What counts as a plumbing installation, from a new sink to a rough-in
The common jobs are new fixtures such as sinks, toilets, showers and tubs, laundry hookups for a washer, outdoor spigots, water line extensions, gas appliance connections and sump or ejector pumps. Remodels add relocations, where a fixture moves to a new wall and its supply and drain move with it. New construction adds rough-in plumbing, the pipe set inside open framing before drywall.
A fixture swap in the same spot is the simplest case, because supply and drain connections already exist. Moving a fixture is harder. A drain needs slope to carry waste, a vent so it does not gurgle or siphon, and enough pipe diameter. That is why a relocation is more than just running a new line.
If you smell gas: leave first, then call
Natural gas leaves a rotten egg smell added for safety. If you smell it, do not look for the source. Leave the building at once, leave the door open if you can do so safely, and do not flip switches, use a phone inside or light anything. From a safe distance, call 911 or your gas utility. For Colton, the City lists Southern California Gas Company as the gas provider.
Call a plumber only after the gas utility has made the area safe. We do not promise a gas response time, because the utility handles the emergency shutoff and the first safety check. Once it is safe, we can inspect the gas piping, find the leak and repair or replace it. We do not do electrical work, and appliance gas connections must be tested before use.
Common installation jobs and what each one involves
Permits and inspections vary by job, so confirm with the City before work starts.
| Job | What the work involves | Permit and inspection |
|---|---|---|
| Fixture swap in the same spot | Shut off supply, remove the old fixture, connect and test the new one | Often minor, ask the Building Division |
| Fixture relocation | New supply, drain and vent runs in the wall or floor | Usually a permit with rough and final inspection |
| Laundry hookup | Supply valves, a standpipe drain and a trap | Ask the Building Division if new pipe is added |
| Gas line extension | New gas pipe, sizing check and pressure test | A permit and inspection are typical |
| Sump or ejector pump | Basin, pump, check valve and discharge pipe | Ask the Building Division about discharge rules |
These are general descriptions. The City decides what your specific job needs.
Gas line leak checks, inspections and new gas piping
After the gas utility has cleared the area, a plumber can inspect gas piping inside the home. The standard checks are a visual look for corrosion, damaged flex connectors and missing shutoffs, and a pressure test of the piping with the appliances isolated. Soap solution on joints shows bubbles where gas escapes, and an electronic detector confirms small leaks.
New gas piping must be sized for the total load of every appliance on the line. Tankless water heaters are a good example. The City of Colton's water heater permit page notes that a tankless unit can need up to five times the BTU input of a standard heater, so the existing gas line may need to be upsized. See our water heater installation page for that work.
Gas piping work is not for the homeowner. Ask the Building Division which permit and inspection apply, and do not use a gas appliance until the connection has been tested.
What to prepare before the installation visit
A few details speed up the quote and reduce surprises.
- The fixture or appliance itself. Buy or pick the model first when possible, since rough-in dimensions and connection types vary by model.
- Photos of the current setup. Show the shutoff valves, the drain location and the wall or cabinet around the spot.
- Access and clearance. Clear the area under the sink, behind the washer or around the planned wall.
- Gas details. Note the appliance type, its input rating and where the gas line enters, if gas is involved.
- Questions about permits. Tell us what you want to do so we can say what is likely to need a permit and an inspection.
- HOA or landlord approval. Renters and HOA residents may need written permission before work.
From rough-in to final inspection: how a permitted job moves
A permitted installation usually follows the same path from planning to a signed-off final.
- Plan and pull the permit. The scope is set and the permit is applied for with the Building Division when one is required.
- Rough-in. Pipes, drains and vents are installed in open walls or floors, then tested for leaks before they are covered.
- Rough inspection. An inspector checks the concealed work before drywall or concrete goes over it.
- Set fixtures and connect. Fixtures, valves, appliances and trim are installed and every connection is checked.
- Final inspection and test. The finished work is inspected, then the system is run under normal use to confirm there are no leaks.
What affects the cost of a plumbing installation
Installation prices vary a lot because no two sites are alike. We look at the site and give a written price after we understand the scope.
New construction, sump pumps, laundry rooms and outdoor spigots
New construction plumbing starts with the layout. A rough-in plan sets fixture locations, drain slope and vent paths before framing closes. Mistakes here are expensive, since moving a drain after the slab is poured means cutting concrete. Builders and owner-builders should confirm the plan with the Building Division before work starts.
A sump or ejector pump moves water or waste up from a low point to the main drain or discharge location. The pump needs a clean, level basin, a working check valve to stop backflow, and a discharge line routed where the City allows. Test the pump once a season by pouring water in and watching it run.
Laundry hookups need a trap, a standpipe at the right height and shutoff valves you can reach. An outdoor spigot should have a shutoff inside the wall and a vacuum breaker to stop backflow into the house supply. Aging pipe is a separate question, and our repiping page covers that.
Permits, inspection timing and hard water in Colton
Building permits in Colton go through the Development Services Department's Building Division, located at North La Cadena Drive. The City's inspection scheduling closes at 4 pm for inspections the following day, so plan your timing around that when a job needs a rough or final inspection. Colton adopted the 2019 California codes in 2020, and the state has since issued newer Plumbing Code editions, so ask the Building Division which edition applies to your job.
The City's 2024 water quality report lists average hardness near 207 mg/L, which is about 12 grains per gallon. New fixtures, faucets and appliances collect scale faster in hard water. If you are adding a water heater or dishwasher, ask about our water softener and filtration work. We also take installation calls from Loma Linda and nearby towns.
Frequently asked questions
Leave the building right away and call 911 or your gas utility from a safe distance. Do not use switches or phones inside. Call a plumber only after the utility says the area is safe.
The City of Colton lists Southern California Gas Company as the gas provider. Check your own bill to confirm who serves your address.
It depends on the job. A same-spot swap may not need one, while moving a fixture or adding gas piping often does. Ask the City of Colton Building Division.
It is an inspection of pipes, drains and vents after they are installed but before walls or floors cover them. The inspector checks sizing, slope and support. The final inspection happens after fixtures are set.
The City's page says to call by 4 pm to schedule an inspection for the following day. Confirm the current process with the Building Division when you apply.
Yes in most cases, but the drain needs slope and a vent. Moving a fixture away from the existing drain adds pipe work and may require cutting the floor. We assess the route before quoting.
Yes, including the basin, pump, check valve and discharge piping. Discharge rules vary, so ask the Building Division where the water may go.
Gas appliance connections should be made and pressure tested by a licensed professional. Make sure the existing gas line is sized for the appliance.