Upon arrival the tenant had a leak coming from the toilet in the Jack and Jill bathroom. After inspection and flushing the toilet I saw that the leak was coming from the back of the tank. I spoke with the homeowner and let him know that I needed to do a major rebuild on the toilet to fix the leak. He agreed to the estimate and I did the major toilet rebuild. After it was completed I flushed the toilet several times. Everything is flushing good with no leaks. I also did a whole home inspection and found nothing else that needed addressed at this time. The tankless natural gas water heater is a 2013. I will be providing an estimate since the water heater is over 10 years old.