A general plumbing inspection runs about $178 to $638 nationally, according to Thumbtack's October 2026 guide, while an annual backflow test is a much smaller charge, commonly $75 to $150 per device. A sewer camera scan, a permit inspection and a gas pressure test each follow different rules. Read on to see which one you need before you ask for a number. Gas pipework has its own page, gas plumbing, and other services are listed on the Harbor Lights home page.
Which kind of inspection am I paying for?
Four different things share the name. A plumber's checkup looks at pipes, fixtures, pressure and the water heater. A camera scan sends a lens down the sewer line. The city's permit inspection is done by a building inspector after permitted work. A backflow test checks the one-way protection on an irrigation line or similar connection.
Sorting that out before you call saves money, because quotes only compare when the scope matches. A buyer in escrow on a 1930s Bixby Knolls bungalow wants the checkup plus the camera. A homeowner replacing a water heater needs the city inspection that comes with the permit, which is usually bundled by the contractor. A property with a lawn sprinkler fed straight from the house line may owe a yearly backflow test. Someone with a mobile home has its own checklist.
How much does a plumber's general inspection cost?
Thumbtack's national range is $178 to $638, with a low of $72 and a high of $1,570, and the page says the spread comes from labor and materials. Examples in the guide include a $229 visual inspection from one Phoenix provider. Larger or older homes, and add-ons such as pressure testing, sit at the upper end.
What you get for the money varies. A visual pass covers visible supply and drain lines, shutoffs, faucets, the water heater and signs of past leaks. Shutoff valves that seize, supply lines past their age, galvanized pipe, and a water heater without earthquake strapping are the typical flags. Ask for a written list. If findings point toward a bigger job, the numbers on repiping a whole house and on plumber rates help you judge the follow-up quote.
What will a sewer camera inspection run?
The Thumbtack guide offers one data point rather than a range: a $300 camera inspection from a provider in Texas, and a $500 package of visual plus camera from the same one. That is an anecdote, not a Long Beach price. Quotes swing with how far the camera must travel and if the cleanout sits somewhere convenient.
A camera is worth it in older Long Beach neighborhoods, where the lateral between house and street may be decades old. Long Beach Utilities names tree roots, pipe failures and grease as the three most common causes of sewer backups, and a scan shows which of them you have. Ask for the video and a note of the footage mark where any defect appears. Some providers pair it with a smoke test to trace leaks.
What does the city charge to inspect plumbing work?
The City of Long Beach does not list plumbing permit fees on its plumbing page; that page links to a separate fee schedule, which is where the dollar figures live. What it does state: plumbing, gas or drainage piping, and fixtures, need a permit whenever they are installed, altered, repaired or replaced, with narrow exceptions.
Inspections are part of that permit. Water piping must hold street main pressure, or 50 psi of air, without leaking, and the inspector witnesses the test. A gas air test holds 10 psi for at least 15 minutes. New gas pipe over six feet in length needs a permit, while a short connection of six feet or less within a room does not. Homeowners of one- or two-unit homes can pull their own permit if they live there, do the work and sign a workers' compensation statement. Permits lapse when work has not begun after 180 days. In San Pedro and Wilmington, which sit inside Los Angeles city limits, permits run through that city's own building department and the fees differ. Contractors usually fold the permit cost into the quote; Thumbtack suggests budgeting $50 to $200 on a water heater swap. Our gas line cost page covers the gas side.
How much is the annual backflow test, and who may perform it?
Public Works in Los Angeles County puts a test near $75 to $150 for each device. Providers in Long Beach advertised roughly $89 to $90 a device when we checked in November 2026. Repairs are extra. State rules mean one test every twelve months by a tester the county approves, which rules out doing it yourself.
The County page describes the sequence: the property owner is responsible when state rules require a device, the tester fills out a form, and the results go to the water supplier before the due date or a shutoff notice can follow. Not every house needs a device. Irrigation systems, pools and fire sprinklers are typical places where one is installed. Who requires what in Long Beach should be confirmed with Long Beach Utilities at (562) 570-2300 before you pay for anything. Our pages on backflow prevention testing and on testing a sprinkler system go further, and businesses should read commercial backflow testing.
Common questions
Is a home plumbing inspection worth paying for before I buy?
In older housing near the harbor, yes, since the costly faults hide from view: corroded supply lines, drains on their way out and a tank heater past its life. Spending a few hundred on a report beats learning about a repipe after closing day. Add a sewer camera scan when the lateral looks old.
What does an inspection report usually tell me?
A decent report lists each fixture and line checked, pressure readings, the age and condition of the water heater, shutoffs that fail to turn, visible leaks and corrosion, and anything that would not pass city rules today. Ask for photos and for repair items to be ranked by urgency, so you can budget the first year.
Does a camera scan hurt my pipes or take long?
No. A little camera on a flexible cable moves through the pipe without cutting into it. It needs an open cleanout or a fixture to enter through, and how long the scan takes depends on the length of the line and how easy access is. Price follows the same pair of factors, and the plumber can confirm after seeing the site.
Who pays for the permit inspection on a plumbing job?
Typically the contractor builds it into the quote and the permit fee flows through to you. See that the paperwork lists the permit and the inspection together. Leaving one out can complicate a future sale, and Long Beach applies its permit rule to most piping and water heater replacements. Ask who books the inspector.
How frequently must a backflow assembly be tested?
Annually, performed by an approved tester. County Public Works in Los Angeles says state law demands it. Miss the due date and a shutoff notice may follow, so file the completed test form with the water supplier and keep a copy.
References
- Thumbtack, plumbing inspection cost guide (updated October 2026)
- Thumbtack, water heater replacement cost (permit allowance)
- City of Long Beach, plumbing permit requirements
- Los Angeles County Public Works, backflow prevention program
- Long Beach Utilities, healthy sewers
- Long Beach Utilities, high water bills and contact numbers
- Published prices of Long Beach backflow testing providers, checked November 2026
Updated