Sewer Line Replacement cost: Collierville vs Knoxville (2026)
In 2026, sewer line replacement is about 1% more expensive in Collierville than in Knoxville. Most homeowners pay around $7,450 in Collierville versus $7,350 in Knoxville — a gap of roughly $100.
Collierville TN
Typically around $7,450
Knoxville TN
Lower costTypically around $7,350
Collierville vs Knoxville: full breakdown
| Factor | Collierville | Knoxville |
|---|---|---|
| Typical 2026 cost | $7,450 | $7,350 |
| Estimated range | $3,100–$11,750 | $3,050–$11,600 |
| Labor index (vs US) | ×0.96 | ×0.95 |
| Climate zone | Mixed | Mixed |
| Climate factor | ×1 | ×1 |
| Local permit | $225 | $225 |
| Labor share | $4,450 | $4,400 |
| Materials/equipment | $3,000 | $2,950 |
Sewer line replacement numbers here are 2026 planning ranges, adjusted per city — useful for budgeting, not a substitute for an actual quote.
Is the gap worth worrying about?
At 1%, this gap is small enough that it's usually swallowed by normal quote-to-quote variation for sewer line replacement — focus on the contractor, not the city.
Sewer line replacement by type: Collierville vs Knoxville
Below, each sewer line replacement option is priced independently for both cities, with identical local labor, climate and permit logic applied — so the comparison holds up.
| Type | Collierville | Knoxville |
|---|---|---|
| Trenchless lining (CIPP) | $4,050–$11,750 | $4,000–$11,600 |
| Pipe bursting | $5,000–$12,700 | $4,950–$12,500 |
| Traditional excavation | $3,100–$12,700 | $3,050–$12,500 |
Treat these as 2026 localized estimates for sewer line replacement, not quotes from a contractor.
Sewer line replacement by line length: Collierville vs Knoxville
Sewer replacement is priced largely by the length of line from the house to the city main, at roughly $50–$250 per foot depending on method, depth, and what's above the trench.
| Size | Collierville | Knoxville |
|---|---|---|
| 25 ft (short run) | $2,150–$6,000 | $2,100–$5,900 |
| 50 ft (typical) | $3,100–$8,850 | $3,050–$8,750 |
| 75 ft | $4,550–$11,750 | $4,500–$11,600 |
| 100+ ft (long / deep run) | $6,000–$17,500 | $5,900–$17,250 |
These are 2026 planning figures for sewer line replacement, localized to each city — not formal quotes.
What plumbing pros earn in each metro
Since labor accounts for around 60% of what a sewer line replacement job costs, it's the biggest lever behind any price gap between cities. What you're seeing below is actual BLS metro wage data for skilled installers — not a guess.
Memphis metro · about 7% below the US average installer wage.
No BLS metro wage series for Knoxville; we use Tennessee regional price parity instead.
Source: U.S. Bureau of Labor Statistics, OEWS metro wages for HVAC installers (used as a trade-labor index).
Cheapest time for sewer line replacement in either city
There's no such thing as a discount on a true emergency. The savings come from treating a repipe or sewer replacement as a planned project instead, scheduled for a quieter stretch when crews aren't stretched thin.
How do you budget a major plumbing job?
There's no fixed price for a repipe or sewer job until you know the method and what's below the yard. Our editors on how to think about the scope.
The method case
Trenchless repair costs more per foot but saves your driveway, landscaping and the restoration bill. Traditional dig is cheaper upfront only if there's little to tear up and rebuild.
The diagnosis-first case
Pricing a sewer or repipe off a hunch invites two bad outcomes: paying to replace pipe that's fine, or missing the section that's actually collapsed. A camera run through the line settles the question before a single dollar is committed.
The material case
PEX installs faster, costs less, and flexes instead of splitting when a line freezes — a real edge in cold zones. Copper carries a higher price and a longer service life, and some buyers still read it as the quality choice; let your climate and how long you'll own the home make the call.
Skip the camera and you're budgeting a repipe or sewer line on guesswork. Get the inspection, compare trenchless against the dig on what it costs to make the property whole again, and choose pipe — PEX or copper — for the temperatures it'll live in.
Collierville vs Knoxville
Is sewer line replacement cheaper in Collierville or Knoxville?
Yes — Collierville costs more. Expect around $7,450 for sewer line replacement there against $7,350 in Knoxville, about $100 (1%) apart in 2026.
Why does sewer line replacement cost more in Collierville than Knoxville?
Labor rates explain most of it — 0.96 in Collierville vs 0.95 in Knoxville. A mixed climate versus mixed accounts for the rest.
How much is sewer line replacement in Collierville, TN?
Collierville homeowners can expect $3,100 to $11,750 for sewer line replacement in 2026, with $7,450 the typical number.
When is the cheapest time to buy sewer line replacement — and does it differ by city?
Timing doesn't change by city here — Off-peak winter for planned work is the cheapest window in both Collierville and Knoxville, saving roughly Around 5%. Avoid anytime it becomes an emergency in either location, when emergency replacements push prices up.
Should I choose where to live based on sewer line replacement cost?
Rarely. The $100 difference is real but one-time, and you can often close most of it in Collierville by buying in the off-season and getting tighter, apples-to-apples bids. Ongoing factors — energy prices, climate and home condition — matter more over the life of the system.
Compare sewer line replacement in other cities
Updated June 2026 · By Serhat Özçelik