Clark County Plumbing Permits: What Homeowners Can and Can't Do Themselves

How Plumbing Permits Work in Clark County?

A permit is basically permission from the local government to do certain kinds of work on your home. It comes with an inspection so a trained official can confirm the job meets safety rules. For plumbing, that means checking pipes, connections, venting, and gas before everything gets sealed behind a wall.

A Clark County plumbing permit exists because water and gas systems affect more than just your house. A bad connection can send contaminated water back into the drinking supply or leak gas into a crawl space. The Las Vegas building department and its city counterparts use permits to catch those problems before they hurt anyone.

Most small repairs do not trip the permit rule. The permit requirement usually kicks in once you start moving pipes, adding fixtures, or changing how water and gas travel through the home. Below, we sort out who oversees your address and why these rules were written in the first place.

Which Building Department Handles Your Home

The first thing to figure out is who has authority over your address. Clark County is split among several jurisdictions, and each one runs its own permit office. If you live in unincorporated Clark County, which covers big areas like Spring Valley, Enterprise, Paradise, and Summerlin, the Clark County Building Department handles your permit.

If your home sits inside city limits, a different office takes over. The City of Henderson runs its own building department for homes in Green Valley, Anthem, and Whitney Ranch. The City of North Las Vegas covers Aliante and Elkhorn, and the City of Las Vegas handles neighborhoods inside its boundaries.

This matters because rules, fees, and forms can differ slightly between offices. A homeowner in Henderson should not assume the Clark County process applies to them. When in doubt, check your property tax record or a mapping tool to confirm your jurisdiction before you start any application.

Our team works across all of these offices every week. We know which counter to visit, which portal to log into, and what each department wants to see. That local familiarity saves homeowners a lot of guesswork.

Why Permits Exist for Plumbing Work

Permits are not there to slow you down or collect a fee for no reason. They protect water safety for your family and everyone downstream of your home. Plumbing that fails to meet code can create real hazards that stay hidden for years.

One of the biggest concerns is cross-connection, which is when dirty water can flow backward into clean water lines. This is called backflow, and it can push contaminated water into your drinking supply. Proper installation with the right valves and air gaps prevents it, and inspectors are trained to catch setups that could allow it.

The plumbing code also covers venting, pipe sizing, and slope on drain lines. Get any of those wrong and you end up with sewer gas in the house, slow drains, or standing water. A permit and inspection confirm the work matches the code before it disappears behind drywall.

Gas work carries even higher stakes. A loose fitting or improper vent can lead to a leak, and in the dry desert climate around Las Vegas, small problems can grow quietly. The permit process exists to make sure someone qualified verifies the job.

The Plumbing Codes Clark County Follows

Clark County and the surrounding cities adopt the Uniform Plumbing Code, often shortened to UPC. This is a widely used rulebook that spells out how plumbing must be installed for safety and function. You can read more about the code development process through the International Association of Plumbing and Mechanical Officials, which publishes the UPC.

On top of the base code, local jurisdictions add their own amendments. These tweaks account for desert conditions, local water quality, and regional building practices. So a rule that applies elsewhere might read a little differently here in the valley.

Older neighborhoods are where code gaps show up most. Homes near Huntridge and other central Las Vegas areas were built decades ago, sometimes with materials or layouts that no longer meet current standards. When those homes get remodeled, the new work has to match today's code even if the old plumbing was legal at the time.

This is why an old bathroom update can turn into a bigger job than expected. Once a wall opens up, an inspector may require you to correct outdated venting or piping. Knowing this ahead of time helps homeowners budget realistically.

Plumbing Repairs Homeowners Can Do Without a Permit

Here is the good news. Plenty of everyday plumbing tasks need no permit at all. These are the small repairs and simple swaps that keep a home running, and homeowners handle them all the time without any paperwork.

The general rule is that no permit plumbing repairs involve fixing or replacing something in the same spot without changing the pipes behind it. If you are not rerouting water, moving a drain, or touching a gas line, you are usually clear. Homeowner plumbing at this level is legal and often straightforward.

Still, even simple jobs have limits. A repair can quietly cross into permit territory the moment you start moving lines. Let's walk through the common ones and where the boundaries sit.

