I have a column with a drop down list:

Condo
Multi-Family
Retail - Ready
Retail - Land
SF Lots
Industrial
Mixed Use Land

I need a formula when one of the drop downs is selected, it will total all
the dollars associated with each selection. I have tried the following
formula:
=SUMPRODUCT(--D6:D18,"Multi-Family",SUM(E6:P18))
This gives an answer of #VALUE!