Plumbing Permits in Maryland: What Requires a Permit and What Does Not
July 5, 2026 · 5 min read · By Deep Dive Plumbing Maryland
Plumbing permits exist to protect homeowners — they ensure that significant plumbing work is inspected by a qualified inspector and meets code requirements. Here is what typically requires a permit in Maryland and what does not.
Usually Requires a Permit
Usually Does Not Require a Permit
Frequently Asked Questions
Do I need a permit to replace my water heater in Maryland?
In most Maryland jurisdictions, yes — a permit is required for water heater replacement. The permit ensures the installation is inspected for proper venting, T&P valve installation, expansion tank, and gas or electrical connections. A licensed plumber will pull the permit as part of the job. Unpermitted water heater installations can create insurance and liability issues.
Who pulls the permit — me or the plumber?
In most cases, the licensed plumber pulls the permit on your behalf. This is standard practice and is included in the job cost. The plumber is responsible for ensuring the work passes inspection. Never hire a contractor who asks you to pull the permit yourself for their work — this shifts liability to you.
What happens if I do plumbing work without a permit?
Unpermitted plumbing work can: void your homeowner's insurance for related claims, create problems when you sell the home (unpermitted work must be disclosed), result in fines if discovered, and leave you liable for any damage caused by the unpermitted work. In Maryland, unpermitted work can also result in a stop-work order and requirement to remove and redo the work.
How much does a plumbing permit cost in Maryland?
Plumbing permit fees in Maryland vary by jurisdiction. In Calvert County, permit fees for typical plumbing work range from contact us for a free estimate. In Anne Arundel County, fees are similar. Your plumber will include the permit fee in their quote. The inspection is typically included in the permit fee.
Related Resources