Faucet, Fixture, and Toilet Swaps

Swapping out a kitchen faucet is one of the most common weekend jobs, and it almost never needs a permit. As long as you connect the new faucet to the existing supply lines and drain, you are doing a simple replacement. The same goes for showerheads, which usually thread right onto the existing arm.

Toilet replacement follows the same logic. If you pull the old toilet and set a new one on the same flange with the same water connection, no permit is required. You are not changing where the drain or supply sits, just updating the fixture on top of it.

The exception is when you decide to move things. If a faucet replacement means relocating the supply lines inside the wall, or a new toilet requires moving the drain flange, the job changes. At that point you are altering the plumbing system, and a permit enters the picture.

For basic fixture upgrades, most homeowners do fine on their own. If you run into corroded connections or a flange that has seen better days, our pipe and fixture services team can step in and finish the job cleanly.

Clearing Clogs and Minor Leaks

Clearing a drain clog is fully within homeowner territory. Running a hand snake down a slow bathroom sink or plunging a stubborn toilet needs no permit and no inspector. These are maintenance tasks, not alterations to the system.

Small leaks fall into the same category. Tightening a loose compression nut under a sink or replacing a worn washer is basic upkeep. You are restoring the fixture to working order, not changing the plumbing layout.

Hard water is a big factor around the Las Vegas Valley. Our water carries heavy mineral content, and that buildup clogs aerators, coats fixtures, and narrows pipes over time. Many of the slow drains and dripping faucets we see trace straight back to scale from hard water.

If a clog keeps coming back or a leak returns after you fix it, something bigger may be going on. A recurring blockage can signal a deeper drain problem, and our drain and sewer team can run a camera to see what is happening below the surface.

Replacing Garbage Disposals and Supply Valves

A garbage disposal swap is usually a like-for-like job. If your old unit fails and you install a new one of similar size in the same spot, no permit is needed. You disconnect the old one, mount the new one, and reconnect the drain.

Replacing a shutoff valve under a sink or behind a toilet is also fine for most homeowners. These small valves control water to a single fixture, and swapping a bad one for a new one is standard maintenance. Just shut off the main water first and be ready for a little drip.

Disposals come with one extra warning. They tie into your electrical system, and that crossover trips people up. Wiring a disposal wrong can create a shock hazard, so if you are not comfortable with the electrical side, bring in a pro.

These jobs are simple until they are not. A frozen shutoff valve or a disposal that keeps tripping the breaker can turn a quick fix into a headache. When that happens, a quick service call usually costs less than repeated attempts and store trips.

When a Simple Job Turns Into a Permit Job

The gray area is where homeowners get surprised. A repair stays permit-free until you start altering the system, and that line can be closer than it looks. Moving even one pipe can change the whole picture.

We worked on a Spring Valley remodel where the owner planned a simple vanity swap. Once the old cabinet came out, they decided to shift the sink two feet to open up the room. That single choice turned a no-permit job into a plumbing alteration that needed drain and vent changes.

The moment new pipe gets added or a fixture moves to a new location, you are altering the plumbing. That requires a permit and an inspection, no matter how small the move feels. Inspectors look for exactly these hidden changes.

If you live near Spring Valley and your project is drifting from repair to remodel, it is worth a quick call before you cut into a wall. We can tell you fast whether your plan crosses into permit territory.

Plumbing Work That Always Requires a Permit

Some projects need a permit every single time, with no exceptions. These are the jobs that change how water, waste, or gas moves through your home. When a plumbing permit is required, an inspection comes with it.

The reason is consistency. New lines, relocations, and system changes carry real risk if done wrong, and a Las Vegas permit puts a trained set of eyes on the work. It protects you, future owners, and the neighborhood water system.

Trying to skip these permits is where homeowners get into serious trouble. The work hides behind walls and under floors, and it surfaces at the worst possible times. Here are the projects that always need paperwork.

Moving or Adding Water and Drain Lines

Any time you relocate a fixture or add a new one, you need a permit. Moving a sink, shifting a shower, or adding a laundry hookup all involve changing the water and drain layout. That is a system alteration by definition.

Extending a drain line is a common trigger. If you add a wet bar or a second sink, new drain piping has to tie into the existing system with proper slope and venting. An inspector checks that the connection will drain correctly and not trap sewer gas.

A bathroom addition is the biggest example. Building a new bathroom means running fresh supply lines, drain lines, and vents, plus tying into the main. This always requires a permit and multiple inspection stages as the work progresses.

