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 you can always contact us directly using our staff directory or call 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
- Energy Compliance Documentation
- Montgomery County Code Chapter 17
- NFPA 70 National Electric Code (NEC)
- Prior Codes
- Residential Permit Guidelines for Solar (PV) Systems
Mechanical Information
Mechanical Codes, Guidelines and Documents
- Certification for Refrigerant, Hydronic and Fuel Oil Piping
- Certification for LP Gas Installations
- Certification of Modified Drawings
- International Energy Conservation Code
- International Mechanical Code
- Maryland HVACR
- Montgomery County Mechanical Code
- Prior Codes
- Required Information for Commercial Mechanical Drawings