Plumbing is a highly specialized skill that requires thousands of hours to master, so hiring a licensed and experienced plumber can get a bit costly. Furthermore, plumbers make house calls meaning they invest money and time in other things like vehicles, gas, additional tools, etc.
A regular home’s plumbing system should be checked at least once every 2 years. But if the home is old, new, or has large big trees around it, it is suggested to do more frequent maintenance inspections to make sure everything is in order and to prevent bigger concerns like burst/leaking pipes.
The usual plumbing system maintenance involves pipe and plumbing inspection, looking for signs of damage or corrosion. Faucets, toilets, bathtubs, and sinks around the house (e.g. bathroom, kitchen, garden, laundry room, and garage) may also be checked to ensure proper water pressure.