Which entity must approve alterations to structural, mechanical, or electrical systems of a mobilehome bearing a HUD label?

The correct answer is that the Department of Housing and Community Development (HCD) must approve alterations to structural, mechanical, or electrical systems of a mobilehome bearing a HUD label. This requirement is in place because homes with a HUD label are constructed to federal standards regulated by the U.S. Department of Housing and Urban Development. Any modifications made to these homes need to align with both federal regulations and state laws, ensuring safety and integrity.

The HCD plays a crucial role in maintaining compliance with the codes and regulations that govern mobile and manufactured homes. This includes ensuring that any structural, mechanical, or electrical alterations do not compromise the home’s safety or functionality as determined by the original federal standards.

While local building departments may regulate construction and safety standards within their respective jurisdictions, they do not have the authority to approve changes to a mobilehome already under the federal HUD jurisdiction. Moreover, while a manufacturer could be involved in modifications or may need to be consulted for advice on proper compliance, they cannot singlehandedly authorize changes. Local authorities may handle certain local policies but do not supersede HUD's requirements for homes marked with a HUD label. Thus, approval from the HCD is essential for these alterations.