Mechanical protection solutions offer effective protection. These can also be retrofitted to most windows and doors and provide sound protection from intruders. Fitting out a normal detached house with a sound basic protection system will cost around EUR 2,000. This works out at about EUR 15 per month over ten years for personal security. These fittings can also protect you from crimes on your door step which have risen by 3.9 percent to 3,025 cases: apartment robberies.