I'm going to have to agree with Bruce. The IFGC states in [M]614.6.1 Maximum length. The maximum length of a clothes dryer exhaust duct shall not exceed 25 feet (7620 mm) from the dryer location to the outlet terminal. the maximum length of the duct shall be reduced 2 1/2 feet (762 mm) for each 45-degree (0.79 rad) bend and 5 feet (1524 mm) for each 90-degree (1.57 rad) bend. The maximum length of the exhaust duct does not include the transition duct.

There is an exception and it states: Where the make and model of the clothes dryer to be installed is known and the manufacturer's installation instructions for such dryer are provided to the code official, the maximum length of the exhaust duct, including any transitioin duct, shall be permitted to be in accordance with the dryer manufacturer's installation instructions.

I doubt that the contractor ever knows what kind or type of dryer is going to be installed. Therefore nothing to give to the code inspector.

I have yet to do an inspection where the dryer was installed and the manufacturer's installation instructions available.

Some dryer may blow upto 90 feet. The person moving out may have had a dryer that would. However, the person moving in may not. Have to stick to the code, Jerry, that's why you say it's there.