These jobs reward planning. Getting the drain line slope and vent placement right the first time saves you from tearing open finished walls later. Our team maps the layout before we cut anything so the inspection goes smoothly.

Water Heater Installation and Replacement

A lot of homeowners assume a water heater swap is a simple appliance change. It is not. A water heater permit is required for replacement because the job involves gas, venting, and safety hardware.

Gas water heaters need a proper gas connection and correct venting to carry exhaust safely out of the home. A bad vent can send carbon monoxide inside, which is why inspectors take these seriously. There are also strapping requirements to hold the tank in place during ground movement.

Tankless water heater conversions are popular, especially in newer Henderson builds where owners want endless hot water and space savings. But a tankless conversion changes the gas load and venting needs, so it always needs a permit. Our tankless water heater installation team handles the permit and sizing so the unit performs correctly.

Even a standard tank replacement should go through the process. If you ever need to file an insurance claim after a leak or want our water heater services down the road, a permitted install protects you. Cutting corners here risks both safety and money.

Sewer Line and Main Water Line Repairs

Sewer line repair almost always requires a permit. This work involves the pipe that carries all waste away from your home, and mistakes here are messy and expensive. Digging, replacing, or relining a sewer line is major work.

Central Las Vegas neighborhoods deal with this more than newer areas. Homes near Huntridge and other older parts of town often have original cast iron or clay pipes. Those materials crack, corrode, and get invaded by tree roots after decades in the ground.

Main water line work is the same story. The line bringing fresh water from the meter to your house is under pressure, and a bad repair can flood a yard or worse. A permit puts an inspector on the job to confirm the connection and backfill are done right.

Before any digging, a camera inspection often makes sense to pinpoint the problem. Our sewer line repair and replacement crew locates the break first, then handles the permit and the fix so you are not paying to dig blind.

Repiping and Whole-Home Plumbing Changes

Repiping a home is a large project that always needs permits and inspections. Whether you are replacing failing pipes throughout the house or upgrading old materials, this is system-wide work. Inspectors check it in stages as the new pipe goes in.

Older properties often force the issue. Homes built with polybutylene pipe are a well-known problem, since that material can fail and leak without warning. Many valley homes from certain eras still have it hiding in the walls.

Galvanized steel is another repipe trigger. It corrodes from the inside, restricting flow and rusting your water over time. When we see brown water or weak pressure across a whole house, aging galvanized pipe is often the cause.

A repipe is disruptive but worth doing correctly. With permits and inspections in place, you get documented, code-compliant plumbing that adds real value. It also gives future buyers confidence that the work was done to standard.

HOA and Neighborhood Rules That Add Extra Steps

County permits are only part of the story in many valley communities. A large share of homes here sit inside a homeowners association, and HOA plumbing rules can add another layer of approval. Skipping the HOA step causes fines and delays even when your county permit is perfect.

The Las Vegas HOA landscape is heavy, especially in master-planned areas. These communities protect property values with rules about what you can change and how. Plumbing work that touches anything visible or shared often needs a sign-off.

The important thing to understand is that HOA approval and county permits are two separate systems. One does not replace the other. Let's look at where HOA rules come into play.

Master-Planned Communities With Strict Guidelines

Summerlin is the best-known example of a master-planned community with detailed rules. If your plumbing project touches anything on the exterior, the HOA likely wants to review it first. That includes hose bibs, backflow devices, or changes tied to landscaping.

Inspirada in Henderson runs on similar principles. Water feature changes, irrigation upgrades, and any visible exterior plumbing modification can require architectural approval. The association wants to keep the neighborhood look consistent.

Interior work is usually less restricted, but it depends on the community. Some associations still want notice if the work is large enough to involve contractors, dumpsters, or street parking. Reading your CC&Rs before starting saves grief.

We serve homeowners across Summerlin and know these communities take their guidelines seriously. When a project touches the exterior, we help homeowners understand what the HOA will likely ask for.

Shared Walls and Multi-Unit Properties

Condos and townhomes add a wrinkle because plumbing is often shared. Units near the Arts District and other higher-density areas may have pipes that run through common walls or serve more than one home. Changing shared plumbing affects your neighbors.

Condo plumbing work usually needs approval from the association or property management first. You may not have the authority to alter a line that belongs to the building rather than your unit. That is a legal and financial line you do not want to cross alone.

