While it would be great to have a place to put the location of a project in QBO, if you are using Quickbooks Time, formally known as Tsheets that is integrated with QBO you can enter the Location address in QBT. We also use QBO for contracting work and what we have done was use 1 of the 3 custom fields and titled it LOCATION and we input the address there, this allows us to have one customer with multiple addresses and project locations that we work on. Hope this helps some of you.