You might have a phone number to the assessor that goes directly to the person handling your case. This would be on your letter that the form came with , or attached to it. Call them and ask them how to fill it out so that you don’t pay too much…They will help you..I know it sounds like a joke but it is easier than trying to fix mistakes. As suggested above above, make sure to stress how it is mostly landscaping…attribute most the budget to that if you can within honesty, of course.

A future buyer could try to figure out your cost basis , some people do that or start to do that before the realtor straightens them out, but that’s a waste of time. Market will dictate price.