It depends how old the house is you want to model, and where. Bricks with lightening holes became common during the 1930s so it's possible that a house could be built of them and then knocked down during the war (bit of a pisser for the owner, though). But the vast majority of buildings all through Europe would have been much older and would have been made with traditional solid bricks. These aren't pure rectangles, though. Most have a roof-shaped indentation in one face called a frog, which is where the bulk of the mortar goes and helps to bond courses together. I'm afraid I'm not too sure how widely they were used - certainly heaps of them in the UK, but I'm not hugely familiar with continental techniques.
Then there's other questions: colour; finish (glazed? over-fired?); proportions (not all bricks are the same size); machine-made, hand-made, something else?; pointing technique. I hate to say it, but best check the area you're intending to model, to see what the prevailing style was.
And you may want to bear in mind that bricks on the outsides of buildings would have been seriously discoloured by exposure to coal smoke, as would any making up the chimney breast. In London, for example, many older buildings are effectively black, but the bricks when cleaned come out sand-coloured. This means that a collapsed building would show a lot of bricks with one face darker than the rest; and any that had broken would have the inside even less discoloured than the rest.