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.

Online Permits

You can apply and pay for electrical, mechanical, plumbing and occupancy permits online.

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.