Flammable Gas - Checklist – Dallas, TX

The Flammable Gas - Checklist is the City of Dallas checklist, titled "Flammable Gas Application Checklist and Required Documents," that tells applicants which gas type is involved and which documents must accompany a gas application reviewed for plumbing inspection.

The top of the form offers four boxes, one for each gas type it covers:

• Compressed Natural Gas (CNG)
• Liquid Natural Gas (LNG)
• Liquified Petroleum Gas (LP-Gas)
• Hydrogen Gas

Under the heading "Other requirements or special provisions," the form lists five items: a flammable liquid application for associated tank or piping permits above 100 gallons water capacity; piping inside a structure performed by a master plumber with a Texas Railroad Commission endorsement and a valid plumbing permit; a site plan and architectural overlay drawn to scale; the manufacturer's specifications for the tank and related appurtenances; and a copy of liability insurance.

The header names the Planning & Development Department, 320 E Jefferson Blvd, Dallas TX 75203, (214) 948-4480. The form carries the date 4/18/2025. It is a checklist, not a standalone permit: it states that staff cannot accept incomplete or illegible documents.

Anyone applying in Dallas for work involving a flammable gas, whether compressed natural gas (CNG), liquid natural gas (LNG), liquified petroleum gas (LP-gas) or hydrogen gas, uses this checklist to see what must go with the application. The form is marked for plumbing inspection use.

Conditions printed on the form:

• If the associated gas tank or piping permit involves more than 100 gallons water capacity, a flammable liquid application must accompany it.
• If piping will run inside a structure, the work must be performed by a master plumber who holds an endorsement from the Texas Railroad Commission and a valid plumbing permit.

The form does not describe who may sign or submit for another person, and it sets no exclusions beyond those conditions. For questions about whether your project falls under it, the header lists the department's phone number, (214) 948-4480.

Complete the checklist when you prepare a flammable gas application for plumbing inspection review in Dallas, before you hand in the application package. The form prints no deadline or processing time of its own. What it does state is that staff cannot accept incomplete or illegible documents, so every item that applies to your project should be gathered and legible when you submit. Call the department at (214) 948-4480 for timing questions.

The checklist prints no submission channel of its own. Its header gives the department's contact details: Planning & Development Department, 320 E Jefferson Blvd, Dallas TX 75203, phone (214) 948-4480.

• Contact the department: call (214) 948-4480 to confirm how and where to deliver the application package.
• Package contents: include the documents the checklist lists that apply to your project: the flammable liquid application when the 100-gallon water capacity threshold is exceeded, the site plan and architectural overlay, the manufacturer's specifications, a copy of liability insurance, and the master plumber and plumbing permit details for piping inside a structure.
• Quality of documents: staff cannot accept incomplete or illegible documents.

The form names no fee. FillingPDF lets you fill out and download the PDF; submission follows the city's channels above.