In the 1930ies many Dutch neighborhoods were built in a style dominated by brick and full of detail. These houses are still very popular and they are being copied a lot since the 1990ies. But the models in this set are made after the original 1930ies housing.
These row houses are mainly for the a bit less wealthy middle class, but still certainly R$$.
In the 1960ies Modernism was at its peak. In the Netherlands hundreds of thousands of houses were built in efficient ways. Rowhouses were arranged in blocks and together with flats and shopping areas, schools and other facilities they were arranged into neighborhoods. All cities and most of the villages have these areas. And although they are being loathed these days, in that time they were seen as modern, clean, beautiful and spacey for most family households.