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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

Certification of modified drawings.

Plan submittal changes which result from the suspension of a plan review must include a "Certification Of Modified Drawings". The design professional(s) responsible for the design of the project shall review all the changes from each of the disciplines and certify that the resubmitted design documents prepared under their license did, or did not, require modification as a result of any changes made.

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.

Notice to Sprinkler and Building Contractors:

Be advised, all fuel-fired equipment located in attics/concealed spaces of all residential occupancies in buildings up to four stories in height and one-and-two-family dwellings starting with building permit numbers (COMBUILD) #660755, (COMFAST) #600668, (BUILDING RESIDENTIAL) #600659 or greater must be protected with sprinklers. This requirement is in accordance with NFPA 13R, 2007 Sec. 6.9.6 and NFPA 13D, 2007 Sec. 8.6.5.

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
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.