Hey-ya,

We are having a hard time finding out how to calculate Option 2 : Affordable Housing, for-sale units.

We read from the LEED ND v4 reference guide : ''Determine the maximum amount of income available to pay principal, taxes and insurance (PITI) according to Equation 5. A factor of 28% is applied to adjusted target income as the recommended maximum percentage of income that households hould spend on homeownership.''

What about interests on mortgages? There are no guidelines, nor are they mentioned anywhere.

I don't know where to start; should we get in touch with banks and see what kind of mortgages we could obtain? What if the mortgage is based on 75 years? : of course we are going to obtain the credit!

Thanks for your help.

William