Polly Plumbing | 1762 Keller Pkwy, Keller, TX | (817) 286-3446. Written by Haven Brady, Co-Founder. Locally owned, not a franchise. Every diagnosis on our trucks gets reviewed by a licensed master plumber. Texas License RMP-42199. Serving Keller, Southlake, North Richland Hills, Grapevine, Flower Mound, Fort Worth, Arlington, Trophy Club, Roanoke, and all of Tarrant County.
There is a short window, usually about a week, when a five figure plumbing problem is still somebody else’s. After it closes, it is yours.
That is the option period, and it is the only moment in the entire transaction when finding a problem is cheap. Find a failing sewer line during it and you can negotiate, ask for a credit, or walk away with your earnest money. Find the same line in March, four months after closing, and you own a repair that can run well into five figures with nobody left to split it with.
Most buyers spend that week focused on the roof, the foundation, and the air conditioner. Fair enough, those are expensive too. But the plumbing risk in this area is concentrated underground, in exactly the places a standard inspection is not designed to look. In older Keller and North Richland Hills housing, it is the single most expensive thing nobody checks.
This article covers what a general home inspection actually includes and where its limits genuinely are. Then the specific checks worth adding here, how to read the year the house was built as a risk profile, and how to sort findings into dealbreakers, negotiating chips, and things not worth mentioning. There is also a section for the majority of you reading this who already bought the house.
What a Home Inspection Really Covers
Start by being fair to home inspectors, because most of them are good at a difficult job and the misunderstanding here is not their fault.
In Texas, a home inspection follows a defined set of standards. Under those standards an inspector performs a visual check of the plumbing and reports deficiencies in the accessible and visible parts. That means fixtures, supply and waste piping they can see, vents, water heater condition and installation, and drainage performance at the fixtures. That is real, useful work, and a good inspector catches plenty.
The word doing the heavy lifting is visual. The standards describe a non-invasive inspection of what can be seen and reached. Inspectors do not dismantle systems, do not dig, and do not put water pressure on lines to test them.
And one exclusion matters more than all the others here. Cameras and similar tools used to inspect the inside of a drain or sewer line are specifically excluded from those standards. Some inspectors do offer sewer scoping as an add-on service, which is allowed, though it sits outside the standard inspection. Even then there is a meaningful difference in what you get. An inspector can report what the camera shows and recommend further evaluation. A licensed plumber can tell you what the repair actually is, what it costs, and then perform it.
So when a buyer says the inspection covered the plumbing, that is true, and it is also true that the most expensive risk on the property was never looked at. Both things at once. That is the gap worth closing during your option period.
The Checks Worth Adding Here
Not every house needs all of these. The house’s age decides most of it, which the next section covers. Here is what a plumber can determine that a visual walk-through cannot.
A sewer camera down the main line. The big one. A camera run from the cleanout out toward the city connection shows the actual condition of the pipe. Root intrusion at the joints, cracks, bellies where the line has sagged and holds water, offsets where clay soil has pulled sections apart, and the pipe material and its remaining life. This is the check that most often changes a negotiation, and our sewer camera inspection guide for Keller TX walks through what the footage shows and how to read it.
A hydrostatic test. Different tool, different question. A camera shows you the condition of the line you can see. A hydrostatic test isolates the drain system and holds it full of water to see whether it loses any, which tells you whether the system leaks, including under the slab where no camera goes. Cameras and pressure tests answer different questions, and on an older home the answers can disagree in useful ways.
Water pressure at the hose bib. Two minutes with a gauge tells you whether the incoming pressure is above code and quietly destroying the fixtures, and whether a pressure reducing valve exists and still works. This is cheap information that predicts future repair bills, and our high water pressure guide explains what the number means.
The water heater’s real age and install quality. The serial number on the rating plate dates the tank, and that number frames a purchase decision the seller may not have mentioned. A twelve year old tank in our hard water is a replacement waiting on a calendar. Our guide to replacing a water heater before it fails covers decoding the sticker. While up there, the code items matter too: expansion tank, drain pan and line, proper venting on a gas unit.
Supply pipe material. What the house is plumbed with sets its future. Galvanized steel supply lines corrode closed from the inside over decades, and finding them changes the math on the whole property, which our main water line repair vs replacement guide covers.
Evidence of slab leak history. Patched flooring in odd places. A section of newer concrete, fresh drywall low on one wall, or a suspiciously new water line running through the attic. Any of those can indicate a previous slab leak and a reroute. That is not automatically bad news, a completed reroute is a solved problem, but you want to know, and you want to ask what else was found at the time.
Read the Year Built First
This is the part a national article cannot give you, because the risk here tracks specific local construction eras. Before anything else, find out when the house was built.
