A few weeks ago, a Broomfield homeowner called us in a panic. Her first quote included tearing up her whole front yard, driveway and all. She wanted a second opinion before she agreed to that price.
Here's the short answer. If you're asking what is the cheapest way to replace a sewer line, trenchless methods usually win. We're The Drain Cleaning Company, a veteran-owned plumbing team licensed in Colorado (MP.03000945). We've helped homeowners across Broomfield avoid paying for more digging than they actually need.
This guide covers what drives your cost up and which replacement methods cost less. It also covers when a full replacement isn't needed, and how to lock in your lowest fair price.
What Is the Cheapest Way to Replace a Sewer Line?
The cheapest way to replace a sewer line is usually a trenchless method. Pipe bursting or cured-in-place pipe (CIPP) lining both work when your existing pipe qualifies. Both skip digging up your entire yard or driveway.
Trenchless methods: Lower excavation cost, faster completion, less damage to landscaping and hardscaping
Traditional open-trench replacement: Often needed for badly collapsed or misaligned pipe, generally the higher-cost option
Spot repair: The cheapest option overall, but it only works for isolated, localized damage
Multiple quotes: Getting two or three quotes from licensed plumbers is still the most reliable way to confirm your lowest fair price
See if your Broomfield home qualifies for trenchless sewer line replacement — request a quote and we'll tell you straight.
What Affects the Cost of Sewer Line Replacement
Every sewer line job is different. A few key factors drive the final number. Knowing them ahead of time helps you ask sharper questions when you call for quotes.
Length and depth of the damaged section: Longer, deeper runs need more time and material
Pipe material: Clay, cast iron, PVC, and old Orangeburg pipe each behave differently underground
Accessibility: Driveways, mature landscaping, and tree roots in the path add labor
Permitting and inspection requirements: Local rules add fixed costs no matter the job size
Damage severity found during camera inspection: A small crack costs far less than a full collapse
One thing we see constantly on Broomfield calls is a homeowner who assumes the whole line is bad. That guess usually follows a single backup. Most of the time, a camera tells a very different story. That one inspection can turn a five-figure quote into a much smaller repair bill.
Trenchless vs. Traditional Sewer Line Replacement: Which Costs Less?
Once you know what drives the cost up, the next question is which method costs less overall. Pipe bursting pulls a new pipe through the old one's path. The old pipe cracks apart as it goes. It needs only a couple of small access pits, not a full trench.
CIPP lining works differently. A liner coated in resin goes inside the damaged pipe and cures in place. That creates a smooth new pipe inside the old one. It works well for cracks, minor offsets, and root damage. But the host pipe needs to still hold its shape.
Traditional open-trench excavation is usually unavoidable when a pipe has fully collapsed. It costs more in restoration. Sometimes it's the only safe fix.
| Method | Typical Cost Range | Yard Disruption | Speed |
|---|---|---|---|
| Pipe bursting (trenchless) | $60–$200 per linear foot | Minimal, small access pits only | Fast, often one day |
| CIPP lining (trenchless) | $80–$250 per linear foot | Minimal to none | Fast |
| Traditional excavation | $60–$250 per linear foot, plus restoration | Full trench along pipe path | Slower, more days |
Trenchless costs can run close to traditional excavation per foot. Add back the driveway, patio, or landscaping repair a full trench needs, and trenchless usually wins on total cost. That's worth asking your plumber about directly.
We saw exactly this with the homeowner from our intro. Mature trees lined her sewer path. Pipe bursting let us avoid removing a single one. Her final bill came in well under the open-trench quote she'd already received.
Spot Repair vs. Full Replacement: When You Don't Need the Whole Line Redone
Not every damaged line needs a full replacement. Here's how to tell. A spot repair fixes one isolated section, like a single crack, joint separation, or a short run of root intrusion. It can't fix a pipe that's collapsed along its whole length or badly out of slope.
Camera inspection is what determines whether you qualify for a spot repair. Our technicians run a camera through the line first, before quoting anything.
A small, contained crack or offset usually points toward spot repair
Repeated backups at the same spot, despite cleaning, suggest the same thing
Multiple problem areas, or a pipe that's lost its round shape, point toward full replacement
Heavy corrosion across the whole line usually means replacement is the safer long-term call
A basic spot repair often runs a few hundred dollars to just over a thousand. That's far less than a full replacement. Waiting too long on a recommended replacement can turn one repair into several. It pays to get the camera inspection done early, before a small problem grows into a big one.
See if trenchless sewer line replacement works for your home — book a camera inspection today.
Practical Ways to Lower Your Sewer Line Replacement Cost
Knowing the cost factors is only half the equation. Here's how to actually lower the number you're quoted.
Get two or three quotes from licensed local plumbers before you commit to anything
Ask every plumber directly whether trenchless is an option for your specific pipe
Check City of Broomfield permit and inspection fees early, since they're fixed costs either way
Review your homeowners insurance policy for any sewer line endorsement or coverage
Ask about financing or payment plans if the repair is larger than expected
Most standard homeowners insurance policies don't cover sewer line replacement. You'd need a specific endorsement added first. It's worth a five-minute call to your insurance agent before you pay out of pocket.
Broomfield-Specific Factors That Affect Sewer Line Costs
Broomfield's older neighborhoods often still have clay or cast-iron sewer pipe from decades ago. Both materials are prone to cracking. Clay pipe is also an easy target for tree roots looking for water.
Colorado's clay-heavy soil and freeze-thaw cycles put extra stress on underground pipe every winter and spring. Ground shifts as it freezes and thaws. Older pipe joints can separate a little more with each cycle.
Sewer line work in Broomfield goes through the City and County of Broomfield Building Division. Most sewer line jobs need a permit and inspection. Fees are modest compared to the repair itself, but skipping the permit can cause bigger headaches at resale.
Pipe depth matters here too. Most residential lines sit well below Colorado's frost line. So any dig has to go deeper than homeowners often expect, and that affects both trenchless and traditional pricing.
When to Call a Professional for a Sewer Line Quote in Broomfield
An in-person camera inspection is the only way to get an accurate price for your specific pipe. Photos and descriptions over the phone can't show a plumber the real condition of your line.
During a Drain Cleaning Company inspection visit, we run a camera through your line. We walk you through what we find on-screen. Then we explain your options in plain language, so you know your price before we start any work.
When you're comparing plumbers, ask these questions:
Is trenchless replacement an option for my pipe, and why or why not?
What's included in this quote, and what could add cost later?
Do you pull the required Broomfield permits yourselves?
What's your warranty on the finished work?
We've helped homeowners across Broomfield get a clear answer instead of a guess. Schedule your sewer line replacement inspection in Broomfield and find out your real cost, not just an estimate.
Schedule your sewer line replacement inspection in Broomfield
The Drain Cleaning Company 7180 W 117th Ave D, Broomfield, CO 80020 (720) 948-4175 Available 7am–10pm, 7 days a week
Save the number of a reliable emergency plumber Broomfield CO before you need one: (720) 948-4175.