Are developers required by law to pay common service fees on unsold plots in a development before a JP or put another way share the cost of common services?

Yes they are.

 

I attach a JPEG detailing the responsibilities of both co -owners and developers.

 

The last paragraph  references e the developers responsibilities.

 

Thank you Delight for responding to my post. Apologies if my post was not clear. My interest is in landed property within a Moo Baan governed by the Land Allocation Act rather than a condominium and whether the expense of common services before the establishment of a JP is shared between the buyers and the developer while there are unsold plots, similar to a condo project.

 There is no equivalent of the Condominium Act pertaining to walled off housing estates.

So no requirement for a JPM.

If the project is a Juristic Person -then that status protects the individual land owners from being sued for unpaid external bills.

That is the prime benefit of Juristic Person status