The phone call usually starts the same way. The drains are backing up, a plumber ran a camera, and somebody just said the words "you need to replace the sewer line." The next question is always the same too: what is this going to cost me?
We dig up and replace sewer lines across northern New Jersey every week, so here is the straight version. Real numbers, the things that move them, who actually owns the pipe under the street, and a couple of ways people accidentally pay more than they should.
The short answer
In our area, a spot repair, digging up and fixing one bad section, usually lands somewhere in the $3,000 to $8,000 range. A full sewer line runs $10,000 to $35,000. The length of the run is what drives it, because the further the house sits from the main the more there is to dig, and most of these jobs mean opening the street to make the connection, which brings a road opening permit, traffic control and restoration. Done properly there is every chance that pipe lasts 30 to 40 years or more, as long as roots never find it. Anyone who quotes you a single flat number over the phone without seeing the property is guessing.
Treat both of those as sanity checks rather than budgets. No two of these jobs are the same, and the ranges exist so you can tell a serious bid from a fantasy, not so you can plan around a number nobody has stood on your property to give you.
What actually moves the price
| Factor | Why it matters |
|---|---|
| Depth | The single biggest cost driver. A line four feet down is a different job than a line ten feet down. Deeper trenches need wider excavation, more spoil handling, and sometimes shoring to keep the trench safe. More on how deep NJ sewer lines run. |
| Length | A short run from a house close to the street costs less than a hundred and fifty foot run across a big front yard. |
| What is on top of it | Grass is cheap to restore. Concrete, pavers, mature landscaping, and asphalt are not. If the line runs under your driveway, the driveway section comes up and goes back. |
| The road | Out past the property line, the job picks up a road opening permit, traffic control, and restoring the road to the town's standard. This is the jump that surprises people. It can add thousands, and it is the same for every contractor because the township sets the rules. |
| The pipe itself | Houses built between the 1940s and early 1970s often have Orangeburg, a tar paper pipe that deforms as it fails. Once it flattens, lining is off the table. |
Who owns the pipe from your house to the street
This is the question underneath most "house to street" searches, and the answer is the one nobody likes: New Jersey has no statewide rule. The split is set by your municipality or your local sewerage authority, and it genuinely varies from town to town.
Read a few NJ sewer ordinances and you will notice they use two different words for two different pieces of pipe. The lateral is the run from the sewer main out to roughly the curb or property line. The house connection is the run from there to your building. Some towns hold the owner responsible for both, all the way out to the main. Others take the street side themselves and start your responsibility at the curb line or at a cleanout near the property line.
Waterford Township is an example of the strict end, and its ordinance says it in one sentence: property owners are required to keep clear, maintain and repair the sewer lateral from the sewer main to their house, building or structure. If your town is written that way, the expensive part under the pavement is yours.
What to do about it, before you accept anybody's quote. Call your town's sewer department or your MUA and ask where their responsibility ends, then ask for it in writing or get the ordinance section number. It takes one phone call, and it is the difference between a yard job and a road job. A contractor cannot answer this for you, because it is not our rule to make.
If the pipe is Orangeburg
Orangeburg is the one material that mostly removes the cheap options. It is wood pulp bound with coal tar pitch, it deforms into an egg shape as it soaks up moisture, and once it has lost its round shape there is nothing structurally sound left to line. That means an Orangeburg line is almost always a replacement, not a repair, so budget in the replacement range rather than the spot repair range even if only one section looks bad on camera today. The rest of that pipe is the same age.
We wrote a plain-English guide to identifying Orangeburg pipe if your house dates to that era.
Repair, replace, or line it?
A camera inspection settles this, and it is worth doing before anyone digs. The question underneath it is simpler than it looks: is the problem this section, or is the problem this pipe?
Repair, when the pipe is fine and one spot is not
A collapsed piece of PVC. Root intrusion at a joint. Those are local failures in a line that is otherwise sound, and they get either lined or dug up and repaired in one section. Repairing root intrusion in a five foot section typically runs $3,000 to $8,000, and that includes the plumbing, the materials and the digging.
The reason that is worth doing is that the rest of the pipe has years left. You are fixing a spot, not postponing the inevitable.
Replace, when the material itself is the problem
Orangeburg. Cast iron. Anything that old. Here a spot repair is the wrong call, and not because it will not work. It will work, on that section. The trouble is that every other foot of that line is the same age and the same material, so the next failure is not a risk, it is a schedule. Spending several thousand dollars on one section of a pipe that is failing along its whole length is a very small bandage on a much bigger problem.
If your line came back Orangeburg, read our guide to what Orangeburg is and how it fails. The short version is that it deforms rather than cracks, which is also why lining is usually off the table.
Lining, where it fits
Trenchless lining has its place, mostly on lines with good slope and a round shape, and runs roughly $80 to $250 a foot. It cannot fix a collapsed or badly deformed pipe, and on a short residential run the math often favors just digging it once and being done for fifty years.
