Drainline Services, a drain and sewer contractor based in Parker, CO, does trenchless sewer repair across the Denver metro with epoxy brush coating: the line is jetted clean, milled if needed and sealed from the inside through existing cleanouts. HomeGuide's 2026 data puts trenchless work at roughly $60–$250 per foot nationally. A camera inspection decides whether your pipe qualifies.
| Point | Details |
|---|---|
| The three common methods | Pipe bursting, cured-in-place pipe (CIPP) lining and epoxy brush coating |
| Who qualifies for lining or coating | A pipe that is cracked, corroded or root-damaged but still holds its round shape |
| Who needs a dig instead | Collapsed or crushed pipe, fully separated joints and bellies that hold water |
| Market cost | About $60–$200 per foot for bursting and $90–$250 per foot for CIPP (HomeGuide, 2026) |
| Permits | Denver inspects trenchless work and requires post-repair video; in Parker, check with the Town and your sanitation district |
| What Drainline does | Camera, hydro jetting, milling, epoxy brush coating, camera again; excavation when the pipe is past saving |
What is trenchless sewer repair?
Trenchless sewer repair fixes or replaces a buried sewer line without digging a trench along its full length. Instead of opening the yard from the house to the street, the work happens from inside the pipe, through a cleanout or one or two small access pits. The lawn, driveway, patio and trees above the line stay where they are, and that restoration work is a large part of what makes a conventional dig expensive.
You will also see it searched as "trenchless excavation." The phrase sounds like a contradiction, but it describes the same idea: the excavation is limited to small, targeted pits, or skipped entirely when the work can be done through a cleanout.
How do pipe bursting, CIPP lining and epoxy brush coating compare?
They solve different problems. Bursting replaces the pipe, while lining and coating rebuild the pipe you already have.
| Method | How it works | Access | Best for | Limits |
|---|---|---|---|---|
| Pipe bursting | A bursting head is pulled through the old pipe, fracturing it outward while a new pipe is pulled in behind it | An entry pit and an exit pit | Replacing a line that is too far gone to line, along the same route | Needs pits at both ends; follows the existing route and grade |
| CIPP lining | A resin-soaked tube is inverted or pulled into the cleaned pipe and cured into a pipe-within-a-pipe | Cleanout or access pit | Longer, straighter runs that are cracked or root-damaged but still round | Tight bends are harder; branch connections must be cut back open |
| Epoxy brush coating | Structural epoxy is applied directly to the cleaned, dried pipe wall | Existing cleanouts | Lines with bends and fittings, corroded cast iron, root-damaged joints | Needs a host pipe that still holds its shape |
We compare the two lining methods in more depth in epoxy brush coating vs. CIPP lining.
Is your sewer line a candidate for trenchless repair?
For lining or coating, the deciding question is whether the pipe still holds its round shape. A liner or coating needs a wall to bond to, and it follows the shape of the pipe it is in.
Usually a good candidate:
- Cracks, pinholes or corrosion in cast iron or clay
- Roots coming in at joints that are otherwise in line
- A line running under a driveway, patio, addition or mature tree
- Old pipe that only needs to be sealed, not rerouted
Usually needs excavation, at least for one section:
- A collapsed or crushed section where the pipe has lost its shape
- Joints that have separated so far that soil shows through the gap (see offset and separated sewer joints)
- A belly that holds standing water; a lining just gives you a smoother belly
- Orangeburg fiber pipe that has deformed out of round
Many jobs are a mix: one bad section is dug and replaced, then the rest of the line is lined. Our guide to trenchless repair vs. excavation walks through that decision.
How much does trenchless sewer repair cost in the Denver metro?
Trenchless work is priced mostly by the foot, so the length of the damaged run matters most. These are published market ranges, not Drainline's price list. Your actual number depends on length, depth, access and what the camera finds.
| Work | Published range | Source |
|---|---|---|
| Pipe bursting | $60–$200 per foot | HomeGuide, 2026 |
| CIPP lining | $90–$250 per foot | HomeGuide, 2026 |
| Trenchless sewer work in Denver | $64–$265 per foot | Angi, Denver |
| Traditional dig-and-replace | $50–$250 per foot | HomeGuide, 2026 |
| Sewer camera inspection | $125–$500 | HomeGuide, 2026 |
Per foot, trenchless and digging overlap. The difference shows up in restoration: a dig under a stamped-concrete driveway or through mature landscaping adds cost that a lining job never touches. For every repair method side by side, read how much sewer line repair costs in Denver. For your own line, Drainline's $99 on-site diagnostic is how we diagnose the problem and give you an accurate quote. If you hire Drainline for the repair, the $99 is credited toward it.
