A building permit is required for all decks that are supported by footings regardless of the height above grade. For decks constructed with stairway illumination or hot tubs, spas, etc., an electrical permit may also be required.
By reviewing plans prior to issuing permits and performing field inspections for construction, alterations and improvements, the Department of Permitting Services (DPS) assists homeowners to comply with the provisions of the law.
Montgomery County Building Code - The Code incorporates, by reference, the International Residential Code (IRC) for One- and Two-Family Dwellings, 2009 edition, and the National Electric Code (NEC), 2008 edition, with local amendments.
Zoning Requirements - Homeowners should check with the Zoning Section about the yard and other zoning-related requirements. Minimum yard (setback) requirements, as set forth in the County Zoning Ordinance, represent the minimum distance from the property's boundary lines that are required for the location of any deck.
Well & Septic Requirements - Homeowners should check with the Well & Septic Section about the requirements pertaining to construction on lots served by a septic system or private well. Appropriate clearances from the septic system or well must be maintained.
Covenants and Deed Restrictions - Many of the subdivisions and developments in Montgomery County have private deed restrictions and covenants regulating the construction of decks beyond the limitations contained in County Ordinances. These amount to contractual agreements and thus the County does not enforce covenants and deed restrictions. Should you have questions about your development's restrictions, you may obtain information from your homeowners association, or civic association.
To apply for a building permit, the applicant must submit two sets of the site and construction plans along with a building permit application to the Department of Permitting Services for review. All drawings must be prepared in pen or equal on sheets no smaller than 8½x11 inches. The minimum acceptable scale is ¼ inch = 1 foot. See the table below for additional details regarding construction plans, site plans and other submittal requirements.
|Application||Application for Residential Building Permit|
|Roadside Tree Affidavit||Roadside Tree Affidavit|
|Guidelines||Guidelines for Homeowners Building Decks|
|MC Residential Deck Details|
|Fees and Taxes|
|Fee Schedule||Executive Regulations for Fees|
|Automation Enhancement Fee||Automation Enhancement Fee|
|Credit Card Form||Credit Card Authorization Form|
|Codes, Standards, Executive Regulations|
|Chapter 8||Montgomery County Code|
|Guidelines, Memorandum of Understandings, Interpretations|
|MC Residential Deck Details||Guidelines for Homeowners Building Residential Decks|
|Titleblock Requirements for Plan Submittal||Titleblock 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"||http://www3.montgomerycountymd.gov/311|
|Online Permitting Status Information and Inspections|
|Online Data Search||Search DPS|
|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|
|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)|
|National Glass Association (NGA)|
|MNCPPC: Historic Area Work Permits|
|MNCPPC: MC Atlas|
|National Fire Protection Association (NFPA)|
|Potomac Electric Power Company (PEPCO)|
|U.S. Department of Energy (DOE) by Pacific Northwest National Laboratory (PNNL)|
|Washington Gas Light Co.|