Plenty of plumbing problems are fair game for a homeowner with a wrench and some patience. The line gets crossed when water is under pressure inside a wall, when gas is involved, or when the job needs a permit. California law also sets a middle line, for the handyman you might hire instead of a plumber, and most people have never heard of it. Here’s how we’d sort the jobs, from a company that does this work every weekday from 8 AM to 5 PM.

One category sits outside both DIY and our own work: a drain that a plunger won’t clear. We send clogged drains to Drain Mob, a company that handles drain and sewer lines only.

Repairs You Can Usually Handle Yourself

These jobs are low risk, need ordinary tools, and are easy to undo if something goes wrong. Before you start any of them, close the small shutoff valve under that fixture and open the faucet to drain the line.

• A toilet that runs or refills on its own. The flapper in the tank is the usual suspect. To confirm, add a little dye to the tank and watch whether the bowl changes color without a flush. A new flapper costs a few dollars and goes on by hand.
• A weak faucet. Unscrew the aerator at the tip of the spout and rinse out the grit and white crust. San Diego’s hard water builds this up quickly.
• A jammed garbage disposal. Turn the switch off first. Most units take a hex key in a socket on the bottom: work it back and forth to free the grinding plate, then press the red reset button. Our technicians often show customers this trick before they leave, so the next jam doesn’t need a service call.
• Washing machine hoses. Swollen or cracked rubber hoses can burst without warning. Turn off both valves behind the washer, swap in braided stainless hoses, and check the connections for drips.
• A toilet that’s simply clogged. A flange plunger and steady pressure clear most of them. Skip the chemical drain cleaner, since it can harm old pipe and the person who opens the line next.

If any of these turn into something bigger, stop. A valve that won’t close or a fitting that starts dripping at the threads is the moment to call.

What a Handyman Is Allowed to Take On

Hiring a handyman for a plumbing job is legal in California, within limits. The rules changed on January 1, 2025. Under them, the Contractors State License Board allows an unlicensed person to take a small project only when all three hold:

1. The total price, counting labor, materials and everything else, is under $1,000.
2. They don’t hire workers to help.
3. The job doesn’t need a building permit.

Break any one of those and the work needs a contractor licensed in the right classification. The CSLB also says an unlicensed person who advertises has to state that they aren’t licensed. Its general advice for any home improvement job applies here too: don’t pay more than 10 percent of the contract price as a down payment. The details are in the CSLB announcement of the new limit.

The permit rule is the one that catches people. Within San Diego city limits, replacing a tank water heater takes a permit, so a handyman can’t legally swap your water heater even when the price would come in under $1,000. Before you hire anyone for plumbing, look up their license number on the CSLB website. Ours is CSLB #910268.

Jobs That Belong to a Licensed Plumber

Old work is often where the trouble starts. One customer called us about a leaking toilet drain and found it had been worked on by a previous owner. On another call, our technician told the owner not to flush a water heater that was near the end of its life. Stirring up years of sediment and opening an aging drain valve can start a leak that wasn’t there before.

If Something Fails After 5 PM or on a Weekend

We work weekdays, so here’s how to hold things together until the next business morning. A leak almost always stops once you close the nearest valve. That might be the stop under the sink or behind the toilet, the inlet valve on the cold pipe above the water heater, or the main shutoff for the house. Learn where each one is before you need it. Our Rolando page walks through every valve in an older house and how to tell when one is due for replacement.

Gas is different. If you smell it, don’t touch switches or try to find the source. Get everyone outside, then phone 911 or SDG&E’s gas line, 1-800-411-7343.

We’ve been at this since 2007, when master plumber Tony Misleh opened our doors. When a job is past what you want to tackle yourself, ring the office at (858) 567-0544 on a weekday, or send a short description of the job with the Contact Us form.