Underground Gas Line Installation in Chicago

When you’re adding a gas line to your detached garage, outdoor kitchen, or backyard BBQ grill, the work must be handled by licensed professionals who understand gas piping codes, safety standards, and local permitting requirements.

At Four Seasons Heating, Air Conditioning, Plumbing & Electric, we are licensed plumbers and master electricians in Illinois. We have more licensed professionals than any other contractor in the Chicagoland area. For over 50 years, we’ve been recognized as the authority in underground gas line installation, trusted by homeowners, inspectors, and even local municipalities to perform these complex and safety-critical projects.

Underground gas line installation is a specialized trade that combines plumbing, electrical, excavation, and safety expertise. Many important factors influence the total cost. These include the trench length, soil type, and pipe material.

Other factors include:

• Permit and inspection fees
• Labor costs
• Crew size
• Restoration work
• Distance from the gas meter to the appliance

This work includes digging and licensed gas fitting. It is usually done by skilled teams like Four Seasons' licensed plumbers. They make sure the work is safe, reliable, and lasts a long time.

Before the first shovel hits the ground, a gas line installation requires permits, inspections, and careful planning. Four Seasons handles the entire process start to finish — from filing the proper permits to marking utilities and coordinating with your local city or village. Gas piping must follow both the International Fuel Gas Code (IFGC) and local amendments specific to Chicagoland suburbs.

Our licensed plumbers ensure that all utilities are properly located through 811 JULIE utility marking. They check that trench depths meet or exceed the required 18–24 inches. All materials meet local and national gas safety codes, and the system passes a full pressure test inspection before being backfilled.

At Four Seasons Heating, Air Conditioning, Plumbing & Electric, we follow a proven, code-compliant process for every underground gas line installation:

1. Site survey and utility marking (811 JULIE)
2. Permit filing with your local municipality
3. Excavation to the correct burial depth
4. Installation of the proper material and tracer wire
5. Pressure testing the entire system for leaks
6. Municipal inspection by your city, town, or village
7. Backfill and site restoration once approved.

Our technicians are highly trained and licensed to ensure complete compliance and safety. In fact, many local inspectors and municipalities throughout the Chicago area call on Four Seasons to perform this type of work when specialized expertise is required.