If you have an older asset you should consider about implementing a survey yourself every time. Safeguard the roof and look for flaws and other signs of poor condition. Make certain that any outside woodwork is not diminishing to pieces. The majority of the problems of this kind can be explained without difficulty if they are trapped early, so an annual check-up is absolutely a fine move. Particular areas are further prone to break than others. One such section is the drains; test these often for obstructions. Rising water can be a reason for all sorts of break and can from time to time be a health risk. Cleanse them out on a regular basis and you will  see how it works in good condition.