Those houses are more densely packed than in what I'd call a suburb. And much more importantly, nothing in that area is more than a few blocks from some sort of commerce. Suburbia (at least in the US) isn't so much about the houses themselves, but what's around them. I'm in one of those "streetcar suburbs" and the nearest store is a mile away and the bus comes every 20 minutes. I could get by without a car but it would be very annoying. You might find a fairly similar set of houses in the nearby city, but they'll be near a lot of stuff and living without a car would be far more practical.
Yeah, I wouldn't call that a suburb either for practical purposes. It would be one by the definition of "small city near big city," but in terms of how it functions it looks like city to me.
