Need Creative Way to purchase

This is for Texas.
I have a situation where there is a 1 acre lot with two mobile homes on it. Seller does not know this yet, but I found out from the city that upon sale of property the mobile homes must be moved immediatly. I was trying to think of a way I could purchase the property owner finance so that the city does not know that a sale occurred.
Would this work? The property is owned free and clear.
Does anyone have any ideas on how I can purchase this property and keep the mobil homes on it until I decide to sell the land down the road. I happen to know that the value in the land will be going up since there is comercial property growing up all around this area. I am pretty certain it would be a good deal. I just want to keep the homes on property to live in until I am ready to either build a home or move homes and sell land. Please let me know if you have any ideas.

Thanks,
Gary

I do. Land trust.

Da Wiz