Welcome to Gwinnett County's Unified Development Ordinance (UDO) webpage.

The UDO combines the County's zoning resolution, development regulations, buffer and landscape requirements, floodplain and stormwater management regulations and other ordinances into one coordinated code document.

Visit this page regularly for the most updated version of the UDO, including periodic amendments to its text and tables.

• UDO Effective Date for Projects Submitted Memorandum (PDF)
• UDO Effective Date for CDC Package and Bond Information (PDF)
• Unified Development Ordinance (PDF)
• Unified Development Ordinance Without the Appendix (PDF)

• UDO Table of Contents (PDF)
• UDO Title 1: Administration (PDF)
• UDO Title 2: Land Use and Zoning (PDF)
• UDO Title 3: Development and Permitting (PDF)
• UDO Appendix (PDF)
• Standard Drawings

• UDOA2014-00001
• UDOA2014-00002
• UDOA2015-00001
• UDOA2015-00002
• UDOA2015-00003
• UDOA2015-00004
• UDOA2015-00005
• UDOA2016-00001
• UDOA2016-00002
• UDOA2016-00003
• UDOA2017-00001

• UDO Effective Date Memorandum
• 1st Amendment Memorandum UDOA2014-00001
• 2nd Amendment Memorandum UDOA2014-00002
• 3rd Amendment Memorandum UDOA2015-00001
• 4th Amendment Memorandum UDOA2015-00002
• 5th Amendment Memorandum UDOA2015-00003
• 6th Amendment Memorandum UDOA2015-00004
• 7th Amendment Memorandum UDOA2015-00005
• 8th Amendment Memorandum UDOA2016-00001
• 9th Amendment Memorandum UDOA2016-00002
• 10th Amendment Memorandum UDOA2016-00003
• 11th Amendment Memorandum UDOA2017-00001