In a time when we have the phenomenon of pop-up dining, stores and events, it should come as no surprise the we also have instant towns.  Like this one.  To make this town, you start with a prairie.

Clear off the cows and antelope, scrape off the grasses and weeds, then level it a bit, and you are in business.  In the distance are the amenities of the place, a community center, school and a park (for which you pay a monthly fee).

Build a few roads, but not too wide.  That way one can fit more houses in.

We do not build attached houses in America, but they can be built quite close to each other.

Nice windows to keep an eye on the neighbors.

Insert trees into the sandy soil for instant greenery.

All put together by workers from Mexico, and voila: instant town, just add water.