House committee substitute amends the 1st edition as follows. 

Modifies the proposed changes to GS 143-138(b5), concerning the permitting exception set out for any construction, installation, repair, replacement, or alteration performed in accordance with the current NC State Building Code in any single family residence or farm building that does not exceed a cost threshold, currently set at $15,000, as follows. Now increases the threshold from $15,000 to $20,000, effective October 1, 2021, applicable to any construction, installation, repair, replacement, or alteration on single family residences or farm buildings occurring on or after that date (the previous edition gradually increased the cost threshold every year from 2021 through 2025, with the threshold set at $20,000 on October 1, 2025). Makes additional technical changes.