Outbuildings security
Thefts from gardens and outbuildings has been on the rise in recent years. Which? reported that between 2012-14, 342 laptops, 387 computers and 447 phones were stolen from sheds in the London area alone. (Ref. https://conversation.which.co.uk/home-energy/shed-theft-home-insurance-valuables/)
An outbuilding can be a greenhouse, garden shed, workshop, and so on. They should all be made as secure as possible to protect from crime. Being a victim of crime can be made worse by being subject to higher insurance premiums. If correct security measures are in place, property owners can benefit from around 5% reduction in premiums.
Some measures to improve security for outbuilding entrances and property boundaries include:
- Regularly checking for damage and repairing it as soon as possible.
- Installing an alarm.
- Installing a CCTV system.
- Installing external doors with a minimum thickness of 44 mm, with securely-fixed frames.
- Ensuring the boundary is of an effective height to be secure, e.g. around 2 m high.
- Increasing fence security with anti-climb paint or 'prickler' strips along the top (these measures will require a warning sign to be visible).
- Gravel driveways and/or a driveway alarm.
- Motion sensor lights on a driveway.
- Filling gaps or extraneous access points with planted trees, a bollard or some other means of blocking.
- Tall hedges can enhance privacy, but in front gardens they can help to make intruders less visible from the street.
- Prickly plants under ground floor windows can act as a deterrent.
Some measures to improve security for outbuilding doors and windows include:
- Securely locking doors with strong padlocks (with Kitemark).
- Securing door hinges with coach bolts or non-returnable screws.
- Ensuring that exterior hinges are inaccessible from outside.
- Perspex or polycarbonate can be used as a more secure alternative material for windows.
- Net curtains or coloured film can prevent a clear view inside.
- Checking regularly for wear and tear. Replace rotten timber doors or window frames.
- If possible, consider using a mortised deadlock midway on the door, with a latch lock above it.
[edit] Related articles on Designing Buildings Wiki
- Commercial security systems.
- Electric lock.
- Embedded security: Procuring an effective facility protective security system.
- Entry control.
- Home security solutions market.
- Hostile architecture.
- How to install an underfloor safe.
- Outbuildings.
- Perimeter security.
- Security and the built environment.
- Security glazing.
- Types of lock.
[edit] External resources
Featured articles and news
Apprenticeships and the responsibility we share
Perspectives from the CIOB President as National Apprentice Week comes to a close.
The first line of defence against rain, wind and snow.
Building Safety recap January, 2026
What we missed at the end of last year, and at the start of this...
National Apprenticeship Week 2026, 9-15 Feb
Shining a light on the positive impacts for businesses, their apprentices and the wider economy alike.
Applications and benefits of acoustic flooring
From commercial to retail.
From solid to sprung and ribbed to raised.
Strengthening industry collaboration in Hong Kong
Hong Kong Institute of Construction and The Chartered Institute of Building sign Memorandum of Understanding.
A detailed description from the experts at Cornish Lime.
IHBC planning for growth with corporate plan development
Grow with the Institute by volunteering and CP25 consultation.
Connecting ambition and action for designers and specifiers.
Electrical skills gap deepens as apprenticeship starts fall despite surging demand says ECA.
Built environment bodies deepen joint action on EDI
B.E.Inclusive initiative agree next phase of joint equity, diversity and inclusion (EDI) action plan.
Recognising culture as key to sustainable economic growth
Creative UK Provocation paper: Culture as Growth Infrastructure.
Futurebuild and UK Construction Week London Unite
Creating the UK’s Built Environment Super Event and over 25 other key partnerships.
Welsh and Scottish 2026 elections
Manifestos for the built environment for upcoming same May day elections.
Advancing BIM education with a competency framework
“We don’t need people who can just draw in 3D. We need people who can think in data.”





















