Johnsonville Community Association's largest project to date has been the 2009-2013 Environment Court challenge against WCC's efforts to intensify central Johnsonville via the imposition of Medium Density Residential Area (MDRA) residential zoning status. This category of land zoning was seen as having a flow-on effect of sacrificing many aspects of the suburb's amenities and community infrastructure in the process.

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In July 2014 we celebrated four major victories resulting from this challenge. These were as follows:

 

• Major concession for mitigating negative traffic and parking impacts of high-density development

• Removal of a section of Middleton Rd, SH1 from MDRA (due mainly to poor pedestrian access)

• Removal of the area East of SH1 from MDRA, (due mainly to poor pedestrian access)

• Requirement for a "Johnsonville Specific" design guide as an appendix to the District plan to ensure higher quality housing development