That means to calculate the cost of your money you need to multiply 4.5% X 35%.

Then multiply that number by the subject home's sqft and it should give you a pretty accurate list price for your subject home.I hope this helps!

Your insurer likely uses standard area multipliers supplied by some rating agency or developed in house.

Multiply that number by the square footage of the property you are comping.If I'm doing a rehab on the property requiring more than $25K, I usually subtract $10K from the ARV only because our market in my area is still declining slightly, and that will usually take 3 months.

I personally don't change my bids for a 750k property or a 120k property (as in, I don't use a different multiplier).

An appraiser will have a multiplier (the Market Cap Rate - specific to the area and condition of the property) he will apply to the NOI to determine a value for the property.

so if i am really bad with estimating repair costs, could i just do a 1400 sq ft house and multiply it by $40?

If the house is rectangular, measure the length and width, add them together, multiply by 2 and then multiply by the approximate price range I gave.That is for a perimeter French drain system; as others have pointed out, placing a sump in the middle of the floor is not the way to do it, putting the sump in the corner gives you usable floor space in the middle of the basement where it is most useful.  

Do I just multiply 1803sq ft by $118.76 and call it good?

Then I calculate the price per square foot and gross rent multiplier for each property.