There have been many projects in the eighties that reserved areas of neighborhoods which dropped most building regulations as you describe them here, including one in Emmen, where I was born. The results are not pretty: garish, impractical, unconnected with the surroundings. Although, perhaps amenable to the first owner, once the buildings are listed for sale, few seem to appreciate the builders unique taste. Furthermore, even though some of the houses are nicely built, many of them are just out of place: a Mediterranean house next to a Scandinavian, followed by a ‘large wooden shed’.

Newer projects have more appeal, where a larger group of families work together to form a connected architectural plan, often themed with energy neutral constraints. Perhaps that could be an option for you as well?

Finally, if you buy a large plot of land (villa style) you can do almost anything you like, especially because you are probably influential and able to convince the local government of your plans.