Buildings can be broadly defined as belonging to certain periods which have their own unique design features. However, these periods have some degree of fluidity and some builders may have built in a style outside the norm for their era. In particular, there are continually revivals of older styles. For instance in the late Victorian era there was revival in Georgian-style 6-pane sash windows as well as a Gothic revival. Of course an original building will have been modernised over the years and will have features from all different periods.
The illustration above depicts the major house building periods from the middle ages to the present day. Each of these house construction periods had their own distinct features and can be used to help you to find the age of your house.