You also need to give ample advance notice, recommending they use up their groceries so they do not have to remove or throw out much, and a qualified pest control person will meet with the tenants prior to tenting to explain the process and answer questions.There are different treatments, depending on the type of termite.

There are several ways the listing agent can give you preferential treatment without crossing ethical boundaries.

Even so, unrecaptured depreciation will still be taxed at your marginal tax bracket rate up to 25%.If you find that you will end up with a tax loss on the sale of your property, you can use an investment sale tax treatment to claim the full value of your tax loss. 

He trashed the unit (5k+ in damages) but we were relieved to have our house back.We complete two treatments with the exterminator and decide to do a diy heat treatment by renting heaters.

Properties acquired with the intent to hold for rental, investment or business use will qualify for 1031 Exchange treatment, but properties acquired with the intent to rehab and sell quickly or flip technically do not qualify for 1031 Exchange treatment.Assuming that he qualifies for 1031 Exchange treatment, the proposed transaction could actually be structured as one or three separate 1031 Exchange transaction.

You will get killed with cap gains taxes in year of sale, yet you will get the principal back over time from the financing.Read up on how you qualify for installment sale tax treatment of a selling financed sale.  

Do you have too pay to relocate the tenants while termite treatment is being done?

The biggest difference here is the tax treatment of rental income and capital gains and depreciation.

Get the air ducts cleaned or use an ozone treatment?

Only rental, investment or business use properties qualify for 1031 Exchange treatment at this point, but if you sell today you should take advantage of the 121 Exclusion since that is tax free (vs. tax deferred like a 1031 Exchange).