Sewer Line Replacement in Dallas, TX
Licensed Master Plumber M-43562 · $29 service fee · $3,375 tunneling minimum (first 5 ft) · $180/ft trenching · financing available · 15% off same-day approval
In Dallas, the City's job on your sewer stops at the property line. From there to the house, including the pipe under your slab, the line is yours, and in a city where nearly half the homes were built before 1980, a lot of those lines are original. We replace them with new PVC at published prices, tunneling under the foundation so your floors stay put.
- Licensed & Insured (TSBPE M-43562)
- $29 service fee
- Upfront Pricing
- Certified Price Review
Where Dallas Water Utilities stops and your line starts
Dallas City Code Section 49-24 makes the City responsible for maintaining the wastewater service connection from the main to the property line. The building lateral, the pipe from the property line to your house, is private plumbing, and the code requires it to be built in strict accordance with the City's plumbing and building codes. For a residential hookup, the City completes the connection between its service line and your building lateral at the property line.
That split decides who pays when the line fails:
- From the main to the property line: the City's wastewater service connection, maintained by Dallas Water Utilities.
- From the property line to your foundation: your building lateral. This is the section we're usually hired to replace.
- Under the slab: also yours. It's where most of the cost sits, and where tunneling saves your floors.
Under Section 49-30(c), the City can also require an owner to repair or replace substandard private plumbing as a condition of continued service, including a line that lets extraneous water into the wastewater system. A cracked lateral that takes in groundwater fits that description.
Dallas homes and the age of their sewer pipe
The Census Bureau's American Community Survey (2020–2024 5-year estimates) counts about 590,000 housing units in Dallas, with a median year built of 1981. About 48% of those units went up before 1980, about one in three before 1970, and about one in five before 1960.
- Pre-1960 houses were built in the cast iron era. The American Society of Home Inspectors calls cast iron the go-to drain, waste and vent pipe from the 1850s to the 1950s. It rusts from the inside, so the damage usually isn't visible until the line backs up.
- The clock on cast iron is long, but it runs out. InterNACHI's life-expectancy chart puts below-ground cast iron waste pipe at 50 to 60 years. A Dallas house from 1970 or earlier that still has its original drain is at or past that range.
When a Dallas sewer line needs replacing, not another cleaning
- A drain company has cleared your main line two or more times in 12 months.
- The toilet bubbles or the tub gurgles when the washing machine empties.
- Water comes up first at the lowest drain in the house, often a shower or floor drain.
- A camera shows offset joints, a sag that holds water, roots inside the pipe, or cast iron with the bottom worn through.
- A wet, sunken or unusually green strip shows up over the line's path in the yard.
If the whole street is backing up, call the City first. Dallas Water Utilities lists a clogged or overflowing wastewater main among the problems residents should report through Dallas 311. If your neighbors are fine and only your house is backing up, the blockage is more likely in your building lateral.
Dallas permits and code
Sewer replacement is permitted and inspected work where the city requires it. Dallas has adopted the International Plumbing Code and the International Residential Code with Dallas amendments, and the Dallas Plumbing Code covers the repair, replacement and maintenance of plumbing systems in the city. We plan the job so the new line is ready for the City's inspection, and the schedule goes in writing with your quote.
How we replace a Dallas sewer line
- Run a camera from a cleanout and locate the line on the surface. You keep the video. See sewer camera inspection.
- Write an itemized quote: feet of tunnel, feet of trench and number of access holes, each at our published price. We don't bill by the hour.
- Have utilities marked, and handle the job as permitted and inspected work where the city requires it.
- Tunnel under the foundation from outside, so floors, cabinets and tile stay where they are. Trench the yard section out to the property line.
- Lay new PVC, add a two-way cleanout near the house, test the line for inspection, then backfill the tunnel in compacted layers so the slab stays supported.
Where the old yard pipe still holds its shape and the route is open, trenchless pipe bursting can replace that section without a full-length trench.
Dallas clay and why sewer joints pull apart
A U.S. Department of Agriculture soil survey of Dallas County places the county in the Black Prairie region and names Houston black clay as its most extensive soil type. The Texas Water Development Board says Houston Black soils are recognized worldwide as classic clays that shrink and swell markedly with changes in moisture, and the USDA's official soil description notes cracks 1/2 to 4 inches wide in dry periods. When the soil moves, the pipe in it moves too, which is how old sewer lines develop sags and separated joints. If your foundation has been lifted or leveled, tell us; that work can break a drain line under the slab.
What sewer line replacement costs in Dallas
Our sewer prices are published. Every quote is built from these line items:
The mix depends on where the line leaves the house, how far it runs under the slab and how deep it sits. We confirm the footage on site before we put a number in writing. For what drives the total, read our sewer line replacement cost guide.
Start with a $29 service fee
Every job starts with a $29 service fee, a camera inspection or walk-through as needed, and a written quote before work begins. We're open Monday through Saturday, 7 AM to 7 PM, and closed Sunday.
Already have another quote? Send it to us.
Certified Price Review: We'll match or beat apples-to-apples plumbing scopes. Send us a written, itemized sewer line estimate from another licensed plumber. We compare scope, installation method, materials, access/excavation, warranty and diagnostics. If the work is directly comparable, we may adjust our price. Verbal or incomplete estimates may not qualify, and a review doesn't obligate us to match. See program terms →
Financing: A sewer replacement can be split into monthly payments. Financing is available, subject to credit approval. See financing options →
Save 15% when you approve the same day. Approve your written quote the day we give it to you and we take 15% off.
Dallas sewer line replacement FAQs
Who pays to fix the sewer line between my house and the street in Dallas?
Under Dallas City Code Section 49-24, the City maintains the wastewater service connection from the main to the property line. The building lateral from the property line to your house, including any pipe under the slab, is private plumbing and the owner's responsibility.
How much does sewer line replacement cost in Dallas?
Tunneling under the slab is $3,375 minimum for the first 5 ft, then $425 per foot. Open trenching in the yard is $180 per foot, and each access hole is $1,150. Your total is set in a written quote after a camera inspection, and every job starts with a $29 service fee.
My neighbors are backing up too. Who do I call?
Report it to Dallas Water Utilities through Dallas 311 first. The City lists a clogged or overflowing wastewater main as a 311 problem. If only your house is affected, the stoppage is more likely in your building lateral, and we can camera it.
Can the City make me replace a bad sewer lateral?
It can require it in some cases. Dallas City Code Section 49-30(c) lets the director require a customer to repair or replace substandard private plumbing as a condition of continued service if it could cause a public health hazard, damage or contaminate the system, waste a substantial amount of water, or let extraneous water into the wastewater system.
Will you tear up my floors?
Usually not. We tunnel under the foundation from outside, so floors, cabinets and tile stay in place. Now and then a small indoor access hole costs less, and we'll show you both prices.
Do I need a permit to replace a sewer line in Dallas?
Sewer replacement is permitted and inspected work where the city requires it. Dallas regulates plumbing repair and replacement under the Dallas Plumbing Code, the City's amended version of the International Plumbing Code.
More for Dallas homeowners: Plumber in Dallas · Slab leak repair in Dallas · Cast iron sewer pipes in pre-1980 homes · Cast iron pipe replacement cost