New build manufactured/modular home experience in CA

[JC Chavez]

Back story - I own land in a developed neighborhood surrounded by other like manufactured/modular/mobile homes. My lot previously had a manufactured home on it, but it is clear and vacant now. There are utilities on the property. My goal is to place a manufactured/modular home on the lot.

I have been researching home dealers and builders in the area. I find it challenging to determine the true costs and the potential hidden or surprise costs for a project like this.  I would love to hear anyone's experience they have had with going through the process of selecting a builder/dealer and completing the project. I am interested in learning what other things to expect that I may not be considering. My particular option is specific to CA, however I would be open to hearing about others experience in the western states. 

Some of the dealers I have been researching and speaking with are:

Factory Expo Homes, Factory Select Homes, Fleetwood, My Cavco, Baughn & Cameron

If anyone has experience working with one of the above dealers/builders and have gone through the process beginning to end, it would be very helpful to hear your recommendations and insight. 

If you any further questions, feel free to ask.