Modifying a Mobilehome:  Manufactured or Mobilehome Alteration, Permit Requirements, and Inspections

Before beginning any work on your manufactured home or mobilehome, these permit application  (PDF) to apply for a permit.

The Department must review and approve plans and specifications for the alteration or conversion of manufactured homes, multi-unit manufactured homes, commercial modulars, and special purpose commercial modulars.  Department employees perform on-site inspections of alterations and conversions to the structural, fire safety, plumbing, mechanical, and electrical systems of regulated units.

Approved Plans

To review all requirements for submission of the listed forms or plans and their associated fees please review the appropriate section of the Mobilehome Parks and Installations regulations  or Special Occupancy Parks regulations .

These plans and specifications have been preapproved by the Department. They are valid for the purpose of obtaining a construction permit when the design loads and allowable soil conditions specified in the plans are consistent with the requirements for the locality. Any alteration to a plan without Department approval will render the plan invalid.


Fees will be charged for these preliminary plan check meetings as a technical service fee ($196.00 per hour, $196.00 minimum).


Ombudsman Request for Assistance (Complaint Forms) 


Permits & Inspections

If any of the following changes have been performed without a valid permit, you are encouraged to obtain a permit prior to the Department's park inspection in order to avoid possible penalties:

Installation, construction, or alteration of:

  1. Any building, structure, or accessory building;
  2. Any electrical, mechanical, or plumbing equipment;
  3. Any fuel gas equipment;
  4. Any fire protection equipment within the unit.
  5. Any alteration to a mobilehome unit requires a permit from the Department of Housing and Community Development.

Any alteration to an mobilehome unit requires a permit from the Department of Housing and Community Development.

Information Bulletins

Check Information Bulletins frequently for additional information pertaining to modifying a manufactured/mobilehome.