Living in glass houses
The cost of replacing a window, a door, even a roof-slate or a garden wall can be so much more than that involved in repairing an ordinary semi-detached home that it is best to behave with a certain amount of caution. Prevention, in the case of old houses, is always better than cure.
Recent legislation places extra responsibilities on the owners of what are usually described as listed buildings. Their owners by and large accept the restrictions gladly where they make sense especially as there is some help available to meet the costs of maintenance.