Commercial plumbing
Commercial plumbing is not residential plumbing at larger scale
Commercial plumbing means the supply, drain, waste and vent systems in restaurants, shops, offices, medical suites and apartment buildings, along with the special equipment those uses need, such as grease interceptors and backflow assemblies. The pipes are bigger, the fixtures are numerous, and the consequences of a stoppage are in lost revenue as well as damage.
A single failed line can affect a dozen fixtures, and a shared stack can carry waste from every floor above. That changes how we diagnose, how we schedule, and how we work around customers and tenants.
Commercial work is held to the same California Plumbing Code, itself based on the Uniform Plumbing Code (UPC), and tenant improvements add their own inspection steps, so ask the Manhattan Beach building department what your space needs.
When a business has a backup, a burst line or no water at close
A kitchen drain backing up during service, a restroom flooding, or a burst line in a ceiling are emergencies for a business. Our after-hours line runs 24/7, and we book same-day service when available, including nights and weekends.
What you do in the first few minutes limits the loss. Protect people first and property second.
While you wait for the plumber
- Close the restrooms or the kitchen that is affected and keep customers and staff out of standing water.
- Shut the nearest isolation valve. If you do not know where it is, close the main water shutoff, usually near the meter or the building entry.
- Do not run more water down a backed-up line. Stop dishwashers, mop sinks and ice machines that feed it.
- Photograph the damage and note when it started, for the insurance claim.
- Tell the property manager or landlord right away if the building is shared.
Who is responsible, tenant or landlord
The answer depends on your lease, but this is a general pattern. Always read the lease and ask the owner, because the details vary.
| Item | Often the tenant's concern | Often the landlord's concern |
|---|---|---|
| Fixtures inside the suite | Sinks, toilets and faucets you use | Original building fixtures, if the lease says so |
| Branch drains inside the suite | Clogs caused by the tenant's use | Pipe failure from age or defects |
| Shared stacks and mains | Rarely | Usually the owner's |
| Grease interceptor | Often the restaurant tenant | Sometimes, if shared by several tenants |
| Backflow assembly | Depends on the lease and who owns the service | Often the owner for the building service |
| Water damage to neighbors | Depends on cause | Depends on cause |
A plumber can tell you what failed and why, and that report helps both sides apply the lease. We give you a written scope.
Problems we see in business buildings
Different kinds of businesses fail in different ways.
- Restaurants and cafes.
Floor drains that back up, grease-clogged lines and interceptors that overfill. Dish pits and mop sinks run constantly, so small problems escalate during a busy night.
- Retail and offices.
Restroom stoppages, slow floor drains and leaking flush valves. Commercial toilets use a flushometer valve, not a tank, and a worn diaphragm can run all night.
- Medical and salon suites.
Heavy sink use and fine debris clog traps and small lines. Hair and chemical waste call for the right trap and cleaning method.
- Multifamily buildings.
A shared stack that backs up affects the lowest unit first, and the owner needs a quick plan for several tenants at once.
- Water heating and supply.
Large tank or recirculating systems that fail mid-shift, and low pressure on upper floors.
Do not wait for the next shift.
One call gets a plumber on the schedule and a clear price before work starts.
Local corridors
Commercial areas, and why access matters
Manhattan Beach has commercial strips and shopping areas, such as the businesses along Sepulveda Blvd and the Manhattan Village area east of it, and our main office is on Sepulveda Blvd. We name these only as examples of the kind of corridor we serve. Restaurants and retail in places like these share walls, roofs and often drain lines.
Access is the practical point. Shared service corridors, loading hours and landlord keys all affect when a plumber can get to a cleanout, so tell us who holds the key and when the building closes. We can also work after close, so the dining room is clear.
Specialized commercial services
These three are common requests, and they are sections of this page, not separate services.
Grease trap cleaning
A grease interceptor catches fats and oils before they enter the sewer. It needs regular pumping and cleaning, and the frequency depends on kitchen volume. A full trap sends grease into the building line and the City main.
Backflow testing
A backflow preventer keeps contaminated water from flowing back into the potable supply. Assemblies on irrigation, fire lines and some equipment must be tested periodically by a certified tester, and the water provider may require the report. Ask your water provider about its schedule.
Storm drain cleaning
Parking lots, loading docks and roof drains carry rainwater to a storm system. Leaves, trash and sediment clog catch basins and trench drains, and a blocked one floods the lot at the first heavy rain.
Where the issue is a blocked main, we use a hydro jetting pass and a camera, rather than a repeated snake. Heavy line stoppages in a commercial kitchen often call for drain cleaning on a regular schedule.
Manhattan Beach note
Commercial sewer and water rules in Manhattan Beach
The City maintains most sewer main lines, and the lateral from your building to the main belongs to the property owner under Manhattan Beach Municipal Code 5.36.240. Before flushing or cleaning a lateral, the City asks for 24 to 48 hours notice at (310) 802-5304 so the main does not overflow, and after hours you can reach the call center at (310) 802-5000.
Water in the city is a blend of local groundwater and imported surface water. The City's 2023 Annual Water Quality Report gives groundwater hardness at an average of 392 mg/L. That is a reason to check scale in commercial water heaters, ice machines and dishwashers.
Sources: City of Manhattan Beach
Property managers
For property managers and building owners
Managers of several buildings want a few simple things from a plumber: a single point of contact, clear documentation, and a quick response when tenants report an issue. We provide a written scope, photos of the failed part and notes on valve locations for your file.
Planned maintenance saves emergency calls. A yearly camera inspection of the main, scheduled interceptor cleaning, and a check of the water heater anode and the shutoffs will surface problems before a holiday weekend. For a larger renovation, see plumbing installation.
What affects a commercial plumbing quote
A clear price before work starts is the rule, whether the building is a single shop or a multi-tenant property.
Larger lines, grease interceptors and flushometer fixtures take more time and parts.
Working after close or around tenants changes the schedule.
A clean-out clearing is shorter than a damaged section needing excavation or a ceiling opening.
Backflow tests and written reports add documentation work.
Night and weekend dispatch is priced differently, and we tell you before we roll.
Business property and interruption policies vary in what they cover. Ask your insurer about sudden damage versus long-term wear, and keep records.
FAQs
Commercial plumbing questions
Yes. Backups, burst lines and no-water situations are taken 24/7, and we book same-day visits when available. Tell us if the work needs to happen after the business closes.
It depends on your lease and on what failed. Shared lines are usually the owner's. A written report from a plumber helps both sides.
It depends on kitchen volume and trap size. Ask the City of Manhattan Beach or your landlord what cleaning schedule and records apply to your building.
A certified tester checks that the assembly keeps contaminated water from reaching the potable supply. Your water provider may require an annual report.
Yes. We provide a written scope and can coordinate with the manager on access and tenant notice.
Yes, catch basins and trench drains on commercial lots are part of our commercial work.