Non-homogeneity is a lack of uniformity between real estate properties.
When a development contains no two structures that are alike, it can be referred to as a non-homogeneous development. By contrast, a homogeneous neighborhood would be filled with houses that had similar floor plans and built with similar materials.
Non-homogeneous properties are more costly to build than those which are homogeneous. As an example, in a strictly homogeneous housing development, one set of blueprints could be used throughout. Plans could be reversed, but such a house would be a mirror image of the original. Consequently, homogeneous properties are quicker and less expensive to build.
By contrast, a non-homogeneous housing development would contain custom homes. Each home would require its own architectural design and set of plans. The costs of materials would increase, due to the dissimilar materials used in the construction.