Vacant and void properties are one of the most overlooked security risks in the UK. Whether your property is sitting empty between tenants, awaiting redevelopment, or caught in a legal process, an unoccupied building is a prime target for thieves, vandals, squatters, arsonists, and fly-tippers.
At Guard Mark Security, we provide professional vacant property security services and void property protection across the entire UK. With over a decade of experience and more than 500 properties secured, our SIA-licenced officers, 24/7 CCTV monitoring, and scheduled inspection programmes give property owners, landlords, and developers complete peace of mind from day one.
One call is all it takes. Your empty property could be protected within 24 hours.
Unoccupied buildings face a unique set of risks that occupied properties simply do not. The moment a property becomes vacant, the threats begin:
The consequences of ignoring these risks can be devastating: costly repairs, delayed sales or developments, legal complications, and the loss of your insurance cover when you need it most.

Most UK insurance policies require vacant properties to be visited at least once a week. Failure to comply can invalidate your policy — meaning your insurer may refuse to cover losses caused by theft, vandalism, fire, or flood. Our scheduled inspection service keeps your property fully compliant, so your coverage remains intact.





Guard Mark Security provides vacant and void property security solutions for a wide range of property types across the UK, including:
Whether your property is a single vacant flat or a large multi-site commercial portfolio, we have the experience and resource to protect it.

We deliver a comprehensive range of empty property security solutions, fully tailored to the size, location, risk level, and insurance requirements of your property.
Our SIA-licensed security officers carry out regular inspections on agreed dates, tailored to your insurance requirements. During each visit, we conduct thorough checks of the interior and exterior, including all doors, windows, locks, and access points.
We check for signs of forced entry, water damage, damp, pest activity, and any maintenance issues that could escalate into a costly problem.
Inspection frequency can be set at daily, weekly, or bi-weekly intervals — whatever your insurer demands and your risk level requires.
Every visit includes a thorough inspection of both the interior and exterior of your property. Our team checks for signs of forced entry, broken locks, damaged windows, and any evidence of trespassing or vandalism on the outside.
Inside, we look for pest activity, water leaks, electrical issues, and any other risks that could compromise the safety or structural integrity of your property.

After every visit, you will receive a comprehensive written report within 24 hours. The report covers all areas inspected, any issues identified, their level of urgency, and recommended actions.
This gives you a clear and documented record of your property’s condition at all times — essential for insurance purposes and peace of mind.
Unauthorised use of gas, electricity, or water in vacant properties is more common than many owners realise. Our officers take meter readings during every visit and include them in your inspection report, so you can quickly identify any unexplained usage and take action before costs escalate.
Our SIA-licensed CCTV monitoring officers keep a watchful eye on your property around the clock. If a threat is detected — whether it’s a break-in, fire, gas leak, or any other emergency — our team responds immediately and alerts the appropriate emergency services to minimise risk and damage.
Guard Mark Security holds a secure set of keys to your property, enabling our team to carry out scheduled inspections and respond rapidly to emergencies — without you needing to be on-site. Our keyholding service also ensures your property remains compliant with insurance requirements and accessible to authorised personnel at all times.

No two properties are the same, which is why we don’t believe in one-size-fits-all solutions. Whether you have a single vacant unit or a large portfolio of properties across the UK, we will visit your site, assess your security needs, and build a package that works for you — from basic weekly inspection plans to full multi-site management with CCTV installation.
Our vacant and void property security services are trusted by a wide range of clients across the UK:
With over 10 years in the UK security industry and hundreds of properties protected, Guard Mark Security is a trusted name for vacant property owners, landlords, and developers. Here is what sets us apart:
Your property is in expert hands. We handle everything so you never have to worry about what’s happening on-site.
Our weekly visit schedule ensures your property meets insurer requirements, keeping your policy valid and your assets protected.
All our security officers are SIA-licenced and vetted in accordance with BS7858 standards — ensuring complete professionalism and trustworthiness.
Our round-the-clock CCTV monitoring team is always ready to act the moment a threat is identified.
Detailed inspection reports delivered within 24 hours, giving you a full picture of your property’s condition at all times.
Protecting your vacant property now costs far less than dealing with the aftermath of theft, vandalism, or a voided insurance claim.
We operate across the entire UK, making us the ideal partner for property owners and portfolio managers with multiple sites.
Protecting your property and giving you the peace of mind you deserve is our number one priority. At Guard Mark Security, we have built a strong reputation over the past 10 years by delivering reliable, professional, and fully compliant vacant property security services across the UK.
Don’t leave your vacant property to chance. Contact our expert team today to discuss your requirements and receive a free, no-obligation quote. Our customer support team is available 24/7, 365 days a year to help you find the right solution for your property.
Below are the most common questions our clients ask about vacant and void property security services in the UK.
Most UK insurers require vacant properties to be inspected at least once every seven days. Some policies may require more frequent visits depending on the property type and risk level.
Guard Mark Security can tailor your inspection schedule to meet your exact insurance requirements and provide written evidence of every visit.
The main risks to empty and unoccupied properties include theft (especially metal theft), vandalism, squatting, arson, fly-tipping, water damage from burst pipes or leaks, and insurance policy invalidation due to lack of inspection compliance.
Most vacant property insurance policies require proof of regular inspections — typically weekly. If you cannot demonstrate that inspections took place, your insurer may reject your claim.
Guard Mark Security provides detailed written reports after every visit, giving you full documentation for insurance purposes.
Yes. We work with individual property owners as well as large portfolio managers. Whether you have one vacant property or one hundred, we will build a security solution tailored specifically to your needs.
The terms are often used interchangeably. ‘Vacant property’ typically refers to any unoccupied building, while ‘void property’ is commonly used in the housing association and local authority sector to describe residential units that are empty between lettings. Guard Mark Security provides specialist security for both.
Squatting in commercial properties is not a criminal offence in England and Wales, meaning the police cannot assist with removal.
Property owners must obtain a court order to evict squatters, which is both time-consuming and expensive. Preventing access in the first place through regular security patrols and CCTV monitoring is far more cost-effective.
In most cases, we can begin securing your vacant or void property within 24 hours of your initial enquiry. Contact our team today for a free assessment and rapid deployment.
Guard Mark Security provides vacant property security services nationwide across the United Kingdom, including London, Manchester, Birmingham, Leeds, Glasgow, Edinburgh, Bristol, Cardiff, and all areas in between.
