Pet friendly rentals may be more difficult to find, as the rental market is flourishing and rental prices are rising higher. Have you thought of purchasing because rates are very low and it may cost less than renting!
You may want to consider having the monthly payments as rental income to you and your sister This will add income to your future purchase and put you in a much better financial condition.
The lease agreement should spell out all the particulars of Landlord and Tenant responsibilities. That being said, there are times when neither party takes care of their responsibilities correctly. The advice of an attorney may help you solve those concerns.
It has always been my advice that a buyer(s) have the inspection prior to spending any monies for any part of the home buying process.
Have a Licensed Electrician due the work to avoid future liability for yourself in the future.
It would be best to get that info from the property management company representing the rental.. Make sure that you see that in writing before signing any paperwork.
You may need to contact a lawyer for a definite answer. Your listing broker has changed names, even though your initial listing was under the previous company. Look over your listing contract to make sure that they did not add language assigning the listing to a future office.