## RA2.8 Installer Requirements and HERS Procedures for Alterations

This section on alterations describes the differences that apply to alterations. Otherwise the procedures and requirements detailed in previous sections of Appendix RA2 shall also apply to alterations. For alterations, building owners or their agents may carry out the actions that are assigned to builders in previous sections of Appendix RA2.

Applicable procedures for registration of compliance documents described in Appendix RA2 shall also apply to alterations.

When compliance for an alteration requires field verification and diagnostic testing, the building owner may choose for the field verification and diagnostic testing to be completed for the dwelling unit individually, or alternatively, as part of a designated sample group of dwelling units for which the same installing company has completed work that requires HERS verification for compliance.

When sampling is utilized for HERS verification compliance for alterations, the dwelling units in a designated sample group are not required to be located within the same enforcement agency jurisdiction. However, to enable the enforcement agency to schedule testing to accomplish the corroboration of field verification and diagnostic testing procedures performed by the building owner, subcontractors, or certified HERS Rater as described in Section RA2.4.4, the enforcement agency may require that a separate dwelling unit from the sample group that is located within its jurisdiction be tested.

The building owner or agent of the building owner shall submit, or make arrangements for submittal of the required Certificate of Compliance information to the HERS Provider data registry to complete the applicable Certificate of Compliance documentation in accordance with the requirements in Standards Section 10-103(a)1 and 10-103(a)2.

When the enforcement agency does not require building design plans to be submitted with the application for a building permit for an alteration, the applicable registered Certificate of Compliance documentation specified in 10-103(a)1 is not required to be approved by the enforcement agency prior to issuance of a building permit, but shall be approved by the enforcement agency prior to final inspection of the dwelling unit, and shall be made available to the enforcement agency for all applicable inspections as specified in Standards Section 10-103(a)2A.

HERS Raters or other authorized users of the HERS Provider data registry may provide documentation author support to facilitate the submittal of the required Certificate of Compliance information to the HERS Provider data registry on behalf of the building owner or agent of the building owner, when such facilitation has been authorized by the building owner or agent of the building owner. Documentation authors shall provide an electronic signature to certify the documentation is accurate and complete. The building owner or agent of the building owner who is eligible under Division 3 of the Business and Professions Code to take responsibility for the design specification for the alteration shall provide an electronic signature to register the Certificate of Compliance, to certify the information provided on the Certificate is true and correct, to certify conformance with Part 6, and shall submit the registered Certificate of Compliance to the enforcement agency for approval.

The building owner or agent shall make available to the HERS Rater a copy of the registered Certificate of Compliance approved by the enforcement agency.

The installer shall perform diagnostic testing and the procedures specified in Section RA2.5.

When the installation is complete, the person responsible for the performance of the installation shall complete the Certificate of Installation in accordance with the procedures specified in Section RA2.5.

The HERS Rater shall perform the applicable verification and diagnostic testing required for compliance following the procedures in Section RA2.6. If group sampling is utilized for compliance, the sampling procedures described in Section RA2.6.3 for sampling of a ”closed” group of up to seven dwelling units shall be used, requiring that all dwelling units within the group have been serviced by the same installing company. The installing company may request a group for sampling that is smaller than seven dwelling units. Whenever a HERS Rater for the group is changed, a new group shall be established.

Re-sampling, full testing, and corrective action shall be completed, if necessary, as specified by Section RA2.6.4.

The enforcement agency shall not approve the alteration until the enforcement agency has received a completed Certificate of Installation as specified in Section RA2.5, and a completed Certificate of Verification as specified in Section RA2.6.

Third Party Quality Control Programs, as specified in Section RA2.7, may also be used with alterations, and shall be limited to “closed” sample group sizes of thirty dwelling units or less.

When a Third Party Quality Control Program is used, the enforcement agency may approve compliance based on the Certificate of Installation, where data checking has indicated that the unit complies, on the condition that if the required HERS verification procedures determine that re-sampling, full testing, or corrective action is necessary, such work shall be completed.