Do you need permissions from the platforms to pull their listings onto an aggregator's site?

I am the buyer/tenant on a lease with option to purchase.I am ready to exercise the option, however, I plan to sell the home right away and cash out.Since I have not obtained title to the property yet, can I market the home for sale as an owner, or as an agent, if I obtain in writing permission from the current seller?

These people can give you access with the homeowners permission.

The existing tenants are requesting permission to turn off their power 2 weeks in advance, so they can change their power bill account to their new apartment.

He pays, he asked permission to bring in a roommate,  a few corrections like paying once a month and you're great! 

Yes, part of that includes the permission to be able to speak to the lender on the owner's behalf.

The issue with this concept is you can't give away your legal rights.Example I cannot write a contract granting you permission to murder me. 

My comments on that thread were in reference to a cleaning service for the rentals and not permissible use.

Do you need HUDs permission to do this?

I lease an apartment in Belmont heights and with the owners permission I sub lease it on Airbnb.