Shared plumbing also complicates repairs. A leak in a common line can involve multiple owners and the association's insurance. Getting the right approvals up front avoids disputes about who pays for what.

If you own in a multi-unit building near the Arts District, check with management before any pipe work begins. We can coordinate with property managers to keep everyone informed and the project moving.

How HOA Rules Interact With County Permits

The most common mistake we see is treating HOA approval and a county permit as the same thing. They are not. You can get full HOA approval and still be doing illegal work without a county permit, and the reverse is also true.

Both systems can apply to the same project at the same time. A backflow device upgrade might need architectural approval from the HOA and a plumbing permit from the county. You have to satisfy both before the work is truly clear.

The order usually goes HOA first, then county permit. Getting the association sign-off early prevents you from pulling a permit and starting work only to have the HOA object. Sequencing it right keeps the permit process smooth.

Our team is used to running both tracks at once. We handle the county permit while helping homeowners prepare what the HOA needs, so the two approvals line up instead of fighting each other.

How to Pull a Plumbing Permit in Clark County

If your project needs a permit, the process is more approachable than most homeowners expect. Learning how to pull a plumbing permit mostly comes down to knowing where to apply and what to bring. The permit application itself is not complicated for standard jobs.

The steps generally run the same way across jurisdictions. You submit an application, pay a fee, do the work, and pass an inspection. Larger projects add a plan review step before work can begin.

Below we cover the application, who is allowed to pull the permit, and what to expect at inspection. Knowing this ahead of time keeps your project on schedule.

Applying Online or In Person

Most jurisdictions now offer an online permit portal. Clark County and the cities let you apply, pay, and schedule inspections through a web account. For simple permits, you can often complete the whole thing from home in one sitting.

You can find the county's permitting resources through the official Clark County government site. The portal walks you through the type of work and generates the fee based on your project scope. Have your parcel number and project details ready.

Some homeowners prefer face-to-face help, and the county building office still takes walk-ins. Staff can answer questions about which permit you need and what documents apply. For a first-time applicant, that in-person guidance can be worth the trip.

When we handle a job, we take this step off the homeowner's plate entirely. We know the portal, the fee structure, and how to describe the work so the application clears without back-and-forth.

Homeowner Permits vs Contractor Permits

Clark County does allow a homeowner permit in certain cases. If you own and live in the home, you can often pull your own permit for work on that property. This is meant for owner-occupied houses, not rentals or flips.

There are real limits, though. When you pull a homeowner permit, you take on responsibility for the work meeting code. If it fails inspection or causes damage later, that falls on you rather than a licensed professional.

Some work simply requires a licensed plumber to pull the permit. Gas line work and larger system changes often fall into this category because of the risk involved. A licensed contractor carries insurance and stands behind the job.

For many homeowners, the smart move is letting a pro handle both the permit and the work. It removes the liability and usually results in a faster, cleaner inspection. We pull the permit under our license so you are covered.

Scheduling and Passing Inspections

Once the work is done, or at set stages during it, you schedule a plumbing inspection. The inspector visits to confirm the job meets code before anything gets covered up. Timing matters, since you cannot close a wall until the rough-in passes.

Inspectors check connections, venting, pipe support, slope, and pressure depending on the job. For gas work, they verify fittings and test for leaks. Everything they look at ties back to code compliance and safety.

First-time fails are common when homeowners do the work themselves. The usual culprits are improper venting, missing pipe support, wrong pipe materials, or connections that do not meet current code. Each fail means a re-inspection and lost time.

Because we work with local inspectors constantly, we know what they look for before they arrive. That familiarity is why our permitted jobs tend to pass on the first visit instead of dragging through rounds of corrections.

The Risks of Skipping a Permit

It is tempting to skip a permit to save time and money. We understand the impulse. But unpermitted plumbing work creates problems that almost always cost more than the permit would have, and they surface at the worst moments.

Permit fines are just the start. The bigger costs come when hidden work has to be torn out, when a home sale falls apart, or when an insurance claim gets denied. These are not rare outcomes.

Here is a clear look at what can go wrong. None of it is worth the small savings on the front end.

Fines, Stop-Work Orders, and Tear-Outs

If an inspector or building official spots unpermitted work in progress, they can issue a stop-work order. That halts your project on the spot until you sort out the permit. Everything stops, including any contractors you have scheduled.

