An empty building is not neutral. It is a running cost. Business rates continue whether anyone is inside or not. After three months of vacancy, a commercial property attracts full rates with no relief. On a large building in London, that liability alone can run to thirty, fifty, or over a hundred thousand a year depending on rateable value. That is dead cost on a property generating no income and no return.

Insurance premiums rise the longer a property sits vacant. Insurers treat unoccupied commercial buildings as higher risk because they are. No daily presence means no early detection of water ingress, no one to notice electrical faults, no one to report forced entry. Policies for vacant properties carry higher premiums, higher excesses, and more exclusions. Some insurers refuse cover altogether after a certain vacancy period.

Deterioration accelerates without daily occupation. A leak in an occupied building is noticed the day it starts. A leak in an empty building runs for weeks or months before anyone discovers it. By then the damage is structural: saturated plasterwork, rotting joists, mould throughout, collapsed ceilings. The repair bill for undetected water damage routinely reaches five figures. Damp, condensation, vermin, vandalism, and simple neglect compound every month the property stands empty. The building loses value faster than any market movement could account for.

Squatters know which buildings are empty. They look for the signs: no lights, no movement, post piling up, overgrown access, boarded windows that nobody checks. Once inside a commercial building, a squatter is committing trespass, which is a civil matter. The owner must go to court, obtain an interim possession order or a claim for possession, wait for a hearing, and pay legal fees to recover his own property. That process takes weeks at best, months in difficult cases. Meanwhile the squatter is inside the building, potentially causing damage, changing locks, and establishing a presence that becomes harder to remove the longer it continues.

Vandals and metal thieves operate on the same intelligence. Copper piping, lead flashing, cable, boilers, radiators, anything with scrap value disappears from unwatched buildings. The theft itself is often less expensive than the consequential damage: flooded floors from stripped pipes, electrical systems destroyed, heating systems rendered unserviceable.

The conventional alternative is SIA security. A single guard, 24 hours a day, 7 days a week, at a standard hourly rate of seventeen pounds, costs over twelve thousand a month. That is nearly one hundred and fifty thousand a year for one property. The guard watches a door. He does not change the de facto status (de facto status has nothing to do with planning, change of use, etc, is just a fact, but this changes a lot) of the building from commercial to residential setup. He does not maintain the fabric. He does not report on condition, check for leaks, monitor heating, or notice deterioration. He does not deter squatters through residential occupation. He stands outside a commercial property where squatting remains a civil matter, and if someone enters through another access point while the guard is at the front, the legal position is exactly the same as if the guard were not there at all.

There is a better structure. One that protects the building through managed Trained Licensees, converts the squatting question from civil to criminal, maintains the property through daily use, catches deterioration before it becomes damage, and costs the owner little compared with alternatives.