Probably the easiest is to contact a local real estate agent that is experienced in the sale of mobile homes. Then ask them to prepare a Broker’s Price Opinion, otherwise known as a BPO. If you are looking for a more accurate figure, I recommend hiring a real estate appraiser.
I once sold manufactured homes and financed them through FHA. If you ate just purchasing a manufacture hone with no property new. Do some research on the computer. If it’s a Fleetwood for example you can call Fleetwood dealerships and compare prices. If it is a resale email me email@example.com. If it is on a piece of property it will be the land, septic tank, and water well that has the value. Good luck.