Contractor Access: How to Secure Your Building During Maintenance and Fit-Out Works

Maintenance projects, refurbishments and fit-out works are a normal part of managing commercial premises. Whether you’re upgrading an office, carrying out essential repairs or preparing a new workspace, contractors often need temporary access to areas that would usually be restricted.

The challenge is that every additional person on site creates another potential security risk. Keys change hands, access permissions are expanded and valuable assets may be exposed while work is underway.

In this article, we explore the practical steps facilities managers and property teams can take to maintain security throughout maintenance and fit-out projects.

Managing temporary access without losing control

Maintenance projects often involve multiple contractors working across different areas of a building.

Electricians, decorators, flooring specialists, IT engineers and delivery teams may all require access at different times, sometimes outside normal business hours.

Without clear controls, access arrangements can quickly become difficult to manage. Physical keys may be shared between contractors, alarm codes passed around informally, or access permissions extended beyond what is actually required.

A structured approach helps maintain security while allowing work to proceed efficiently.

Action point – access control essentials:

• Maintain a register of all contractors and authorised personnel
• Issue access only to the areas required for the work being undertaken
• Use temporary digital credentials or smartphone-based access where possible
• Avoid sharing permanent alarm codes
• Remove or deactivate access permissions as soon as work is completed

By keeping tight control over access, you can significantly reduce the risk of unauthorised entry during a project.

Protecting sensitive and restricted areas

Contractors rarely need unrestricted access to an entire building. However, during busy projects it can be easy for boundaries to become blurred, particularly when multiple teams are working simultaneously.

Areas such as server rooms, stock rooms, records storage areas, finance departments and clinical spaces often contain valuable equipment or confidential information that should remain protected throughout the project.

Even trusted contractors should only be given access to the areas necessary for their work.

Action point – areas to secure:

• Server and communications rooms
• Stock rooms and storage areas
• Finance and HR departments
• Records archives and filing rooms
• Clinical or restricted operational spaces

Consider using electronic access control to restrict and track entry, escorting contractors where appropriate, and ensuring sensitive areas remain locked when not in use.

Taking these precautions helps protect both physical assets and confidential information.

Managing out-of-hours working safely

Many maintenance projects take place outside normal business hours to minimise disruption to staff, visitors and day-to-day operations.

While practical, out-of-hours working can introduce additional security challenges. There may be fewer people on site to supervise activity, and contractors may be working in parts of the building that are usually empty.

Clear procedures help ensure security standards remain consistent regardless of the time of day.

Action point – out-of-hours security measures:

• Keep a schedule of authorised contractors and working hours
• Record arrivals and departures
• Maintain clear communication procedures
• Ensure alarm monitoring remains active where possible
• Use CCTV to monitor activity in key areas

These measures help create accountability and provide reassurance that work is being carried out as expected.

Using temporary security measures during works

Building projects can temporarily alter the security profile of a property. Scaffolding may provide easier access to upper floors, doors may be removed, and temporary partitions can create new blind spots.

In these situations, temporary security measures can provide valuable protection until permanent arrangements are restored.

Action point – temporary security solutions:

• Temporary CCTV coverage
• Monitored intruder alarms
• Additional security lighting
• Temporary access control points
• Security patrols where appropriate

Visible security measures can also act as a deterrent, reducing the likelihood of opportunistic theft or unauthorised access.

The goal is to ensure that security remains effective, even when the building is undergoing significant change.

A maintenance project is the perfect time to improve security

While maintenance and fit-out works can create disruption, they also provide an excellent opportunity to review and upgrade existing security arrangements.

Rather than simply reinstating outdated systems once the work is complete, consider using the project as a chance to improve protection and future-proof the building.

Action point – improvements worth considering:

• Modern access control systems
• Smartphone credentials and biometric access
• Digital visitor management systems
• Monitored intruder alarms
• Integrated CCTV and security lighting
• Staff duress alarms and panic buttons where appropriate

Incorporating security into the fit-out process is often more cost-effective than retrofitting systems later and helps ensure the building is protected from day one.

Keep your building secure during maintenance and fit-out works with Barry Bros Security

Maintenance and refurbishment projects can introduce temporary vulnerabilities, but they also provide an opportunity to improve the way your building is protected.

With careful planning, controlled access and the right temporary security measures in place, you can keep people, assets and sensitive information secure throughout the project.

Barry Bros Security can help you manage contractor access and recommend tailored solutions for both temporary and long-term protection.

Get in touch to arrange a consultation, or visit our London showroom for expert advice on securing your premises during maintenance and fit-out works.