Castle Pines homes get natural gas from Black Hills Energy, so if you smell gas, leave the house, call 911, then call Black Hills Energy at the emergency number on your gas bill. For piping repairs and new lines after the meter, call the number on this page to be connected with a local plumber in Castle Pines.

Signs that call for a look
- Gas odor: leave first, then make calls from outdoors
- A hiss at a fireplace valve, range connection or furnace
- Lazy yellow flames on a burner that used to burn blue
- Scorch marks or soot near a vent
- Bubbling when soapy water touches a fitting during routine work
What Castle Pines homeowners should know
Unlike most of the north metro, Castle Pines is not on Xcel Energy for gas. Black Hills Energy lists the city in its Colorado gas service territory, so leak calls and meter questions go to Black Hills. Keep a copy of their emergency number where you can reach it from outside, since it is printed on the bill rather than one you are likely to remember.
The city itself only dates to 2008, when the Castle Pines North community incorporated, and much of the housing is suburban construction from recent decades. That usually means flexible tubing, gas fireplaces and gas ranges, and sometimes an outdoor kitchen or fire feature added later. Additions made after the original build are where undersized lines and missing bonding tend to show up.
The City of Castle Pines Building Division issues permits, with inspections done by city staff and applications handled in CommunityCore. Water heater replacement is on its list of 1-Stop permits.
What changes the price
- Run length from the meter to the new appliance or outdoor feature
- Trenching for a buried line to a patio, fire pit or grill island
- Upsizing a trunk line that was sized only for the original appliances
- Bonding work on flexible tubing
- The permit and city inspection
Calling for help
Use the number on this page to be connected with an independent plumber who works on gas lines in Castle Pines. Mention what you want to add or what you noticed, where the meter is, and whether any digging is involved. If a buried line is part of the job, the plumber will arrange utility locates before excavating.
If the work involves a fireplace, range or furnace that will be off for a while, plan around it, especially in winter when nights get cold fast in northern Douglas County. After the piping is tested and the appliances are relit, the plumber should check each burner for a clean flame before leaving. Ask for a note of what was tested and the permit number for your records.
Gas Line Services questions in Castle Pines
I smell gas inside. What should I do before anything else?
Can a gas line be run outside for a grill, fire pit or patio heater?
Do I need to call before digging near a buried gas line?
What is the yellow corrugated tubing on my gas lines, and why does bonding matter?
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