Changes in rental policy...can I sign under duress?

I own a mobile home which we use for weekend getaways in a trailer park on the Colorado River. The owner of the trailer park has recently come up with some expansion plans and is requiring all tenants to sign a new contract with new policies. Basically, the new policies require me to give up all my rights as a tenant. There are no rent controls in La Paz County, AZ, so he is indicting that he can raise rates as much as he pleases, whenever he wants. Additionally, he can modify the use of the land and require the removal of particular trailers at any time. Many of these trailers, including mine, have been on the property for over 40 years and have additions, garages, awnings and other structures attached to them...so they are no longer mobile. If I am told to move out, then my mobile home is worth $0, because it can't be moved and sold, and it can't stay. If I don't sign the document, I will be at risk of being evicted, and will lose my entire investment. Additionally, if I decide to sell my place, the owner of the trailer park has to approve of the new owners...so he could make my property completely un-saleable if he desires, once again, reducing my investment to zero.

Can he do this? Can I sign the document under duress, knowing that if I don't I may lose my entire investment? I respect that the owner has the right to make changes to his investment property, but is it legal for him to make this sort of change and devalue our properties to $0, when we have been 'investing' money into our properties and into the park(through our monthly payments) for so many years?

Any insight or reference material would be greatly appreciated.

This sounds like a very siticky situation. My advice is to seek a lawyer and present him/her both the old and new contract, they will explain what your rights are. You can post your case at www.legalmatch.com