How to not overpay
Here is the part most homeowners never hear. When a sewer line needs digging, many plumbing companies call an excavation contractor to do the dig, add their margin on top, and hand you one bill. There is nothing shady about it, it is how the trades work, but it means you are paying two companies for one hole.
We are the excavation crew in that story. Homeowners can call us directly. We dig out the line, make or coordinate the repair, backfill in compacted lifts so the trench does not sink next spring, and put the yard back.
Do you need a plumber or an excavator?
This is worth settling early, because calling the wrong trade first costs you a visit. The dividing line is not who is nicer, it is what is actually wrong with the pipe.
| What is happening | Who to call |
|---|---|
| The line is clogged, slow or backing up, but the pipe itself is intact | A plumber. They can camera it, snake it and jet it, and jetting a blocked line is their tool, not ours. Very often that is the whole fix and nobody digs anything. |
| Anything you can see in the house: a pipe you can point at, a water heater, a boiler, a fixture or an appliance | A plumber. That is standard plumbing rather than underground utility work. |
| The pipe is broken, collapsed, root-intruded or deformed, below ground | Us, directly. No jetter fixes a pipe that has lost its shape, and this is the work we do. We are not going to hand you off. |
The camera is what tells you which of those you have, which is why the sequence usually runs plumber first, camera, then a call to us only if the picture shows broken pipe rather than a blockage. If you do not already use a plumber, we send people to M Miller Plumbing, Heating and Drain Cleaning in Hamburg.
What we will not do is take a digging job that was really a clog. If a jetter would have solved it, you should not be paying for an excavator.
What happens on the actual job
Every dig starts with a free 811 mark-out, usually about three business days out, though emergencies move faster under the emergency provisions. Most residential sewer replacements are one to two days of work: dig, replace, inspect, backfill, restore. You will have water the whole time in most cases, and we schedule the no-flush window with you, not around you.
Common questions
What does it cost to replace a sewer line from the house to the street? $10,000 to $35,000 in our area. Length of run is the main driver, and opening the street to make the connection brings a road opening permit, traffic control and restoration with it.
Am I responsible for the sewer pipe under the street? It depends entirely on your town, because New Jersey sets this by local ordinance rather than statewide. Some ordinances make the owner responsible from the sewer main all the way to the building. Others stop the owner's responsibility at the curb line. Ask your sewer department where their responsibility ends before you accept a quote that includes the street.
Do I need a plumber or an excavator? It depends whether the pipe is blocked or broken. A clog goes to a plumber: they can camera, snake and jet it, and jetting is their tool. Anything visible inside the house is theirs too. A pipe that is broken, collapsed, root-intruded or deformed is ours, because no jetter fixes a pipe that has lost its shape. The camera is what tells you which one you have, so plumber first, camera, then us if the picture shows broken pipe.
Should I repair the sewer line or replace the whole thing? Ask whether the problem is the section or the pipe. Root intrusion or one collapsed piece of PVC in an otherwise sound line is a repair, typically $3,000 to $8,000 for a five foot section including the plumbing, materials and digging. But if the line is Orangeburg or cast iron, the material itself is what is failing, and the rest of the run is the same age. Repairing one section of that is a small bandage on a much bigger problem, because the next failure is a schedule rather than a risk.
Can a sewer line be replaced without digging up the yard? Sometimes. Lining works on a pipe that still holds its round shape and has decent slope. It does not work on a collapsed or deformed line, which rules it out for most failed Orangeburg. Directional boring is the other way to avoid an open trench, and we cover when that works in our guide to replacing a line under a driveway.
How much does it cost to replace Orangeburg pipe? Plan on the full replacement range rather than a repair. Deformed Orangeburg cannot be lined, and the sections that look fine today are the same age as the section that failed.
How long does the job take? Most residential sewer replacements are one to two days, start to restored. A run under a road takes longer because the permit, traffic control and road restoration all have their own schedule.
Still not sure how this applies to your property? That is what a free on-site estimate is for. Call 862-268-2510 or tell us what is going on, and we will give you a straight answer, including when the answer is that you do not need us.
Get a real number
If your drains are backing up in Sussex, Warren, Morris, or Hunterdon County, call us at 862-268-2510 and describe what is happening. We will tell you honestly whether it sounds like a plumber problem or a dig problem, and if it is a dig problem, we will come look and put a real number on it. Same day for active emergencies. More detail on the work itself is on our sewer and water line page.
Code and source references
- Township of Waterford, NJ, Chapter 226, Sewers, § 226-2(B), an example of an ordinance placing lateral maintenance on the property owner from the sewer main to the building.
- City of Paterson, NJ, Chapter 407, Article III, Maintenance of Sewer Laterals and House Connections, an example of a code that treats the lateral and the house connection as two separate things.
- N.J.A.C. 7:14A-23.6, Sanitary sewer design, the three-foot minimum cover for sewers, force mains and laterals that sets how deep the dig starts.
Ordinances change and every town writes its own. This is general information, not a ruling on your address. Confirm the split with your municipality or sewerage authority before you commit to a scope of work.
Every range we publish, with what moves each one, is on what this work costs.