Answer up front

Published third-party data puts gas lines in the 120–5,000 dollar range nationally — Gas work is licensed and inspected, so the permit and pressure-test steps are part of the price rather than optional extras. Every contractor prices independently, so treat that as a sanity check on a quote rather than a quote itself.

Cost ranges reported by third parties — reported ranges for gas lines in Colorado

Reported cost ranges, 2026. Ranges are published third-party figures, not quotes.
JobReported rangeWhat pushes it higher
Gas leak repair, accessible pipework$120–$250Several joints to test and a pressure recheck required before supply is restored.
Gas leak repair needing excavation$1,500–$5,000A buried line under paving or a drive, plus shoring and full surface reinstatement.
New line, per linear foot installed$15–$25Long runs, sizing for total appliance load and penetrations through the structure.
Pressure test$75–$500System size, appliance count and a test held long enough for utility sign-off.
Capping an unused line$75–$150Concealed stubs behind cabinetry that need opening up before the cap goes on.
Permits and inspections$50–$300Jurisdictions requiring a separate gas permit and a witnessed pressure test.
Shut-off valve replacement$300–$600Meter-side work coordinated with the utility, and valve sizing for the load.

Not a quote. These are third-party reported ranges, sourced from Angi, "Gas Line Repair and Replacement Costs [2026 Data]", angi.com/articles/average-gas-line-repair-and-installation-costs.htm, fetched 2026-08-11. Only a licensed contractor who has seen the job can price it.

What moves the number — the 5 factors that change the number

Pricing is set independently by each contractor, so this page lists what moves the number rather than a figure.

  1. 01

    Length of the new run and how many appliances it feeds

  2. 02

    Pipe material — black iron, CSST or copper where allowed

  3. 03

    Whether the meter or regulator capacity must be upgraded

  4. 04

    Trenching for an outdoor run to a grill, pool heater or generator

  5. 05

    Permit, pressure test and inspection requirements

Symptoms and triggers — is gas line work actually the fix?

Paying for the wrong job is the most expensive mistake here. These are the signs that point to gas lines rather than something else.

  • Smell of gas or rotten eggs near an appliance
  • A hissing sound near a gas line or meter
  • A gas appliance that will not stay lit
  • You are adding a range, dryer, grill, pool heater or generator
  • Your gas utility has red-tagged an appliance

What the work involves — so a quote can be read line by line

  1. If a leak is suspected: evacuate, call the gas utility, then a licensed plumber
  2. The system is isolated and pressure-tested to find the loss
  3. Defective sections, fittings or valves are replaced under permit
  4. New runs are sized for total appliance BTU demand and length
  5. The system is pressure-tested and inspected before gas is restored

Gas Lines cost by city in Colorado

Labour rates, permit fees and travel distance all differ across Colorado, which is why the same job is not the same number in every market.

Colorado markets with a dedicated gas lines page
CityCountyPermit authority
Gas Lines in Denver Denver CountyDenver Community Planning & Development
Gas Lines in Colorado Springs El Paso CountyPikes Peak Regional Building Department (city and El Paso County)
Gas Lines in Aurora Arapahoe CountyAurora Building Division
Gas Lines in Fort Collins Larimer CountyFort Collins Building Services
Gas Lines in Lakewood Denver CountyLakewood Building Division
Gas Lines in Westminster Adams CountySet locally
Gas Lines in Arvada Jefferson CountySet locally
Gas Lines in Parker Douglas CountySet locally
Gas Lines in Littleton Arapahoe CountySet locally
Gas Lines in Lafayette Boulder CountySet locally
Gas Lines in Louisville Boulder CountySet locally

Before anyone touches a pipe

Verify the licence. It takes two minutes.

  • Who licenses the work: State Plumbing Board, Colorado Division of Professions and Occupations (DORA) together with the local jurisdiction.
  • Who pulls the permit: the licensed contractor, never the homeowner.
  • What to ask for: the licence number, the registered name behind it, and an insurance certificate issued to the property address.
Check a licence numberColorado State Plumbing Board Colorado licensing in full
Chrome faucet with running water
Independent licensed professionals

How to avoid overpaying for gas lines

  • Get the scope in writing before the number: what is being replaced, what is being repaired, what is being left alone.
  • Ask whether the price is flat-rate or time-and-materials, and what the diagnostic charge covers.
  • Ask whether the permit and inspection fee is inside or outside the figure.
  • Ask what happens if the job opens up and turns out to be larger — get the change-order rule up front.
  • Confirm the warranty term on parts and on labour separately.
  • Verify the licence number on the Colorado State Plumbing Board register before any work starts.

Answers first

Frequently asked — gas lines cost in Colorado

I smell gas — what do I do first?

Leave the building. Do not switch lights or appliances on or off, do not use a phone inside, and do not look for the leak yourself. Call your gas utility's emergency line from outside — utilities respond to suspected leaks at no charge. Only after they have made it safe does a licensed plumber do the repair.

Can any plumber work on gas lines?

No. Gas work is separately licensed or endorsed in most states and always permitted. Confirm that the contractor holds the correct gas credential for your state before work starts, and that a permit is being pulled.

Do I need a permit to add a gas line for a range or grill?

In nearly all jurisdictions, yes. Gas piping is permitted and pressure-tested work. Unpermitted gas work is a safety issue, an insurance problem and a resale problem.

Which areas does PlumberColorado cover?

All of Colorado: the site lists every covered city with real ZIP codes, the county permit authority and nearby coverage, so requests route to a professional already working that area.

Is PlumberColorado a plumbing company?

No. Independent licensed professionals perform and contract the work directly with you. PlumberColorado routes the request and links every page to the official Colorado licence register.

Does PlumberColorado charge homeowners anything?

No. PlumberColorado may be compensated by a partner when a homeowner connects with a professional through the site. That never changes what the contractor charges for the job.

Does calling create any obligation to hire?

None. A call or a callback request is a conversation, not a contract. Scope, timing and price are only agreed if you decide to proceed with the professional handling Colorado.

Are night and weekend calls handled differently in Colorado?

Requests route around the clock, but most contractors price after-hours work differently. Ask for the after-hours rate and a committed arrival window before agreeing to a dispatch.

Get connected

Gas Lines in Colorado

The form takes half a minute. It routes to an independent licensed pro covering Colorado; everything else — scope, timing, price — you agree with them directly, licence verified first.

  • Requests handled around the clock
  • An independent licensed pro calls you back
  • No obligation to hire

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Records for this request are provided electronically; a paper copy is free on request and the agreement can be withdrawn at any time — electronic records notice.

Submitting without the box still sends the request. PlumberColorado is a referral service, not a plumbing contractor. Stop contact any time