The RFSI developed a database of sprinkler ordinances that cover new construction and retrofit. To find an ordinance that could serve as a model for your community, contact the director of the Residential Fire Safety Institute. After discussing your situation, e.g., size of community, type of department, the problem that you are trying to resolve or prevent, etc., an ordinance that closely mimicks your community could be available. You can send the RFSI an email at lwintermute@firesafehome.org. The "Primer on Adopting Sprinkler Ordinances" is an excellent tool to help you draft an ordinance for your specific needs.
Sample Maryland Residential Sprinkler Ordinances and Fire Code:
Ordinances in Maryland with Map