Sewer Line Replacement cost: Aurora vs Longmont (2026)
Aurora runs 9% higher than Longmont for sewer line replacement — expect around $8,850 in Aurora against $8,150 in Longmont, a difference of about $700.
Aurora CO
Typically around $8,850
Longmont CO
Lower costTypically around $8,150
Aurora vs Longmont: full breakdown
| Factor | Aurora | Longmont |
|---|---|---|
| Typical 2026 cost | $8,850 | $8,150 |
| Estimated range | $3,700–$14,000 | $3,400–$12,850 |
| Labor index (vs US) | ×1.09 | ×1 |
| Climate zone | Cold | Cold |
| Climate factor | ×1.05 | ×1.05 |
| Local permit | $275 | $250 |
| Labor share | $5,300 | $4,900 |
| Materials/equipment | $3,550 | $3,250 |
These are 2026 planning figures for sewer line replacement, localized to each city — not formal quotes.
How much should this gap actually matter?
A 9% gap is meaningful on a project this size — about $700. That's real money, but it's often within reach of off-season timing and a tighter apples-to-apples bid in Aurora.
Sewer line replacement by type: Aurora vs Longmont
We localize each sewer line replacement type separately for both metros, applying the same labor, climate and permit adjustments each time, so you're comparing like for like.
| Type | Aurora | Longmont |
|---|---|---|
| Trenchless lining (CIPP) | $4,850–$14,000 | $4,450–$12,850 |
| Pipe bursting | $6,000–$15,150 | $5,500–$13,900 |
| Traditional excavation | $3,700–$15,150 | $3,400–$13,900 |
These are 2026 planning figures for sewer line replacement, localized to each city — not formal quotes.
Sewer line replacement by line length: Aurora 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 | Aurora | Longmont |
|---|---|---|
| 25 ft (short run) | $2,550–$7,150 | $2,350–$6,550 |
| 50 ft (typical) | $3,700–$10,550 | $3,400–$9,700 |
| 75 ft | $5,400–$14,000 | $5,000–$12,850 |
| 100+ ft (long / deep run) | $7,150–$20,850 | $6,550–$19,150 |
Sewer line replacement numbers here are 2026 planning ranges, adjusted per city — useful for budgeting, not a substitute for an actual quote.
What plumbing pros earn in each metro
Roughly 60% of what you pay for sewer line replacement is labor, which is why local wages explain most of the price gap. The numbers below are actual metro wages for skilled installers, sourced from BLS OEWS — not guesses.
Denver-Aurora-Centennial metro · about 15% above the US average installer wage.
No BLS metro wage series for Longmont; we use Colorado 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
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?
Big plumbing jobs are unpredictable by nature — the method chosen and what's actually underground move the price more than anything else. Our editors weigh in.
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
Trenchless runs a higher per-foot rate, but the savings hide in what you never have to rebuild — no torn-up driveway, no re-sodded lawn, no ripped-out patio. Open-cut digging only wins on price when there's almost nothing on top of the line to put back.
The diagnosis-first case
The estimate is only as honest as the inspection behind it. Push a camera down the line first and the scope becomes a documented fact — no padding for problems that aren't there, no ambush once the trench is open.
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.
Aurora vs Longmont
Is sewer line replacement cheaper in Aurora or Longmont?
Yes — Aurora costs more. Expect around $8,850 for sewer line replacement there against $8,150 in Longmont, about $700 (9%) apart in 2026.
Why does sewer line replacement cost more in Aurora than Longmont?
It comes down to labor: Aurora indexes at 1.09 against Longmont's 1. The cold-vs-cold climate difference, plus permit fees, adds to the gap.
How much is sewer line replacement in Aurora, CO?
Expect to pay $3,700 to $14,000 for sewer line replacement in Aurora in 2026, averaging around $8,850.
When is the cheapest time to buy sewer line replacement — and does it differ by city?
The best window is the same in both Aurora 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?
Rarely. The $700 difference is real but one-time, and you can often close most of it in Aurora 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