Before about 1972. Sewer lines from this era can be clay tile or, worse, Orangeburg, a compressed fiber pipe that deforms and collapses with age. In old Keller neighborhoods and along the older stretches near US 377, this is a genuine possibility. A camera is not optional on a house this old, it is the whole ballgame.
Roughly 1972 through the early 1990s. Cast iron drain lines, and this is the largest risk pool in the area right now. Cast iron corrodes from the inside along the bottom of the pipe, a pattern called channel rot, and lines from this era across North Richland Hills and older Keller are reaching the end of their service life at the same time. They frequently look fine at the fixtures and are failing underground.
Before about 1985. Galvanized steel supply piping is possible. It closes up from the inside, which shows as pressure that got worse over the years and never got better.
Before about 1995. Original copper supply lines, now three decades into some of the hardest water in Texas.
Southlake and similar 1990s and 2000s construction. Post-tension slabs, common in Timarron, Carillon, and that generation of neighborhoods. Not a defect at all, but it changes how a future slab leak gets repaired, since cutting the slab requires locating tensioned cable first, and it pushes repairs toward reroute or tunnel. Worth knowing before you own it rather than during an emergency.
Newer construction across north Keller and Flower Mound. Modern materials, much lower risk profile. A camera is still reasonable due diligence on a resale, but the odds are genuinely better.
Underneath all of it sits the same soil. Blackland Prairie clay swells and shrinks with the seasons, which the USGS has documented, and decades of that movement is what pulls sewer joints apart and stresses everything buried. The clay does not care what year the house went up. It just gets more time to work on the older ones.
Polly Plumbing is a locally owned shop on Keller Parkway. We run pre-purchase plumbing inspections across Keller and Tarrant County, and the findings come to you in writing, in time to use them.
The Vacant House Problem Nobody Warns You About
Here is a genuinely obscure one that catches buyers of vacant, foreclosed, and long-empty homes, and it is worth knowing weeks ahead rather than days.
If a house has been sitting empty with the gas shut off, the utility may not simply turn it back on when you ask. Depending on the city and the circumstances, a permit and a gas pressure test performed by a licensed plumber can be required before Atmos will restore service. That is a test, a permit, and scheduling, all stacked in front of a move-in date that somebody has probably already committed to.
The fix is simply knowing early. If the listing says vacant, if the gas is off, or if the house has been empty for months, ask the question during the option period instead of the week you are moving. It turns a crisis into an appointment. And if there is any question about the gas system itself, the utility comes first and the plumber second: Atmos Energy’s emergency line is 1-866-322-8667, and that call happens before ours, always.
Reading the Findings Without Blowing Up the Deal
A plumbing report on a thirty year old house will contain things. That is normal, and panicking at the wrong item is how good deals die.
Sort what you get into three piles.
Deal-affecting. A collapsed or failing sewer line, active slab leak evidence, galvanized supply piping throughout, or a gas system problem. These are four and five figure items, and they belong in the negotiation or the decision. Not necessarily dealbreakers, plenty of these get fixed and the house is fine afterward, but they need a number attached before you sign.
Negotiating chips. A water heater at or past year ten. A missing expansion tank. Pressure running above code with a dead reducing valve. Aging angle stops throughout. Each is modest on its own, and together they make a reasonable ask for a credit.
Live with it. A dripping faucet. A running toilet. A slow bathroom drain. These are the cheapest repairs in plumbing, and spending your negotiating capital on them instead of the sewer line is a bad trade.
The most useful thing about a written report is that it converts vague worry into specific numbers, and specific numbers are what actually move a negotiation. Vague concerns get dismissed. A camera video with a documented offset at a measured distance does not.
If You Already Bought the House
Most people reading this are not in an option period. They are standing in a house they already own, wondering what is under it. This section is for you, and the good news is that nothing here expires.
The same checks are worth running, just with a different purpose. You are no longer deciding whether to buy. You are deciding what to plan for, and that changes the value of the information rather than eliminating it. A sewer camera on a 1970s house tells you whether you are looking at a repair this year or in eight years, which is the difference between a budget and an emergency.
Run the free ones yourself this weekend. Date the water heater from its sticker. Put a gauge on the hose bib and check pressure. Look under the sinks for corroded angle stops. Walk the yard for soggy strips. Find your main shutoff and make sure it turns.
Then decide what deserves professional eyes based on the year built. Nothing about the list changes because you already own the house. Only the deadline does.
What It Costs, the Short Honest Version
A pre-purchase plumbing inspection is a modest, fixed-scope visit, priced at the small end of our board and radically cheaper than the repairs it exists to find. Adding a sewer camera to it is likewise modest. What it protects against is the genuinely expensive end of this trade: sewer replacement, slab repair, and whole-home repiping all land in the mid four figures and up. Set that against a small inspection fee during the one week it can still be somebody else’s problem and the math is not close. The written quote is the invoice, the $89 dispatch fee is waived for PollyCare members, and there is no emergency surcharge. Our plumbing inspection page for Keller TX covers the service itself.