A code violation can also bring fines. The amount varies by jurisdiction and the scope of the work, but penalties stack up fast. Some areas charge extra fees for permits pulled after the fact, on top of the fine.

The most painful part is the tear-out. If work is already sealed behind walls or under floors, the county can require you to open it back up for inspection. You end up paying to demolish finished work, get it inspected, then rebuild it all over again.

That sequence can easily triple the cost of a job. What looked like savings turns into a much larger bill and weeks of extra delay. Doing it right the first time is nearly always cheaper.

Problems When Selling or Insuring Your Home

Unpermitted work has a way of showing up when you sell. During a home sale, buyers order inspections, and inspectors flag plumbing that does not match permit records. That can kill a deal or force a price cut.

We see this often in areas like Green Valley, where buyers are thorough and appraisers check permit history. If your added bathroom or moved kitchen sink has no permit on record, the sale gets complicated. Some buyers walk away entirely.

Insurance is the other trap. If unpermitted plumbing causes a leak or flood, your insurer may deny the claim. They can argue the damage came from work that was never approved or inspected, leaving you to pay for the repairs yourself.

Fixing the paperwork after the fact is possible but painful. Retroactive permits, inspections, and any required corrections cost far more than handling it at the start. It is a headache that follows the home for years.

Safety Hazards From DIY Gone Wrong

Beyond money, bad plumbing creates real danger. A hidden leak can rot framing and grow mold before you ever notice it. In the dry desert climate here, a slow leak inside a wall can go undetected for a long time.

Slab leaks are a particular concern in the valley. Many homes are built on concrete slabs, and a leak under the slab can undermine the foundation and cause serious water damage. These are hard to spot without the right equipment.

Gas work carries the highest stakes. A poorly made gas connection can leak, and gas leaks risk fire and health problems. This is exactly the kind of work that should never be a DIY gamble.

If you suspect a hidden leak, fast detection matters. Our electronic leak detection service finds problems inside walls and under slabs without tearing the house apart, so small issues get caught before they become disasters.

When to Call Active Plumbing Instead of DIY

Knowing your limits is a skill. Small repairs are fair game for most homeowners, but permit-heavy and high-risk jobs are where a professional pays off. As a local Las Vegas plumber team, we help homeowners draw that line every day.

Active Plumbing has worked on hundreds of homes across the valley, from central Las Vegas to the newest Henderson subdivisions. We know the codes, the inspectors, and the neighborhood quirks. That experience turns a stressful permit job into a routine one.

Here is how to decide when to hand a project over to us.

Jobs That Need a Licensed Plumber

Some work should always go to a licensed plumber. These are the jobs where mistakes are expensive, dangerous, or both:

• Gas line work, including new lines, reroutes, and connections for appliances
• Whole-home repipes on older properties with polybutylene or galvanized pipe
• Sewer line replacement and main water line repairs that require digging
• Water heater and tankless conversions involving gas and venting
• Any bathroom addition or fixture relocation that changes the drain layout

For gas line projects especially, a licensed plumber is worth every dollar. Our gas line services cover installation, rerouting, and leak repair with the permits and inspections included. A licensed pro passes inspection and keeps your home safe.

These jobs also tend to reveal surprises. Older pipes crack, connections corrode, and layouts do not match the original plans. We plan for that and handle it without the panicked mid-project calls that DIY jobs often produce.

How Our Team Handles Permits for You

One of the biggest values we offer is permit handling from start to finish. We pull the permit under our license, so you skip the portal, the paperwork, and the liability. That alone removes a major source of stress.

We also handle inspection coordination. We schedule the inspections, meet the inspector on site, and make sure the work is ready when they arrive. If the job needs multiple inspection stages, we sequence it so nothing stalls.

Because we know local building department expectations, our jobs are built to pass. We use the right materials, follow the local amendments, and set up the work the way inspectors want to see it. That is how first-pass approvals happen.

The result is a project you do not have to babysit. You get code-compliant plumbing, proper documentation, and no surprise stop-work orders. When you eventually sell or file an insurance claim, the records are all in order.

Serving Homes Across the Las Vegas Valley

We serve the whole Las Vegas Valley, not just one corner of it. Our trucks run through Summerlin, Henderson, Spring Valley, Enterprise, Paradise, and the central Las Vegas neighborhoods every week. Local familiarity is built into how we work.

