Electrical, Mechanical & Plumbing

Electrical, Mechanical, and Plumbing permits are also required for residential work. in some cases, homeowners may secure a permit and do the work themselves. Plumbers and Electricians performing work in the city must hold valid master license with this division and are required to have their work inspected. Heating and cooling contractors with a Mechanical permit may perform furnace and air conditioning work.

Work requiring a permit:

Electrical (excluding plugged appliances)
  • Heavy-up electrical service.
  • Adding new electrical fixtures and outlets.
  • Adding new electrical appliances.
  • Installing baseboard or other electric heating sources Installing exhaust fans and attic fans.
  • Adding, replacing or relocating plumbing fixtures.
  • Repairing or replacing water lines Repairing or replacing sewer lines.
  • Any changes in fixture piping Installation or replacement of water heaters.
  • Installing or replacing a furnace.
  • Installing or replacing an air conditioning unit.
  • Adding, replacing or relocating ducts, diffusers or grilles.

Electronic Submission of Commercial Electrical, Plumbing and Mechanical Applications

The City of Rockville Planning and Development Services has temporarily allowed for the submittal and review of commercial electrical, mechanical and plumbing applications while City Hall is shutdown due to the COVID-19 pandemic. Note: we will accept electronic applications only while City Hall is shutdown. We will return to standard practice once the state of emergency has been lifted and operations return to normal. 

To submit electronic applications, please email submitpermit@rockvillemd.gov with your completed application, plans and supporting documents. Each item should be a separate .pdf file. File names should reflect the content of the file (Applications, Plans, etc).

Online Permits

You can apply and pay for stand-alone residential electrical, mechanical, plumbing permits online. Occupancy permits can be obtained online. Commercial work needs to have a paper application.

Apply Online
 Still have questions? Contact: 

Permits and Inspections
111 Maryland Ave.
Rockville, MD 20850
Monday - Friday
8:00 a.m. - 4:30 p.m.