House committee substitute to the 1st edition makes the following changes. 

Expands scope of new GS 160D-1110.1 to include residential building plans in those types of permit applications where the government must issue applicable building permit plan decisions within 21 business days (was, just 21 days) unless otherwise agreed by all parties.  Now requires the local government to issue all applicable permits within 10 business days (was, 15 days) after receiving additional requested information or a resubmitted plan with changes from the permit applicant. Clarifies that the third-party reviews available for local governments and permit applicants under subsections (b) and (c) respectively, are independent and should be done through contract with the Department of Insurance and its marketplace pool of qualified Code-enforcement officials. Specifies that if the permit applicant elects to have an engineer or architect to perform an independent third-party plan review, it must contract for such services, not hire those individuals. Changes the time a local government has to issue an applicable permit when it completes a plan review with certification from 72 hours to three business days.  Adds new GS 160D-1110.1(e), which requires a third-party plan reviewer to avoid conflicts of interest in conducting independent third-party plan reviews under subsections (b) and (c). Specifies that conflicts of interest include a plan reviewer having any financial interest in or being employed, other than as a plan reviewer under this section, by a business that has a financial interest in, the furnishing of labor, material, or appliances for the construction, alteration, or maintenance of, or any involvement in the making of plans or specifications for, the project subject to plan review.

Makes organizational and conforming changes. Makes conforming changes to the act’s long title.