In North Las Vegas, we cover communities like Aliante and Elkhorn and know that city's building department. We understand the difference between the county and city offices because we deal with all of them constantly.

Older neighborhoods get special attention. Homes near Huntridge and other central areas have aging pipes and outdated layouts, so we go in expecting those conditions. Newer builds in Lake Las Vegas or Mountains Edge bring different needs, and we adjust accordingly.

Whatever your address, we know the local codes and the common problems in your area. That neighborhood-level knowledge is what separates a smooth permitted project from a frustrating one.

Final Thoughts

The line between DIY and a permit job comes down to one question. Are you fixing something in place, or are you changing how water, waste, and gas move through your home? Simple repairs are yours to handle, while relocations, new lines, water heaters, and repipes need a permit and an inspection.

Getting it right protects your safety, your home value, and your wallet. Unpermitted work has a way of surfacing at the worst time, whether during a sale, an insurance claim, or a hidden leak. A permit is cheap insurance against all of that.

When your project crosses into permit territory, our team is ready to help. Contact Active Plumbing for a consultation, and we will handle the permit, the work, and the inspections so your project passes the first time.

Frequently Asked Questions

Do I need a permit to replace a toilet in Clark County?

For a like-for-like toilet replacement, you usually do not need a permit. If you pull the old toilet and set a new one on the same flange with the same water connection, it counts as a simple fixture swap. The permit requirement kicks in only if you move the drain flange or reroute the supply line, since that alters the plumbing system.

Can a homeowner pull their own plumbing permit?

Yes, Clark County allows a homeowner permit for owner-occupied homes in many cases. If you live in the house, you can often pull your own permit for work on that property. The limits are real, though. You take on responsibility for the work meeting code, and some jobs like gas lines require a licensed plumber to pull the permit instead.

How much does a plumbing permit cost in Las Vegas?

Costs vary by project scope and jurisdiction, so there is no single price. Small permits for a water heater or minor work often run in the range of a few dozen to around a hundred dollars. Larger projects that need plan review cost more because fees scale with the work involved. Check your specific building department for exact figures.

Do I need a permit to install a new water heater?

Yes, water heater replacements require a permit. The job involves gas connections, venting, and seismic strapping, all of which affect safety. Improper venting can allow carbon monoxide into the home, which is why inspectors review the work. This applies to standard tank units and tankless conversions alike, so plan for the permit as part of the job.

How long does a plumbing permit take to get approved?

Simple permits through the online portal are often approved the same day or within a day or two. Water heater swaps and small jobs move quickly. Larger projects that require plan review, like a bathroom addition or repipe, take longer because officials examine the plans first. Those can run one to several weeks depending on the workload at the building office.

What happens if I get caught doing unpermitted plumbing work?

You can face a stop-work order, fines, and a requirement to tear out finished work for inspection. That means paying to demolish, inspect, and rebuild, which can triple the cost. Unpermitted work also shows up when you sell your home or file an insurance claim, where it can kill a deal or lead to a denied claim.

Do I need a permit to move a sink or add a bathroom?

Yes, both always require a permit. Moving a sink changes the drain and supply layout, which counts as a plumbing alteration. Adding a bathroom means running new supply, drain, and vent lines and tying into the main system. These jobs involve inspections at multiple stages, so a permit is required no matter how small the change feels.

Does my HOA need to approve plumbing work too?

In master-planned communities like Summerlin and Inspirada, HOA approval is often required and is separate from your county permit. The HOA cares about exterior work, water features, and anything visible from outside. You may need architectural approval from the association and a plumbing permit from the county for the same project, so check both before you start.

Can I do my own repiping if I own the home?

Even for owner-occupied homes, repiping requires permits and inspections. It is a system-wide change that inspectors review in stages as the new pipe goes in. Because the work is large and hides behind walls, doing it without permits creates serious resale and insurance problems. Most homeowners find a licensed plumber saves money and passes inspection on repipe jobs.

Should I hire a plumber or handle small repairs myself?

Handle the small stuff yourself when you are comfortable. Swapping a faucet, clearing a clog, or replacing a shutoff valve is fair game and needs no permit. For anything that moves pipes, touches gas, or requires a permit, call a licensed plumber. The cost of a pro is almost always less than fixing a failed DIY job or a denied inspection.