For your information, in Sweet Home 3D version 6.0, I replaced the 24 models found in the default catalog of Sweet Home 3D and contributed under LAL license, by new models that I designed myself and published under GNU GPL or CC-BY licenses.
I also listed the 3D models of the default catalog in the new 3D models in the default catalog section of the free models page.

This should make it easier for users to handle the license of homes designed with the default catalog of Sweet Home 3D. From version 6.0, eTeks is the only copyrights owner of 3D models and textures found in the default catalogs, as well as homes proposed in File > New from demo menu item.
All these resources, found also in the src/com/eteks/sweethome3d/io/resources folder of the source code, are available under GNU GPL or CC-BY license at your choice.