ENGINEER'S CERTIFICATIONS AND FOUNDATION REPAIR On any FHA-insured loans other than Streamlines, the opinion of a professional engineer certifying that the foundation supporting the manufactured homes meets a national quality standard is required. The Engineer's Certification must stipulate that the manufactured home's structural foundation complies with the standards set forth in the HUD PERMANENT FOUNDATION GUIDE FOR MANUFACTURED HOMES (PFGMH) as well as any attached structures, room additions or modifications. The reason for this requirement is to establish a national standard of consistency amidst inconsistent state installation standards. While manufactured homes have standardized preemptive structural, plumbing, and electrical standards that need to be met before leaving the factory, installation standards vary from county to county, state to state. Since the individual jurisdictional requirements vary signficantly, the Engineer Certification Letter or Affidavit helps to provide a standard of excellence. If an existing home is already on a foundation, an engineer can provide a certification attesting to the fact that the home meets the guidelines. If it does not meet the HUD guidelines, there are a variety of proprietary or approved engineered foundation systems that can be retrofitted in combination with the existing structural components. MH-Lending has a national network of engineers to provide the evaluations and certifications.