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Naperview:•T&rd6� Taskforce-Full Report:Overview of Research http://www.naperville.it.us/DCD/`teardown/researa.htm design. It is possible that zoning ordinance---regulations could be modified to better . control residential bulk-and site design in order to encourage compatible infill development. • Aside from bulk issues; some neighborhoods have specific design elements (i.e. detached garages)that help define the character of the area:For.instance, approximately 80% of the.existing homes in half of the study areas have detached garages. When infill . development does not incorporate compatible design features,the new construction seems out of character with its neighbors. These features need to be recognized and can be.preserved through.zoning regulations. . • Naperville's current Zoning prdinance is inconsistent with existing development. conditions in some neighborhoods. For'instance,many homes in Naperville'.s R2 Zoning Districts were developed.in advance of the current regulations (which require a 25 foot front yard setback)with front yard setbacks ranging from 10 to 15 feet. These inconsistencies need to be addressed:because when infill development is required to adhere to standards that do not reflect the existing development pattern, new construction is out of character with the existing neighborhood (i.e. new construction is set back 10-15 feet further than existing houses). [Return to ton of pdke] 3)Naperville's current Zoning Ordinance is inadequate to control the bulk of residential structures and needs to be modified • An analysis was conducted to determine the maximum building envelope(in square feet)that is permitted under the City's existing R2 and RIB zoning regulations. It was found that the maximum building envelope on a 7,500 square,foot lot designated R2 is 3,800 square feet; or 50.7% of the total lot area. The maximum,building envelope on a 7,500 square foot lot designated RIB is 3,420 square feet, or.45.6% of the:total lot . area. Please note that these figures reflect.the buildable area.at the ground level. The actual building size could be doubled to approximately 7,000 square feet by adding a second story. • Most of the homes that had been demolished were between.700 - 1,500 squareTfeet in size, while the replacement construction has generally ranged between 2,000 4,'000 square feet..While in some instances the size of this infill construction appears t be too large and 'but of character" with its neighbors,the structures are actually well ..below the maximum size(as described above)that could have been constructed on the. lot. • When comparing the existing conditions to the requirements of the zoning ordinance,. it is clear that greater bulk could occur on most of the existing lots. The:Teardown Task Force,and staff believe the City's zoning regulations need to be modified to better control the potential size of infill construction and additions onto.existing structures. [Return to ton of haze] 4) There is no single solution that can be utilized.to addressteardownlinfill development. • Bulk issues are contextual. Regulations that work well to control the.bulk of infill development in'one neighborhood may be inadequate(or too restrictive)for other neighborhoods. Existing development patterns and bulk characteristics need to be the basis for establishing new standards. Neighborhood character,issues are somewhat subjective. While bulk regulations can be