You should also take  landlord references with a grain of salt.

Dispose of any rags or sponges used to clean the mold in a sealed bag;11.TO REPORT TO LANDLORD IN WRITING AND VERBALLY THE PRESENCE OF ANY MOLD GROWTH on surfaces inside the Premises;12.To allow landlord immediate entry to the Premises to inspect and make necessary repairs in the event mold or water intrusion is present;13.To use all reasonable care to close all windows and other openings in the Premises to prevent outdoor water from penetrating into the interior unit;14.To clean and dry any visible condensation/moisture on windows and window tracks, walls and other surfaces, including personal property as soon as reasonably possible.

You may want to seal it.

His answer was: the tenants would stay in the house while each room is bio-sealed.  

Sorry to jump the forum like this with no history here, but I'm desperate for advice.I'm under contract to buy a fourplex in salt lake city (hot market), and the inspections have been a little nightmarish.

When it snows here in VA, it was my job as a PM to get a vendor for snow prepping of salt and chemicals, snow removal, and assess and take care of any damage.

I'm not an accountant, so take this with a  grain of salt, but you would be taxed on any gains.

What about having tenant responsible for certain areas of maintenance like snow removal and salting in exchange for a reduction in rent?

The only thing I have to add is, take inspections with a grain of salt.

The attendees range from the old salts to the newest of the new.