Sewer Line Replacement cost: Knoxville vs Memphis (2026)
Budget-wise, sewer line replacement in Knoxville ($7,350) runs 1% less than in Memphis ($7,450), a roughly $100 spread.
Knoxville TN
Lower costTypically around $7,350
Memphis TN
Typically around $7,450
Knoxville vs Memphis: full breakdown
| Factor | Knoxville | Memphis |
|---|---|---|
| Typical 2026 cost | $7,350 | $7,450 |
| Estimated range | $3,050–$11,600 | $3,100–$11,750 |
| Labor index (vs US) | ×0.95 | ×0.96 |
| Climate zone | Mixed | Mixed |
| Climate factor | ×1 | ×1 |
| Local permit | $225 | $225 |
| Labor share | $4,400 | $4,450 |
| Materials/equipment | $2,950 | $3,000 |
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?
That 1% gap is small — for sewer line replacement it's usually less than the spread between two local contractors' quotes, so the metro matters far less than who you hire and when you buy.
Sewer line replacement by type: Knoxville vs Memphis
Each sewer line replacement option, priced separately for both metros — the same local labor, climate and permit adjustments applied per city, so you can compare like for like.
| Type | Knoxville | Memphis |
|---|---|---|
| Trenchless lining (CIPP) | $4,000–$11,600 | $4,050–$11,750 |
| Pipe bursting | $4,950–$12,500 | $5,000–$12,700 |
| Traditional excavation | $3,050–$12,500 | $3,100–$12,700 |
All figures are 2026 localized planning estimates for sewer line replacement — get an actual quote before you commit.
Sewer line replacement by line length: Knoxville vs Memphis
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 | Knoxville | Memphis |
|---|---|---|
| 25 ft (short run) | $2,100–$5,900 | $2,150–$6,000 |
| 50 ft (typical) | $3,050–$8,750 | $3,100–$8,850 |
| 75 ft | $4,500–$11,600 | $4,550–$11,750 |
| 100+ ft (long / deep run) | $5,900–$17,250 | $6,000–$17,500 |
These are 2026 planning figures for sewer line replacement, localized to each city — not formal quotes.
What plumbing pros earn in each metro
About 60% of a sewer line replacement bill goes to labor, so wage differences between these two metros matter more than almost anything else. These are real, government-sourced (BLS OEWS) installer wages, not estimates.
No BLS metro wage series for Knoxville; we use Tennessee regional price parity instead.
Memphis metro · about 7% below the US average installer wage.
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
The only real lever here is planning: emergencies pay top dollar no matter what, but a repipe or sewer-line replacement booked in an off-peak month costs a bit less and gets more careful work.
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 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
In freeze-prone regions PEX has the advantage: cheaper, quicker to run, and forgiving when temperatures drop. Copper asks for more up front but outlasts it and can nudge resale with certain buyers. The tiebreaker is your weather and your timeline in the house, not a blanket rule.
The method case
Compare the two methods on the finished bill, not the excavation quote. Trenchless costs more to install yet skips restoring everything a trench destroys, while a conventional dig looks cheap right up until you price setting the yard right again.
The number one rule for a big plumbing job: confirm the scope with a camera before you price anything. From there, weigh trenchless against total restoration cost and pick materials suited to your climate.
Knoxville vs Memphis
Is sewer line replacement cheaper in Knoxville or Memphis?
Yes — Memphis 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 Memphis than Knoxville?
It comes down to labor: Memphis indexes at 0.96 against Knoxville's 0.95. The mixed-vs-mixed climate difference adds to the gap.
How much is sewer line replacement in Knoxville, TN?
In Knoxville, sewer line replacement typically runs $3,050–$11,600 in 2026, with most homeowners paying around $7,350.
When is the cheapest time to buy sewer line replacement — and does it differ by city?
The best window is the same in both Knoxville and Memphis: Off-peak winter for planned work, when demand drops and installers discount to keep crews busy — typically Around 5% off peak pricing. The most expensive time anywhere is an emergency replacement during anytime it becomes an emergency.
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 Memphis 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