I have a loan that is secured by timber land and the purpose is working capital and repairs to an office building. I think I am getting confused on whether I should be looking at the collateral or the purpose to classify this loan. Any help would be greatly appreciated.

There are two types of qualifications under the call report (and thus for CRA reporting). The first is collateral: secured by farmland (timberland is considered farmland)is a small farm loan if under $500,000; secured by non-farm, non-residential real estate is a small business loan if under $1,000,000. The second is purpose: farm or business (self explanatory).
The two types of classification are independent of each other.