The permit line in Herriman
The city says repair and maintenance of existing plumbing does not need a permit, but adding new plumbing lines to a home or detached structure does. Replacing or adding a water heater also requires one. Permit rules vary, so ask the Herriman building department about your specific project before work starts.
Does this job need a permit?
Use this table to plan, not as a legal ruling. The building department has the final word.
| Project | Likely category | What to do |
|---|---|---|
| Replace a faucet or toilet in the same spot | Repair | No permit per the city page |
| Fix a leaking supply line or valve | Repair | No permit per the city page |
| Add a bathroom to a basement | New lines | Permit and inspection |
| Move a kitchen sink across the room | New lines | Permit and inspection |
| Add a laundry hookup or utility sink | New lines | Permit and inspection |
| Install or replace a water heater | Permit required | See water heater installation |
| Gas line to a new appliance | Added gas | Permit and a gas diagram |
| Repipe a house | Gray area | Ask the building department how it is classified |
Unpermitted work can cost double to fix later, and the city notes insurers may refuse claims tied to it.
What goes into a finished-basement bathroom
Basement baths are the most common new installation in Herriman homes. A rough-in includes drain slopes, a vent that reaches above the roofline or ties into an existing vent, and supply lines to each fixture. If the basement floor is below the sewer line, a sewage ejector pit and pump lift waste upward.
Cutting the slab for a drain takes planning around radon mitigation pipes, footing drains and rebar. We mark the layout with you before anyone cuts concrete.
Walking a project from plan to final inspection
Each new installation follows the same sequence, whatever the size.
Walkthrough and scope
We review fixtures, wall locations and the nearest tie-in points for water, drain and vent.
Price and permit plan
You get a clear price, plus a note on which parts need a permit and who requests it.
Rough-in
Lines are run before walls close. Pipe supports, slopes and vent connections are set.
Pressure and drain tests
Supply lines are held under pressure. Drains are water-tested.
Inspection
The city inspects completed rough work. Inspections are weekdays, so we schedule with the building department.
Trim-out
Fixtures, valves and supplies go on, and we test every one.
Inspection requests go in about a business day ahead, so give the schedule some slack.
Planning new fixtures or lines? Call (385) 488-1892 and we will schedule a walkthrough.
Call (385) 488-1892Digging, soils and what Herriman asks of new work
Any trench outside the house starts with a call to Blue Stakes at 811. The utilities mark their lines, but private lines such as water and sewer laterals and sprinkler systems are not marked. Call two to three business days ahead and hand-dig inside the marked tolerance zone.
Herriman requires a soils report for footing excavations because soil types vary across the city. The state geology survey also maps collapsible and expansive soils in parts of north Herriman. Practical takeaway, ask whether a trench or addition needs extra bedding or compaction before you pour or backfill.
Common new-work installs
These are the jobs we see requested most.
Bathroom and half-bath additions
New toilet, sink and shower lines with vent and drain tie-ins. Permit required.
Kitchen and wet bar relocations
Moving a sink, adding a dishwasher or ice maker line, extending drains.
Laundry and utility sinks
Hookups with a standpipe, shutoffs and an adequate drain size.
Outdoor hose bibs and hose bib vacuum breakers
The city recommends a vacuum breaker on every hose bib.
Water treatment hookups
Bypass valves and drain connections for softeners, as in water softener installation.
Gas line extensions
New gas appliances need a permit and a gas diagram.
Backflow and irrigation connections
If culinary water feeds a sprinkler system, Herriman recommends a reduced-pressure zone assembly and annual testing by a certified tester. A swing-line connection can feed either culinary or secondary water, but only one at a time. Secondary water is untreated and not for drinking.
We install the plumbing side of these connections and leave testing to certified testers. Ask the building department which assembly your property needs.
What shapes an installation quote
Installs have more variables than repairs. These drive the price.
- Number of fixturesEach added fixture means more supply, drain and vent runs.
- Distance to existing linesA bathroom directly above or beside an existing stack costs less than one far from any tie-in.
- Slab or wall cuttingConcrete cutting and patching adds labor and a separate trade.
- Fixture selectionSupplied fixtures are usually priced separately from labor.
- Permit and inspection timePlan review and weekday inspections affect the schedule even if they do not change the plumbing.
Insurance generally does not cover planned remodel plumbing, but it may cover sudden water damage from a failure after the install. Keep permit paperwork, since insurers may ask for it.
Want your real number? Call (385) 488-1892, describe the room and fixtures, and we will plan a walkthrough.
Installation questions, answered
Do I need a permit for plumbing installation in Herriman?
Per the city, adding plumbing lines requires a permit and repair of existing plumbing does not. Replacing a water heater also needs one. Permit rules vary, so confirm with the Herriman building department.
Can you add a bathroom to my basement?
Yes, if drain slope and vent routing work. If the basement sits below the sewer, a sewage ejector may be needed. We confirm during the walkthrough.
Who pulls the permit?
The city says it can be the property owner, the contractor or a representative of either. We tell you who is responsible before work starts.
Do you supply the fixtures?
We can install fixtures you choose or help you select. Fixtures are usually priced separately from labor, so ask for both numbers.
Will new plumbing lines change my water pressure?
More fixtures share the same supply. Adequate pipe size matters, and a pressure gauge on a hose bib shows where you are starting.
Do you handle electrical for disposals or water heaters?
No. We do plumbing and coordinate with your electrician when a project needs power work.
Do I need a water heater permit when I upgrade?
Yes. See water heater installation for what the city requires, including a gas diagram for tankless units. Also see tankless water heaters for gas line sizing.
Have a remodel plan on paper? Call (385) 488-1892 to talk through the plumbing.
Call (385) 488-1892Sources and standards
The standards and local rules behind this service page are listed below. Rules and fees change, so read the current version before you rely on them.