If We Were Buying the House
Here is what we would actually do, in order, on a house in this area.
Look up the year built before anything else, because it sets the whole risk profile. If it predates the mid 1990s, book the sewer camera early in the option period, not on the last day, so there is time to get a repair quote if the footage finds something. Put a pressure gauge on a hose bib during the walkthrough, since it costs nothing and predicts years of fixture bills. Photograph the water heater’s rating plate and date the tank before making an offer. If the house has been vacant with the gas off, ask about the utility’s requirements immediately. And if the camera finds something real, get the repair priced in writing before the option period closes, because a number is negotiable and a worry is not.
Then, once it is yours, keep the report. A documented baseline of what the plumbing looked like on day one is worth more five years later than anyone expects.
We Are Close By
Polly Plumbing runs pre-purchase and homeowner plumbing inspections from our shop on Keller Parkway, serving Keller, Southlake, North Richland Hills, Flower Mound, Fort Worth, Arlington, Trophy Club, Roanoke, and all of Tarrant County.
Under contract with days left on your option period? That is the call to make today. Dial (817) 286-3446. Live agents answer 24/7, findings come in writing you can hand to your agent, and the written quote is the invoice.
Frequently Asked Questions About Pre-Purchase Plumbing Inspections
Does a home inspection include the plumbing?
Partly, and the distinction matters. In Texas a home inspection includes a visual check of accessible and visible plumbing: fixtures, the piping that can be seen, vents, water heater condition, and how fixtures drain. It is non-invasive by design, so inspectors do not dismantle systems, dig, or pressure test lines. Most significantly, cameras used to inspect the inside of a drain or sewer line are specifically excluded from the inspection standards. So the plumbing is covered, and the buried sewer line, often the most expensive risk, is not. Call Polly Plumbing at (817) 286-3446.
Should I get a sewer scope before buying a house in Keller?
On any home built before the mid 1990s, yes, and it is close to mandatory before 1972. Local sewer lines from those eras are clay, Orangeburg, or cast iron, all of which fail with age, and Blackland Prairie clay soil pulls joints apart over decades. A camera shows root intrusion, cracks, bellies, and offsets that no visual inspection can reach. Schedule it early in the option period so there is time to get a repair quote if it finds something. Call Polly Plumbing at (817) 286-3446.
What is the difference between a sewer camera and a hydrostatic test?
They answer different questions and are not interchangeable. A camera travels the line and shows physical condition: roots, cracks, sags, offsets, and pipe material. A hydrostatic test isolates the drain system and fills it with water to see whether it holds, which reveals leaks the camera cannot see, including under the slab. On an older home the two can disagree usefully, with a line that looks acceptable on video still failing to hold water. Call Polly Plumbing at (817) 286-3446 to discuss which your house needs.
What plumbing problems are most common in older Keller homes?
It tracks the build year closely. Before roughly 1972, sewer lines may be clay tile or Orangeburg, which deforms and collapses. From about 1972 into the early 1990s, cast iron drain lines corrode from the inside, and that group across North Richland Hills and older Keller is reaching end of life now. Before about 1985, galvanized supply piping closes up internally and chokes pressure. Southlake’s 1990s and 2000s homes sit on post-tension slabs, which changes how a slab leak gets repaired. Call Polly Plumbing at (817) 286-3446.
Can I still negotiate plumbing repairs after the option period?
Technically yes, but the leverage is dramatically weaker, which is exactly why timing matters. During the option period you can negotiate a repair or credit, or terminate and recover your earnest money. After it closes, you are asking rather than requiring. Book the inspection early in the window rather than on the final day, so there is room to get findings priced in writing and bring an actual number to the conversation. Vague worries get dismissed; documented footage and a written quote do not. Call Polly Plumbing at (817) 286-3446.
The house has been vacant with the gas off. Does that matter?
It can, and it catches people days before move-in. Depending on the city and the circumstances, a permit and a gas pressure test by a licensed plumber may be required before the utility restores service to a home that has sat empty with the gas shut off. That is a test, a permit, and scheduling stacked in front of your move-in date. Ask during the option period rather than the week you move. For any suspected gas issue, call Atmos Energy first at 1-866-322-8667, then a plumber. Call Polly Plumbing at (817) 286-3446.
Is a plumbing inspection worth it if I already own the home?
Yes, though the purpose changes from deciding whether to buy to deciding what to plan for. A camera on a 1970s house tells you whether a repair is this year or in eight years, which is the difference between budgeting and an emergency. Several checks are free to do yourself. Date the water heater from its rating plate, put a gauge on a hose bib to read pressure, inspect angle stops under sinks, walk the yard for soggy strips, and confirm the main shutoff turns. Call Polly Plumbing at (817) 286-3446.