From what I have been told by the tenant couple, the 3rd tenants pet is either inured or just plain getting old and its health has deteriorated quickly in the last short period(month or 2). 

We've seen it time and again and it only leads to folks living in some horrible, low income apartments or rental homes instead of allowing folks, who fully choose to live in RVs and manufactured home a safe, affordable Park to live in.It also makes prices on existing Park prices go up and many deteriorate b/c they know their guests have no other choice.   

After relations between the tenant and the real estate company we hired to manage the property for us deteriorated, the real estate company recommended we start the eviction process. 

You'll also want to ensure you have a good property manager to look after the upkeep of the property if you are not there to notice anything deteriorating or which may need attention.This article goes into a lot of the considerations about whether to form an LLC or not: https://www.mmpph.com/wp-content/uploads/2019/04/May-2019-newsletter.pdfCreating an LLC in California would cost you a minimum tax of $800 every year.

So it must have deteriorated quickly.

Purchase original single family lot with deteriorating home for $150-$300k.

"If unforeseen rot, deterioration, insect damage or poor structure is found and is found that it is necessary to replace the disturbed area, not included in this scope of work, an Additional Work Agreement will be written at such time for such repairs and costs will be due payable prior to work being completed.

This building AC Systems, Electrical, Lighting, Fire Spray for Vent Hood, etc. are all non or minimal working condition, and have been deteriorating since day one of lease.

The Buyer/Seller relationship will deteriorate and likely the contract will fail then anyway. 

You'll also want to ensure you have a good property manager to look after the upkeep of the property if you are not there to notice anything deteriorating or which may need attention.This article goes into a lot of the considerations about whether to form an LLC or not: https://www.mmpph.com/wp-content/uploads/2019/04/May-2019-newsletter.pdfCreating an LLC in California would cost you a minimum tax of $800 every year.