You will want to understand taxes and applicable laws.

If your cleaner charges $120, set the guest’s cleaning fee at $120 plus any applicable pet fees.

I've seen some people house hack a single family home by renting out the rooms, but keep in mind that traditional lenders would not be able to use the income from renting out the rooms (known as boarder income) towards additional income on the application.

I am sure there are more software that does the same thing and costs less.

Short sale/Loss Mitigation applications with your agent can avoid foreclosure. 

I currently use the landlord software Avail.

What aspect of their business, the property managment software or investment management software.

@Jake Andronico Hey Jake this is a software that your team developed.

also look into AI powered softwares for narrowing down your search criteria. 

As others have said a 1031 exchange, which allows for the deferral of capital gains taxes, is not applicable to properties held primarily for sale, such as a flip.If your goal is to defer taxes, you might consider holding the property as a rental for a period to qualify it as an investment property, which could then potentially be eligible for a 1031 exchange.