Protecting Vacant or Abandoned Premises

In the interests of future site safety, we cannot disclose the location of this particular site. However, this case study demonstrates the efficacy of combined security systems in protecting void, vacant, and abandoned buildings.



Project Length

6 months


The property is a large building that was formerly used as a hospital. Since closing down over five years ago, the building has fallen into disrepair, becoming something of an eyesore for the local community. Not only that, as with many abandoned buildings, the old hospital attracted a wide range of trespassers, including vandals, drug users, and urban explorers. The surrounding grounds had become overgrown and dangerous. This, combined with the sheer number of intruders on the property, was causing damage to the building, putting the general public at risk, and creating an insurance risk for its owners.

Marpol Security’s job was to take control of the premises and lock it down thoroughly, preventing further intrusions and reducing the risk to both our client and the local community.

When we purchased the site, we knew that there had been historic issues with people trespassing. Marpol’s Operations Team attended site and provided a comprehensive assessment of measures needed to secure it. Since implementing the recommendations Marpol made in their report, I have been impressed by the diligence of their 24 hour monitoring of the mobile CCTV Towers on site, and the speed of their response service when trespassers have tried their luck. It has given us peace of mind to know that the site is safe and secure. I would have no hesitation recommending Marpol Security to anyone looking for a professional security service

Daniel Hynd
Managing Director, Promenade Estates Ltd.

CCTV Tower


Like all of our security solutions, the job started with a full risk assessment of the site and the security measures already in place. We spent a full day at the hospital, carefully inspecting access points and areas hidden by dense vegetation growth where trespassers had been communing. We also check out potential health, safety, and fire risks, as well as vulnerabilities to the building itself.

As part of the assessment process, we took a look at some of the footage recorded at the hospital by urban explorers and subsequently posted online. Taking all of this into account, we recommended a technological approach to security rather than one that relied on manned security, as we believe it would be more effective in this case.

The proposed system would combine CCTV cameras, motion sensors, and audio challenge equipment. This would result in 24-hour monitoring of the site, giving us improved evidence capture thanks to our high-resolution equipment. Intelligent sensing technology would raise the alarm in the event of a site breach, immediately alerting our team. The audio challenge speaker technology allows our monitoring unit to communicate with anybody caught on the premises. Authorised personnel would be able to confirm their identity in real time, while our team could instruct any trespassers to leave.

This integrated system meant we could spot anyone on the site who was not supposed to be there and instruct our rapid response driver teams or the local police force intervene in the event of a security breach. Since our mobile patrol units are always active in the area, they could also be deployed as manned security, should the need arise.

The client was satisfied with our bespoke proposal. We quickly made the site less attractive to trespassers and easier to monitor for us by removing hazardous waste and overgrown vegetation, repairing access points, addressing fire risks, and bolstering the perimeter fence line. Not only did these steps make the site a safer place for contractors and authorised personnel, they also ensured a clear line of sight for our CCTV cameras and motion sensors.

mobile patrols