A B- General Residential Contractor must subcontract what type of work?

A B- General Residential Contractor is responsible for a wide range of general contracting work related to residential construction but is required to subcontract specific trades to ensure compliance with safety standards, regulations, and expertise requirements.

Plumbing and electrical work involve systems that are governed by stringent codes and regulations; thus, a contractor generally needs to hire licensed professionals to perform this type of work. Specifically, plumbing and heating require licenses because improper installation can lead to significant safety hazards, including flooding or exposure to toxic gases. Additionally, work on boilers and water wells involves specialized knowledge and skills, making it essential for licensed contractors to handle these tasks.

This requirement ensures that the work is performed safely and meets all legal and regulatory standards set forth by the Arizona Registrar of Contractors. Therefore, the correct answer highlights the necessity for a B- General Residential Contractor to subcontract plumbing, electrical, boiler, and water well work to ensure that these critical systems are installed correctly and safely.