I have been drawing house plans for the better part of 40 years and I have a first I would like comments on. I just recently finished a home for a customer. Very nice home. I charge by the square foot under roof for my plans. The customer paid me $4600 for the plans. They brought it to their builder and the builder has another customer that saw the plans and fell in love with it. That customer called today wanting to set up a meeting for next week to discuss a “few changes” they will want to make on the plans. How would you guys and gals handle what to charge for a plan that has already been drawn and may require just a few hours to make a few changes. Anything less that the $4600 that the first customer paid would be a disservice to my first customer that worked with me for a couple of months to develop this floor plan. I have never resold plans so not sure how that should work.