Monthly earnings: $500 - $8k

Commercial plumbing can be a lucrative side hustle with varying income potential. Beginners might expect to earn a monthly income ranging from $500 to $2,000, while experienced individuals could make anywhere from $2,500 to $8,000. Income levels are influenced by factors such as time invested per week, skill level and niche specialization, access to clients and tools, and how earnings tend to scale over time. Those starting out typically earn at the lower end, focusing on basic plumbing services, while experienced plumbers who specialize in complex commercial projects tend to reach the higher income bracket.