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Additions and Alterations

When is a Building Permit Required?

If you are building, installing, and/or altering any of the following you may need a building permit:

Plan Submittal Guidelines

See Plan Submittal Guidelines for Additions or Alterations

What is the Residential Walk Thru/Fast Track Permit Processing?

This process was developed to obtain building permits for eligible projects while you wait. If the application meets these guidelines and all applicable legislation, in most cases, you will leave with the permit after a single visit in a timely manner. If the application cannot be completely processed, it will be returned to your team with partial approvals. If the application is for a complex design, structural modifications, or unusual design, it will require extensive reviews. Therefore, the application will be taken in for regular review process. Applications must be on the Residential Walk-Thru Fast Track Queue before 2:30 PM - otherwise applications may not be reviewed by the building plan reviewers while you wait and applications would be taken in for regular review process.  

Other Permits

In many circumstances, electrical, mechanical,  fire alarm, sediment controlpublic right of way , well, septic and/or fire protection permits are required to complete the project.

How can I Accelerate my Review Process?

Accelerate reviews.


Application Package
Application Building Permit Application
Residential Code Requirements Residential Code Notes
 Important IRC Code References  IRC code references
Residential Energy Code - Efficiency Certificate  Sample for Residential Energy Efficiency Certificate
 Road Side Tree Affadavit  Road Side Tree Affadavit
Fees and Taxes
Fees Fee Executive Regulation
  Automation Enhancement Fee
Credit Card Authorization Form Credit Card Authorization Form
  Bond Information
Codes, Standards, Executive Regulations
Montgomery County Code Chapter 8 Montgomery County Code
Residential Energy Code  Residential Energy Conservation Code
 Important IRC code references  Important IRC Code References
 Helpful Guidelines for IRC and IECC Requirements  Residential Code Notes
Guidelines, Memorandum of Understandings, Interpretations
Home Improvement Submittal Guidelines Home Improvement Guidelines (unavailable at this time)
Drainage Review Information  Drainage Review
 Plan Submittal Guidelines  Plan Submittal Guidelines for Additions or Alterations
 Single Family and Townhouse Use and Occupancy Single Family and Townhouse Use and Occupancy
Energy Efficiency  Sample for Residential Energy Efficiency Certificate
 Titleblock Requirements for Plan Submittal  Titleblock Requirements
Inspection Requirements
When and What Inspections Are Required Residential Inspections Timing Checklist 
Buildings Notice of Required Residential Building Inspections
Decks Notice of Required Residential Deck Inspections
Third Party Third Party Inspections
Scheduling Residential Inspections Page
Frequently Asked Questions
311 Web Portal: Enter key word "Demolition"
Online Permitting Status Information and Inspections
Online Data Services Search DPS Online
Call for More Information
In Montgomery County 311
Outside of Montgomery County 240-777-0311
Other Agencies to Contact
Other Agencies and Utilities to Contact Allegheny Power
  American Institute of Architects (AIA)
  American National Standards Institute (ANSI)
  American Society of Heating, Refrigerating & Air Conditioning Engineers (ASHRAE)
  Baltimore Gas & Electric Co. (BG&E)
  Board of Appeals
  Historical Society
  International Code Council (ICC)
  Maryland Department of Assessments and Taxation
  Maryland Department of the Environment
  Maryland Division of State Documents
  Masonry Institute of America (MIA)
  Miss Utility
  National Glass Association (NGA)
  MNCPPC: Historic Area Work Permits
  MNCPPC: MC Atlas
  MNCPPC: Zoning
  National Fire Prevention Association (NFPA)
  Potomac Electric Power Company (PEPCO)
  U.S. Department of Energy (DOE) by Pacific Northwest National Laboratory (PNNL)
  Washington Gas Light Co.