Electrical & Mechanical Codes, Licenses and Permits
Find a listing of the electrical and mechanical permits issued by DPS, the codes and standards we enforce, inspection guides and useful forms for your electrical or mechanical project. We have separated the information into two columns by trade type.
If you don't find what you're looking for, email DPS.electrical-mechanical@montgomerycountymd.gov.
You may also consult our staff directory or call 3-1-1 or 240.777.0311.
Electrical Information
Electrical Permits and Inspections
- Commercial Electrical Inspection Types
- Electrical Permit with Building Permit
- Electrical Permit without Building Permit
- Electrical Permit- Low Voltage Only
- Electrical Permit Revision
- Final Only for Expired Residential Permits
- Homeowner Electrical Permit
- Inspections for Residential Electrical Permits
- Residential Generator Electrical Permit
- Residential Generator Load Calculations
- Residential PV System Installation Certification
Electrical Codes, Guidelines and Documents
- Executive Regulation 23-19 - National Electrical Code effective as 10-22-2019
- Certification of Modified Drawings
- Electrical Code Local Amendments
- Montgomery County Code Chapter 17
- NFPA 70 National Electric Code (NEC)
- Prior Codes
- Residential Permit Guidelines for Solar (PV) Systems
Electrical Licenses
All electrical licenses are now solely issued by the State of Maryland. For more information contact the Maryland State of Board of Master Electricians.
The Homeowner's Exam is currently being revised. Check the website for updates.