If it’s policy for the people doing the work to wear masks, or they simply prefer to be masked, maybe they could show up wearing masks with extra masks for the tenants and courteously ask again about wearing the mask and offer one.

Regarding legal, make sure that the school doesn't have any kind of say in the residential housing market (small college towns this is very possible) and that your renters are courteous to the neighbors, mow the lawn, etc, and you shouldn't have many problems.

If you charge no fee, you owe them a courteous '"No.

Ive always been nice and courteous.

Be courteous and professional by simply informing the applicant you do not provide reasons beyond the fact that they do not meet your qualifications.  

Just be courteous and keep in touch with regular follow-up.

I ONLY post ads and share list when I have at least the bare minimum of info (room#, bath#, sqft, ARV) as I feel this is courteous, professional and will not waste a buyer's time if the property doesn't have their requirements.  

A happy tenant is one who stays, and employing courteous, competent maintenance men will keep your apartments full.Ratio Utility Service Company- A company that calculates the resident’s utility based on number of occupants, square footage , or a combination of factors and then bills back the usage to the tenant.

Plus it's more courteous to let them know sooner rather than later.Just tell them that their report did not pass all of the criteria required to qualify.

Be upfront and courteous and make sure everything is done right.