Do you need a permit for trenchless sewer repair in Denver or Parker?
Plan on it, and confirm with the right office before work starts.
Denver: The City and County of Denver's Department of Transportation and Infrastructure publishes requirements for sewer repairs and trenchless work (August 2024). Unpermitted or uninspected work triggers at least a two-week hold on the associated permits. Trenchless work needs at least three days' notice and approval before it starts, it must begin outside the building footprint, and a post-repair video is due within one week. Under those trenchless guidelines, any water standing in the repaired line means denial, and minor bellies are not accepted.
Parker: The Town of Parker says permits are required "for almost everything" and asks homeowners to check with its Building Division (303.841.1970) before a project. The Town does not run the sewer system; it points residents to Parker Water and Sanitation District, Cottonwood Water and Sanitation District and Stonegate Village Metropolitan District. Ask your district and the Town what your specific job requires.
Elsewhere in Douglas County, Castle Rock and Aurora, the permitting office differs by jurisdiction. Ask any contractor who pulls the permit and whether post-repair footage is part of the job.
How does Drainline do trenchless sewer repair?
The trenchless method we use is epoxy brush coating, and every job follows the same sequence:
- Camera first. A sewer camera inspection confirms the pipe still holds its shape and marks every problem with its location and depth.
- Clean to bare pipe. Hydro jetting strips grease, scale and roots off the wall. Milling cuts out hardened scale, concrete or a failed old liner that water will not move.
- Coat. Structural epoxy is brushed across the interior through the existing cleanout, sealing cracks, pinholes, corrosion and open joints.
- Camera last. After it cures, the camera runs the line again so you see the finished pipe before you pay.
If the camera shows a collapsed, crushed or badly bellied section, we say so and quote sewer line repair and replacement instead, digging one hole where the footage says. We work in Parker, Denver, Castle Rock and Aurora. Details for Parker homeowners are on our trenchless sewer repair in Parker page.
Around Parker, the case for trenchless is usually what sits on top of the pipe: newer concrete driveways, stamped patios, finished landscaping and HOA common areas. In Denver's older neighborhoods, it is mature trees and decades-old clay and cast-iron laterals. Either way, most failing lines we scope are cracked or root-scarred but still round, and those can be rebuilt from the inside. When one is not, we would rather show you the footage and dig one hole than coat a pipe that cannot hold it.
What should you ask a trenchless contractor before you hire?
- "Can I see the camera footage?" No footage means no diagnosis.
- "Why this method for this pipe?" The answer should point to what the camera showed.
- "How will you clean the pipe first?" Linings do not bond to grease, scale or roots.
- "Who pulls the permit, and will I get the post-repair video?"
- "Is the quote in writing?"
What should you do next?
If you have been told your sewer line needs replacing, or you want to know whether it can be saved without a trench, call (720) 807-2681 or get your quote. We will scope the line, show you what the camera sees and tell you plainly whether it is a lining job, a spot dig or both.
Frequently asked questions
Who does trenchless sewer repair in the Denver metro?
Drainline Services, a drain and sewer contractor based at 10940 S Parker Rd in Parker, does trenchless sewer repair in Parker, Denver, Castle Rock and Aurora using epoxy brush coating. Whoever you hire, the job should start with a camera inspection and end with footage of the finished pipe.
Is trenchless sewer repair cheaper than digging?
Often, once restoration is counted. Per-foot prices overlap: HomeGuide's 2026 figures put pipe bursting at $60 to $200 per foot and traditional replacement at $50 to $250 per foot. Trenchless avoids most of the cost of rebuilding driveways, patios and landscaping, which is where digging gets expensive.
How long does trenchless sewer repair take?
Many epoxy-lined jobs are finished in a day, depending on the length of the line and how much cleaning and milling it needs first. The drains being lined are out of service until the coating cures. A dig-and-replace job takes longer because of excavation, backfill and site restoration.
What is trenchless excavation?
It is another name for trenchless sewer repair: fixing or replacing a buried line through a cleanout or small access pits instead of a trench along the whole run. Pipe bursting uses an entry pit and an exit pit, while lining and epoxy coating can often be done entirely through existing cleanouts.
Can trenchless repair fix a belly in a sewer line?
No. A liner or coating follows the shape of the pipe it is installed in, so a low spot that holds water stays a low spot. A belly needs that section excavated and re-laid at the right slope. Denver's trenchless inspection requirements reject a repaired line that holds standing water.