Can the manager force a resident to first offer their home for sale to the park?

It depends on the rental agreement. The MRL provides that a park rental agreement entered into on or after January 1, 2006, shall not include a provision or rule or regulation requiring homeowners to grant the park the right of first refusal to buy their homes on resale. (Civil Code §798.19.5) Hence, if the homeowner entered into a lease on or after January 1, 2006, or is on a month-to-month tenancy, the park could not enforce a right of first refusal to buy the home. However, homeowners may be subject to such a park right of first refusal if they signed a long-term lease with such a provision before January 1, 2006, and that lease has not yet expired. Additionally, the law does not prevent a homeowner and the park from entering into a separate agreement, apart from the lease, for the right
of first refusal where the homeowner obtains consideration or compensation from the park for that right.

Recap:
● Check the rental or lease agreement for details on whether the park has the right of first refusal to buy the mobilehome.