How much does sewer line replacement cost in Longmont, CO?

Most Longmont homeowners spend between $5,050 – $15,800 on sewer line replacement, with an average around $10,400. Local labor prices 5% above the national average, so Longmont quotes tend to land at the higher end of national ranges.

Why is sewer line replacement more or less expensive in Longmont than elsewhere?

Licensed trade labor in Longmont runs about 105% of the national average, and the best crews book out fastest in spring and early summer. Colorado weather drives material choices here, so ask contractors what they install most often in Longmont and why.

Do I need a permit for sewer line replacement in Longmont, Colorado?

Most Longmont, CO projects that change structure, electrical, plumbing or mechanical systems need a permit from the local building department; cosmetic work usually does not. Always confirm current requirements with the local building department before signing a contract, and make sure the permit is pulled by your licensed contractor.

How many quotes should I get in Longmont?

Get at least three written quotes from licensed, insured Colorado contractors. Comparing line items — not just the bottom line — is the fastest way to spot an inflated bid in the Longmont metro market.

How much does sewer line replacement cost in 2026?

Most homeowners pay between $4,800 and $15,000, with a national average near $9,900. Small, simple jobs land at the low end; large or premium-material jobs run well above the high end.

What is the cost per linear foot?

Installed pricing usually runs $80.00 to $250.00 per linear foot, including labor and materials. Expensive metros can run 15–45% higher than that range.

What drives the price up the most?

Scope and access. Larger quantities lower your per-linear foot price, but difficult access, demolition of existing work, structural repairs found mid-job, premium materials and rush scheduling each add 8–30%.

Permits are typically required when the work changes structure or ties into electrical, plumbing, gas or mechanical systems. Budget $75–$600 in most cities and confirm whether your contractor pulls it — unpermitted work can block a future home sale.

How long does the job take?

Most residential projects of this type finish in one to five working days once materials are on site. Custom orders, inspections and weather are the usual causes of delay.

How many quotes should I get?

Three. Bids on the same scope commonly vary 20–40%, and the middle bid with the strongest warranty and references is usually the best value — the cheapest bid often excludes prep, disposal or permits.

Home/Cost guides/Sewer Line Replacement/Longmont, CO

Longmont metro · Colorado

Sewer Line Replacement cost in Longmont, CO

Longmont homeowners typically pay $5,050 – $15,800 for sewer line replacement. Local labor and materials price 5% above the national average.

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Longmont average

$10,400

Typical low

$5,050

Typical high

$15,800

Per linear foot

$84 – $265

Sample ZIP

What drives Longmont pricing

Local labor

Licensed trade labor in Longmont runs about 105% of the national average, and the best crews book out fastest in spring and early summer.

Permits & code

Most Longmont, CO projects that change structure, electrical, plumbing or mechanical systems need a permit from the local building department; cosmetic work usually does not.

Climate & conditions

Colorado weather drives material choices here, so ask contractors what they install most often in Longmont and why.

Instant cost calculator

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Line length (linear feet)60 linear feet

Quality / material level

Site access

Removal / prep work

Timing

Estimated project cost

$5,985 – $8,265

Most homeowners pay around $7,125

Compare quality / material level

Cost by material in Longmont

Installed Longmont pricing per linear foot.

Option	Installed cost	Pros	Cons
Spot repair	$105 – $145	—	—
Traditional trench replacement	$145 – $195	—	—
Pipe bursting (trenchless)	$195 – $250	—	—
CIPP lining (trenchless)	$250 – $345	—	—

Where the money goes in Longmont

A typical $10,400 Longmont project, broken down by line item.

Labor0.45% · $47
Materials0.38% · $40
Permits & inspections0.05% · $5
Overhead & profit0.12% · $12

Common add-ons

Extras that show up on Longmont quotes but rarely in the headline price.

Camera inspection

$160 – $525

Cleanout installation

$420 – $1,250

Landscape and concrete restoration

$525 – $4,200

Permit and city tap fee

$210 – $1,600

Ways to save in Longmont

Get a camera inspection first — many failures only need a spot repair.
Ask whether pipe bursting avoids driveway demolition and restoration cost.
Collect three written bids on an identical scope — spreads of 20–40% are normal.
Book in the off-season and stay flexible on the start date to save 5–15%.
Bundle nearby work into one mobilization so you only pay setup and travel once.
Ask what the contractor would change to cut 10% without hurting durability.

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More Longmont research

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$1,575 – $4,200

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$8,925 – $35,700

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$18,900 – $99,750

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$5,775 – $18,900

Deck Building in Longmont

$4,620 – $12,600

Window Replacement in Longmont

$473 – $1,575

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