Nowadays, it's quite how surprisingly similar how similar modern cities are. Not only are cities and buildings similar, but so are the slums that surround them (in the first world).
How much of this is a product of fashion (imitation of international cnstruction style) and how much is a result of the materials and building techniques existant in this stage of technological development??? Would all societies who have reached our level of technology build more or less in the same way??? Or would cities in a world in which the industrial revolution had first taken place in China or in Persia be radically different from our own??? If so, how?
Well, for buildings themselves, first you have material and budgetary limitations. You need to make them cost effective, while at the same time making them desirable, ie beautiful and functional. Beauty change from culture to culture. Functionality is affected by it. Efficiency is affected by technology, not culture, and that also change over time.
But then you have urbanism, which involves both social and economical dynamics as well as governmental decisions and maybe something akin to the theory of the broken windows.
I'd say in a different, non western dominated world, you'll have similarly built buildings in roughly the same areas and technological knowledge when they were built, but differently styled. However, for a city wide consideration, we also need to think in stuff like wars, the economic reality of the area over time, state of the transportation technology and population density when a place was urbanized (you have walked by Buenos Aires's downtown), large scale projects, business concentration and anything causing demographic changes = is people moving to the suburbs to get a larger home at the expense of more time commuting every day because traffic is manageable? Are they moving to cheaper areas, which ever they are, because of economic downturn? Who's building? The state? Large private investors? The would be owners? How long a building typically lasts before being replaced by a new one? How affordable, or not, is real state? And credit? Where are most jobs located?
In other words, you need to define a lot of details from those different societies. Cities could be a lot different. Just think Buenos Aires without the yellow fever in the 19th century (and the rich moving north), no europhile generation of the '80s or no Carlos Thays. Or, for the sake of it, without immigration in the late 19th century due some random POD. Or the Argentinean coastal cities without mortages available for the middle class in the second half of the 20th centuries. But even within the same culture, the cities would evolve different. In a whole different society? With a different economical situation? At war? Buildings would be similar. The cities layout, transit, even economy can be entirely different.