Lomita had 20,715 residents in 2018 (SCAG), tucked between Torrance and the Palos Verdes hills. It is small enough that the details matter: the city now runs its own permit office, the water supply is not one-size-fits-all, and the houses run from 1930s cottages to mobile home parks. Neighboring cities have their own entries under the areas overview; for what a visit looks like in general, see plumber service in Torrance.
Who issues plumbing permits in Lomita now?
The City of Lomita does. Its Community and Economic Development page says the city is now providing all Building and Safety services and that Los Angeles County no longer does. The division issues plumbing permits and inspects the work. Some directory listings still point to the county, so go by the city page.
Contact details published by the city: Building and Safety is at 24320 S. Narbonne Avenue, phone (310) 304-3788, email [email protected]. The page links an online permit option but does not spell out fees or hours for the division, so ask before you go in. Contractors normally file; in California, a replacement water heater counts as permit work. The statewide view is in water heater permits.
Why is Lomita housing older than the cities around it?
Because a larger slice dates from before the 1950s boom. The SCAG 2019 Local Profile reports 62.5 percent of housing built before 1970, and its age chart shows 12.0 percent from before 1940, 8.0 percent from the 1940s, 21.1 percent from the 1950s and 21.4 percent from the 1960s.
Expect different materials side by side. A cottage from the 1930s may have had its supply pipes replaced long ago while older waste lines remain in the ground. Postwar houses come with galvanized or copper lines. The point is to ask what has been replaced, because most houses here are a mix. Galvanized pipe replacement and PEX against copper help you plan a swap.
What does Lomita's housing mix mean for repairs?
It is closer to even than in its neighbors. SCAG counts 49.4 percent detached houses, 9.2 percent attached, 5.5 percent in two-to-four-unit buildings, 28.6 percent in larger apartment buildings, and 621 mobile home units (7.3 percent). Homeownership was 45.8 percent in 2018.
So a Lomita plumbing call could be a cottage, a unit in a small complex or a mobile home. Each has its own question about who owns the pipe. For a rental, a landlord decides; for a mobile home, ask park management where its lines stop. Mention your situation when you call so we can plan the visit around it. Park residents may also like the mobile home plumbing guide.
Where does Lomita's water come from?
From Cal Water, at least in part, and the supplier can vary by address. Cal Water's city list files Lomita under its Rancho Dominguez District, while its Palos Verdes system report says that system serves a portion of Lomita. Your bill shows which applies to you.
The Palos Verdes system buys surface water from the Metropolitan Water District. Its 2025 report lists hardness of 189 to 280 ppm, averaging 234, a band the report calls hard. It also says it has no known lead service lines. We did not find a hardness figure for the other Cal Water district's Lomita customers, so ask for that report if your bill says Rancho Dominguez. Hard water scale is covered in keeping scale off fixtures.
What should a Lomita resident do about a gas leak?
SoCalGas lists Lomita among the cities it serves. If you suspect a leak, walk out of the property, then reach the utility at 1-800-427-2200 from the street or a neighbor's. A 911 call is right when anyone is at risk. Lights, switches and doorbells inside can all spark, so leave them alone, and do not try to trace the leak yourself.
Once the emergency is over, work on a gas line or appliance is contractor-only work done under permit. A contractor license is required by state rules, and the CSLB site lets you verify any number. Old connectors and valves deserve a look whenever a plumber is already on site. Our guide to gas line plumbing outlines the work, while seismic gas valves are explained separately.
How much should plumbing cost in Lomita?
The same ranges as the rest of the South Bay apply, and the real swing is what is behind the wall. A modest fixture repair is cheap; a cottage with mixed pipe ages may need exploration first. Use plumber costs in the South Bay as a guide, and read the written quote for permit, materials and repair of whatever has to be opened.
How does a Lomita visit work?
Begin with the quote form or a weekday call, 9am to 5pm. After a local plumber inspects the property you receive a written price, and nothing starts until you agree. Say whether you rent, own or live in a park, and what you can see or hear, so the visit starts informed. More services appear on the front page.
Common questions
Does Lomita have its own building department?
Yes. The city says it now provides all Building and Safety services, replacing Los Angeles County. Plumbing permits go through the city division at 24320 S. Narbonne Avenue. Some online directories are out of date, so check the city's own page for the current process, fees and contact details.
How hard is tap water in Lomita?
On the Palos Verdes system it is, with a 2025 average of 234 ppm and a range of 189 to 280 ppm. Other Lomita addresses may be on a different Cal Water district, and we did not find a hardness figure for that one. Scale collects in heaters and on fixtures, so a tank flush helps.
Smell gas in Lomita: who gets the call?
SoCalGas, at 1-800-427-2200, once everyone is out of the building. Switch nothing on or off, and add 911 where there is danger. Pipe or appliance repair afterward goes to a plumber holding the correct contractor license, under a city permit.
What kinds of homes does Lomita have?
A varied mix: about half detached houses, some attached homes and small buildings, 28.6 percent in larger complexes and 621 mobile home units, per the SCAG profile. Over 62 percent date from before 1970, so mixed old and new pipe is common and worth asking about before a quote.
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