSI costs for trades, either LS, SF, units & etc. for cities throughout the us with a multiplier?

Average it out and multiply that averaged price per square foot by the square footage of the subject property.

I multiply that by 1.5.

Note 2:  You'll find they will always do two things:  1) They will always start out by assigning 50% of the deal to them, as the finance partners; 2)  When they total up the percentages, the total will be somewhere north of 100% (I've seen as high as 300%)5 - After the percentages are assigned, and somehow the total is greater than 100%, verify that the ratios between the assigned percentages/role is accurate...then,6 - Divide 100 by the final percentage totals generated in step #4, and multiply each of the roles by that number. 

The monthly multiplier is .85% of the loan amount divided by 12 months to get you mortgage insurance payment.

This multiplied by a lot of properties over a lot of years is a whole lot of wealth.

For income they may use either the GRM (Gross Rent Multiplier) or Cap rates approach (the more popular method).