A Houston sewer guide: how it works and what to ask a contractor

What this site is

The guides here explain Houston sewer problems in plain language: why gumbo clay breaks cast iron under slabs, when a spot repair is enough and when the whole line should go, what trenchless can and cannot do, and what each job typically costs in the Houston market. The prices are typical ranges gathered for homeowners, not quotes, and nothing on this site is an offer of plumbing work by the site itself.

We write it because sewer repair is a job most people buy once or twice in their lives, under pressure, with sewage on the bathroom floor and two quotes that differ by $15,000. A homeowner who knows what a camera report should show and what a quote should list is much harder to oversell.

How estimate requests work

When you call, text or request an estimate, your request goes to an independent local plumbing contractor partner. That contractor — not this site — inspects the line, writes the quote, pulls the permit and performs the work, and any warranty or guarantee is between you and them. There is no obligation to hire. You should check that contractor's license exactly the way this guide tells you to check anyone else's, and you are always free to get other quotes.

Licensing in Texas, and what to ask for

Texas treats the sewer line from your fixtures out to the property line as plumbing, and the state requires plumbing to be done by plumbers licensed by the Texas State Board of Plumbing Examiners (TSBPE). A plumbing company works under a Responsible Master Plumber, whose license number has to appear on the company's vehicles, advertising and paperwork, and the City of Houston issues the permit for a replacement or under-slab job only to a licensed plumber. Ask any company you are considering for that number and check it on the TSBPE website before signing: the name should match, the license should be current, and the license type should cover the work. A company that says it does not need a permit for sewer work is telling you it cannot get one.

How to choose among plumbers in Houston for sewer work

Beyond the license, the checks that matter most:

• Camera before price. A sound quote starts with a camera down the line and, on slab homes, a hydrostatic test where it is warranted. Ask to watch the screen and keep the recording.
• Fix what failed. A separated joint 22 feet out is usually a one-day spot repair, not a replacement. A leaking hub under the hall bath is often a short tunnel, not a whole-house re-plumb. If a contractor proposes the whole line, ask them to show you why on the footage.
• Price in writing, line by line. Method, footage, depth, material, cleanout, permit, restoration and warranty terms, with how long the price holds.
• Proof of insurance. Ask for certificates of general liability and workers' compensation before a crew arrives, and confirm a Texas811 locate ticket before any digging.
• Proof of the work. A second camera pass on new pipe and a second hydrostatic test on under-slab work, with the recordings given to you.
• No pressure. Be wary of "today only" prices and large deposits before the permit is pulled.

The pricing page has typical 2026 ranges to compare quotes against.

The utility-line protection plans

Houston homeowners get mailings offering sewer line coverage for $6–$12 a month, often with a logo that looks like the water utility's. They are private warranty products, not city programs. Read the cap (often $4,000–$8,000, which does not cover an under-slab tunnel), the exclusions (pre-existing conditions, meaning anything a camera would already show), and the contractor clause (their contractor, their schedule). For a 1990s PVC lateral in Katy the math can work. For a 1960s cast iron slab home in Meyerland it rarely does, and the money is often better spent on a camera inspection and a savings account.

What this guide covers

Sewer lines across Harris and Fort Bend counties — Bellaire, West University, Meyerland, Braeswood, Oak Forest, Garden Oaks, Spring Branch and Memorial, out to Katy and Cypress, north to Spring, Humble and The Woodlands, south through Pasadena, Pearland and Friendswood, and Sugar Land and Missouri City. The Bellaire and Sugar Land pages describe what is typical in those areas. It does not cover faucets, water heaters, foundations or landscaping, though sewer problems often involve all three, and the guides say when a problem belongs to someone else.

How the guides are written

Each page starts from a question a homeowner actually has — why does the tub fill when the washer runs, is a tunnel safe, why are two quotes $10,000 apart — and tries to answer it in plain words. The pages explain how the work is usually done, what the common failure is for that age of house, and what to ask before signing anything. When something depends on your address, your utility or your policy, the page says so and names the office to call, rather than guessing.

The guides avoid brand names, product endorsements and promises. They do not rank companies, and they do not claim any contractor is better than another. The point is to help you ask good questions of whoever you talk to.

Where the price ranges come from

The prices on this site are typical market ranges for the Houston area, gathered to help you tell a normal quote from an unusual one. They are not bids, and nobody is bound by them. Your number depends on the depth of your line, its length, what sits on top of it, the pipe material, and whether the slab is involved. A camera visit is what turns a range into a price for your house. If a quote you receive is well outside the range for the same job, that is a reason to ask questions, not proof that anything is wrong.

Who to call when it is not a plumbing job

Some sewer trouble belongs to someone other than a private plumber:

• The city main. If the camera shows the problem past your property line, or the whole street backs up in a storm, call 311 in Houston, Bellaire Public Works in Bellaire, or the utility named on your water bill.
• A MUD district. Many suburbs are served by a municipal utility district. Its operator is on your bill, and it maintains the mains in that district.
• The foundation company. If the slab has moved, they may want a drain test before or after their work. Ask them to share the result with you.
• Your insurance carrier. If a backup has damaged the house, photograph everything before cleanup and call the carrier. They decide what the policy covers. Only a licensed public adjuster can negotiate a claim on your behalf.

A short checklist for your first call

Before you talk to anyone about a sewer problem, it helps to have a few facts ready:

1. The year the house was built, and whether it is on a slab.
2. Which drains back up or run slow, and what makes it happen — a flush, the washer, a storm.
3. How many times the line has been cleared, and when.
4. Where the cleanout is, if you know.
5. Any big trees between the house and the street.
6. Any recent foundation work, remodel or inspection report.

With those, the person on the phone can tell you whether you need a cleaning, a camera visit or a test, and roughly what each will cost.

How estimate requests are handled

Calls and requests through this site are handled by an independent local sewer line contractor we work with in Houston, who provides the written quote and performs the work. We only work with sewer contractors licensed by the Texas State Board of Plumbing Examiners — ask for their license number. Prices on the site are typical Houston ranges, not a quote.