Sewer line replacement installs an entirely new lateral between the house and the city main, usually by open-cut excavation along the existing route. It is the right method when damage runs the length of the pipe, a section has collapsed, or grade has to be corrected. Smith handles permits, locates, installation and restoration.
When replacement beats repair
Replacement earns its place when the problem is the whole pipe rather than one part of it. The camera footage from a sewer camera inspection is what makes that call, and a few findings point at replacement almost every time.
- Damage distributed along the run. Cracks, offsets or root entry at joint after joint rather than in one place.
- A section that has collapsed or deformed enough that the camera cannot pass.
- A belly that needs grade corrected. No lining or cleaning method restores fall to a sagging line — the pipe has to be dug up and re-laid on proper bedding.
- Pipe material at the end of its service life. Fiber conduit losing its shape, or cast iron so scaled and channeled that there is little sound wall left.
- A lateral that has to move because of an addition, a new connection point, or a route that was never right.
If none of those apply, a spot repair or trenchless rehabilitation is usually the cheaper and less disruptive answer, and we will point you there.
How open-cut replacement works
Open-cut means exactly what it says: the crew opens a trench along the path of the existing lateral, removes the old pipe, lays new pipe on compacted bedding at the correct fall, ties into the house stub at one end and the city connection at the other, then backfills in lifts and compacts as they go.
It is the oldest method and still the most capable one. Nothing else lets a crew physically reset grade, change the route, or deal with a line that has already failed structurally. The trade is surface disruption — you see the whole work area, and restoration is part of the job rather than an afterthought.
Permits, locates and the city connection
Sewer replacement is permitted work. The jurisdiction sets inspection requirements, and in most cases an inspector signs off on the new line before it is covered. Smith pulls the permit and schedules the inspection as part of the job — it is not something for a homeowner to arrange.
Before any digging, utility locates have to be called and marked. Gas, water, power, cable and irrigation all get marked out, and the marks have an expiry, which is one of the reasons a replacement cannot be started the same hour it is quoted. Where the lateral crosses into the right of way, the municipal connection has its own rules about who may work on what side of the property line. We sort that out before the quote, not during the dig.
How depth and access change the scope
Two houses with the same length of bad pipe can be very different jobs. Depth is the biggest variable. A shallow lateral is straightforward; a line that runs deep — and Colorado laterals are often set well down to stay below freeze depth and to reach a main that sits lower than the house — means more spoil, shoring requirements for crew safety, and a larger machine.
Access is the second variable. A clear side yard with gate access is one thing. A line under a mature landscape bed, a concrete driveway, a retaining wall or a detached garage slab is another, because the surface has to come out and go back. Soil matters too: the clay common across the Front Range digs and backfills differently than sandier ground and has to be compacted properly, or the trench settles over the following seasons and you get a long depression across the yard.
What the timeline looks like
- Diagnosis. Camera inspection and locate, so the route, depth and extent of damage are known.
- Scope and pricing. You see the findings and the options, with upfront pricing before work begins.
- Permit and utility locates. Days rather than hours, and outside anyone's control.
- Excavation and installation. Often one to a few days depending on length, depth and what is on the surface.
- Inspection and backfill. The line is signed off, then backfilled and compacted in lifts.
- Restoration. Grade restored, surfaces put back per the scope agreed up front.
Drainage is interrupted while the line is open. On most replacements that means the house is off the sewer during working hours and back in service overnight, but a long or deep run can mean longer. We tell you the real window before we start rather than discovering it with you.
Yard, driveway and hardscape restoration
Restoration is the part homeowners underestimate. Backfill is placed and compacted in lifts so the trench does not settle later. Topsoil goes back and the grade is restored so water still runs away from the foundation — important here, because a settled trench beside the house becomes a channel during a monsoon downpour.
Concrete and asphalt sections that were cut are replaced as part of the scope. Sod, planting beds and irrigation lines crossing the trench are a conversation to have before the dig, not after: what gets saved, what gets replaced, and what simply cannot survive being excavated. Mature trees are the hard case — if a trunk sits over the line, the route may have to shift or the method may need to change.
When replacement is the wrong choice
Full replacement is oversold. If the camera shows one failed section and sound pipe either side, replacing the whole lateral is work you did not need. If the pipe is intact but coated in grease and scale, hydro jetting restores the full bore without touching the ground. And if the lateral is sound but a fixture inside is slow, the problem is a branch or a vent, and no amount of outdoor excavation will change it.
There is also the case where trenchless replacement does the same job with two pits instead of a trench — generally when grade is acceptable and the route is straight enough. Replacement should be the conclusion the evidence forces, not the default recommendation. If you want a second look at footage from another contractor, we are happy to run our own camera and tell you what we see.
Frequently asked questions
When does a sewer line need full replacement instead of repair?
Full replacement makes sense when the camera shows damage along the whole run, a collapsed or deformed section, a bellied line that needs its grade reset, or pipe material at the end of its service life. One failed length with sound pipe on either side is a spot repair, not a replacement, and should be priced that way.
Can a sewer line be replaced without digging up the yard?
Not entirely. Trenchless methods avoid a continuous trench, but they still need access pits at each end, and those pits are real excavations. Trenchless also cannot correct grade on a sagging line or work through a fully collapsed section. When grade is the problem or the route has to change, open-cut excavation is the only method that does the job.
Will replacing my sewer line fix a slow drain inside the house?
Only if the lateral was the cause. A single slow sink, tub or toilet while everything else drains normally is a branch line or vent problem inside the building, and replacing the outside sewer line will not change it. That is exactly why the camera inspection comes first — it keeps a large excavation from being sold against a small interior fault.
Do I need a permit to replace a sewer line in Colorado Springs?
Yes. Sewer replacement is permitted work, and the jurisdiction typically inspects the new line before it is covered. Utility locates must also be called and marked before excavation. Smith pulls the permit and schedules inspection as part of the job, so the homeowner is not left coordinating it or discovering an inspection was missed after backfill.
What happens to my driveway, sidewalk or landscaping?
Anything over the trench has to come out. Concrete and asphalt sections are cut and replaced as part of the agreed scope, and sod and planting beds are restored or replaced. Irrigation lines crossing the route are usually cut and repaired. Mature trees directly over the line are the one thing that may force the route or the method to change.