This is actually the street I live on...
So far I have done the basics of the fronts of the houses and the base, given the windows their characteristic arches on the upper edge and some windowframes, and added simple drainpipes and chimneys. I'm using Google maps for reference and utilising the Modifiers so that I only have to work on one house, and it updates the rest of the houses in the street.
From what I learned of the tutorial from my previous post, it should not be taking me a day to do one house, but something more like 40 minutes. I think I'm taking my time for a couple of reasons, one being because it is my own street. The other reason is I'm being distracted by the game of Assassins Creed my housemate is playing. Hopefully with experience I will be able to knock out the basic form for a whole street a lot faster.
However, the plus side of choosing these streets in Cardiff to model is that they all look quite similar in this area (a couple of times last year I had absent mindedly turned right too soon when walking back to my own house, only noticing my error halfway down the road), so it will be quite easy to make up a number of streets from this first house quickly, making only minor adjustments to define each street.