If it's a "TRAVEL/HOUSE/RV TRAILER" chances are there are not too many building jurisdictions that all permit the long term habitation of it. If you are going to build a home on the property you may be able to obtain a TEMPORARY PERMIT to reside in the TRAVEL TRAILER on site during the construction process. However, these are temporary permits that are issued for short term periods usually in 6 month increments which can be renewed under certain conditions.
If it's a "FACTORY BUILT HUD MANUFACTURED HOME" it will depend on the zoning, building ordinances and "CODES, CONDITIONS & RESTRICTIONS" (CC&R'S) of the neighborhood you are seeking to build in should there be any.
But do be careful with a HUD MANUFACTURED HOME in any event. Once the construction/installation & set up of the home has been completed and you need to take out the construction loan for a mortgage loan you may have a problem getting comps unless there are other HUD MANUFACTURED HOMES in the immediate neighborhood.
I've seen a lot of folks get stung whence the appraiser only has HUD MANUFACTURED HOMES in a "MOBILE/MANUFACTURED HOME PARK/COMMUNITY" to use for comps. This happens often and can end up costing the homeowner his home and land as he doesn't ave the ability to pay for it unless he can secure financing.
Lastly, if it's a "FACTORY BUILT MODULAR HOME" you shouldn't have any problem getting it permitted as long as it complies with the "CC&R's" in the neighborhood you are seeking to build it in. "FACTORY BUILT MODULAR HOMES" can be finished out with stucco exteriors, tile roofs curvilinear architectural details, etc and can be made to look like any of the other homes in that specific community.
But if there are strict "CC&R's" you will still have to get your plans approved by the "HOMEOWNERS ASSOCIATION" governing that particular neighborhood which can be challenging. That stated you can also have the same options available in a "FACTORY BUILT HUD MANUFACTURED HOME", however, the same conditions apply as noted above regarding final appraised value and comps.
BTW, if you do install a "FACTORY BUILT MODULAR HOME" it is not a "DEPRECIATING ASSET". It is considered a "HOME" just like any other home in that community and is treated as such by the building jurisdictions, appraisers, lenders, inspectors, etc. Hope you find this information helpful.
It will depend on where you are looking. Many of the Bay Area cities have very specific building code requirements and often trailers do not meet these requirements. In addition many of the lots that are available for sale in Oakland for example are located on slopes and would not allow for a trailer.
Hope that helps!
Alain Pinel Realtors
The short answer is, yes if it's appropriate for the area.
The slightly longer answer is it depends on where the land is, the zoning, the land's capacity to connect to water or a well, sewer or have a septic system built and several other factors.
As a general rule, trailers are depreciating assets. The value of the land may go up, but the trailer will go down.