Sewer Line Replacement cost: Knoxville vs New South Memphis (2026)
The two metros aren't quite in sync on sewer line replacement: Knoxville sits 1% below New South Memphis, or roughly $7,350 versus $7,450 — about $100 apart.
Knoxville TN
Lower costTypically around $7,350
New South Memphis TN
Typically around $7,450
Knoxville vs New South Memphis: full breakdown
| Factor | Knoxville | New South 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 price difference a dealbreaker?
1% is within noise for sewer line replacement — contractor selection and timing move the price more than which of these two metros you're in.
Sewer line replacement by type: Knoxville vs New South Memphis
Every sewer line replacement type gets its own localized price for each metro, using the same labor, climate and permit adjustments — a true apples-to-apples comparison.
| Type | Knoxville | New South 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 |
Localized 2026 planning estimates — not quotes. Each city adjusts the national sewer line replacement range for local labor, climate and permits.
Sewer line replacement by line length: Knoxville vs New South 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 | New South 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 |
Treat these as 2026 localized estimates for sewer line replacement, not quotes from a contractor.
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.
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
Emergency plumbing work is priced for urgency, full stop. A repipe or sewer line, on the other hand, is a project you can schedule — and scheduling it for a slow month gets you a slightly better rate and a crew that isn't rushing.
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
Never budget a sewer or repipe job from a guess. A camera inspection confirms the real scope and stops you paying for work you don't need — or being blindsided by work you do.
The material case
PEX is cheaper, faster and freeze-tolerant; copper costs more but lasts longer and some buyers prefer it. Match the material to your climate and how long you'll own the home.
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.
Get the camera inspection first, weigh trenchless against the full restoration cost — not just the dig — and pick pipe material for your climate. The scope, not the brand, sets the price.
Knoxville vs New South Memphis
Is sewer line replacement cheaper in Knoxville or New South Memphis?
Knoxville comes out ahead here, at roughly $7,350 for sewer line replacement compared with $7,450 in New South Memphis — a 1% ($100) gap as of 2026.
Why does sewer line replacement cost more in New South Memphis than Knoxville?
New South Memphis's higher labor index (0.96 vs 0.95 in Knoxville) is the biggest factor, with the mixed/mixed climate split playing a smaller role.
How much is sewer line replacement in Knoxville, TN?
Knoxville homeowners can expect $3,050 to $11,600 for sewer line replacement in 2026, with $7,350 the typical number.
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 New South 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?
That would be a stretch. $100 is a one-time difference, not an ongoing one, and off-season buying plus apples-to-apples bids in New South Memphis can close a good chunk of it. What matters more long-term is energy costs, climate and the condition of the home.
Compare sewer line replacement in other cities
Updated June 2026 · By Serhat Özçelik