The owner says the city is going after him because his park is on the city's new light rail line extension.
Caught in the middle are 125 families who call the park home.
The Mesa Royale Park is affordable, just $225 per mont plus utilities.
But it's also rundown, and in an area that is a key part of Mesa's redevelopment plan.
The city says it is only interested in safety for the residents, but the owner has his doubts.
The park is located on Main Street near Extension; it's right in front of the almost-ready light rail expansion.
The owner says it's no coincidence that the city wants to shut him down.
"I personally think the reason for it is we have the light rail out front here, I think the city wants to upgrade and beautify the area," said Gene Ham, the park owner.
The City of Mesa says that's not the case.
"The light rail has nothing to do with what is happening over there. You know our biggest concern is with the health and safety issues related to the infrastructure there," said Steven Wright.
The city wants Mesa Royale to make the place safe, or shut down by the end of October. People who live there are upset, they wonder what is going to happen to them.
"Yeah, we do not know that is the thing a lot of people here do not have a place to go, or any other family to go with," said Karina Gonzalez.
"I think it is crazy, I am disabled, I cannot afford moving, and I lived here for ten years," said Donna Yeager.
The City of Mesa has setup a help line for residents of Mesa Royale. You can reach them at (480)-644-2800.