Sewer Line Replacement cost: Fort Collins vs Longmont (2026)
In 2026, sewer line replacement is about 1% less expensive in Fort Collins than in Longmont. Most homeowners pay around $8,050 in Fort Collins versus $8,150 in Longmont — a gap of roughly $100.
Fort Collins CO
Lower costTypically around $8,050
Longmont CO
Typically around $8,150
Fort Collins vs Longmont: full breakdown
| Factor | Fort Collins | Longmont |
|---|---|---|
| Typical 2026 cost | $8,050 | $8,150 |
| Estimated range | $3,350–$12,700 | $3,400–$12,850 |
| Labor index (vs US) | ×0.99 | ×1 |
| Climate zone | Cold | Cold |
| Climate factor | ×1.05 | ×1.05 |
| Local permit | $250 | $250 |
| Labor share | $4,850 | $4,900 |
| Materials/equipment | $3,200 | $3,250 |
These are 2026 planning figures for sewer line replacement, localized to each city — not formal quotes.
Is the gap worth worrying about?
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: Fort Collins vs Longmont
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 | Fort Collins | Longmont |
|---|---|---|
| Trenchless lining (CIPP) | $4,400–$12,700 | $4,450–$12,850 |
| Pipe bursting | $5,450–$13,750 | $5,500–$13,900 |
| Traditional excavation | $3,350–$13,750 | $3,400–$13,900 |
Treat these as 2026 localized estimates for sewer line replacement, not quotes from a contractor.
Sewer line replacement by line length: Fort Collins vs Longmont
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 | Fort Collins | Longmont |
|---|---|---|
| 25 ft (short run) | $2,300–$6,450 | $2,350–$6,550 |
| 50 ft (typical) | $3,350–$9,600 | $3,400–$9,700 |
| 75 ft | $4,900–$12,700 | $5,000–$12,850 |
| 100+ ft (long / deep run) | $6,450–$18,900 | $6,550–$19,150 |
All figures are 2026 localized planning estimates for sewer line replacement — get an actual quote before you commit.
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 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 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.
Underground surprises, not the plumber's brand, are what blow up a repipe or sewer budget. A camera inspection pins down the scope, a trenchless-versus-dig comparison should count the restoration bill and not just the trench, and the pipe material ought to suit your climate.
Fort Collins vs Longmont
Is sewer line replacement cheaper in Fort Collins or Longmont?
Yes — Longmont costs more. Expect around $8,150 for sewer line replacement there against $8,050 in Fort Collins, about $100 (1%) apart in 2026.
Why does sewer line replacement cost more in Longmont than Fort Collins?
Longmont's higher labor index (1 vs 0.99 in Fort Collins) is the biggest factor, with the cold/cold climate split playing a smaller role.
How much is sewer line replacement in Fort Collins, CO?
sewer line replacement in Fort Collins runs $3,350–$12,700 as of 2026 — most jobs land near $8,050.
When is the cheapest time to buy sewer line replacement — and does it differ by city?
The best window is the same in both Fort Collins and Longmont: 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 Longmont 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