Gas line repair is one of those jobs where the first thing to know isn't who to hire, it's what to do before you dial anyone. If you smell a strong, steady rotten-egg odor, hear hissing near a line or meter, or feel lightheaded, that's an active leak: get everyone out of the house, don't flip a switch or light anything, and call Washington Gas or 911 from outside. They shut the gas off at the meter. We are not the first call for a house full of gas, and any plumber telling you otherwise is selling you something. Once the gas is safely off and the emergency is handled, that's when the Holdsy Plumbing team comes in to find and fix the fault. Call (301) 834-2944, describe what happened, and you talk to the person who does the work, not a dispatcher.
For everything short of an active leak, gas line repair and installation is a diagnosis-first job, and where you live shapes a lot of it. A big share of the older housing stock around Gaithersburg, Montgomery Village, and the established parts of Rockville was plumbed with black-iron gas pipe, and after 40-plus years that steel corrodes at the threaded joints, which is where slow seeps almost always start. On top of that, Montgomery County requires a permit and a county inspection for gas line work, and any new appliance line has to be pressure-tested and signed off before it's put into service. Holdsy Plumbing is owner-operated and insured, we pull the permit, we pressure-test the line, and we don't leave a joint uninspected. That's the honest version of gas work in this county.