If you're going to build a homebuilt, you have some options. Some homebuilts obviously meet the LSA definition, and others obviously don't. But there are quite a number that are close and could be built to meet the requirements if the builder so chooses. For example, the Kitfox Series 7 can be built with a gross weight of up to 1,550 pounds, which would make it ineligible for sport pilot operations. But the builder has the choice to limit the maximum gross weight to 1,320 pounds in order to make the aircraft qualify for sport pilot operations.