Capstone Box

A New Generation of Self-Storage, Built for Digital Access

Capstone Box operates self-storage centres in France, in Saint-Apollinaire near Dijon, Saint-André-lez-Lille near Lille, and Chelles in the Paris region, serving individuals and businesses storing everything from furniture and archives to professional stock and equipment.

Self-storage often enters people’s lives at already stressful moments: a move, renovations, a business reorganising its stock. In those situations, the experience needs to remove complexity, not add to it. Capstone Box built its centres around a modern model rather than a traditional lock-and-key operation, one where customers book online, access their unit effortlessly and trust that their belongings are protected. That ambition is what drove the digitalisation of its centres, with Sensorberg as the access partner.

Digital by Design, Not by Upgrade

For Capstone Box, digitalisation was never a future add-on. It sits at the core of the operating model. Today’s customers expect to book online, get clear information and reach their unit without paperwork, appointments or unnecessary delays, while the centre itself still needs to stay secure and professionally run. Digital access delivers both: autonomy for the customer and precise control for the operator.

Rather than physical keys and manual access management, Capstone Box grants controlled access through a smartphone or a personal code, a model that matters even more for a multi-site operator. Across its three regions, every centre needs to offer the same level of reliability, security and simplicity, which calls for systems that are scalable and consistent. Digital access sharpens the customer journey, strengthens security and frees the team from repetitive tasks to focus on service.

Why Capstone Box Chose Sensorberg

Capstone Box needed more than a technology provider. It needed a solution robust enough to support high standards of security, reliability, simplicity and professionalism. Sensorberg stood out with a solution built specifically for the real estate and self-storage sectors, where access is never a secondary feature. It sits at the heart of the user experience: if access is complicated or unreliable, the whole service suffers.

“The best technology is the kind that disappears. The customer opens their unit with total ease, while we keep full control over the operation behind the scenes. Sensorberg gave us the confidence to strike that balance between convenience and control.”

— Frédéric Stell, Project Manager, Capstone Box

Scalability weighed heavily in the decision too. The infrastructure needed to grow with the business, deploy consistently across every site, and still adapt to each centre’s specifics. Sensorberg gave Capstone Box a solid foundation to support that growth.

What Changes On the Ground

Sensorberg has a direct, daily impact on how Capstone Box runs its centres. The most visible benefit is access management: digital access removes the friction of physical keys — handovers, replacements, lost keys, manual checks and constant coordination. Access rights update instantly, and the experience is smoother for customers and staff alike.

One feature has proven especially valuable: access sharing. Many tenants need to give a trusted third party access to their unit — a family member, an employee, a mover, a contractor or a business partner — particularly useful during a move, renovations or business operations where several people need coordinated access at different times. With Sensorberg, access sharing is controlled and professional: simpler for the customer, secure for the operator.

For Capstone Box’s teams, this shifts the nature of the work itself. Instead of repetitive access tasks, staff focus on higher-value work: helping customers pick the right unit size, maintaining site quality and supporting business customers with specific needs. It also keeps the experience consistent across sites — whether a customer is near Dijon, near Lille or in the Paris region, the promise is the same: secure, convenient, easy-to-understand storage.

A Customer Experience Built on Trust

Self-storage is fundamentally a trust-based service. People store belongings that matter to them, and they want both security and simplicity. Digital access delivers exactly that: customers reach their space easily, without managing physical keys, and value practical features like access sharing when real life demands it.

That reassurance shows up in the numbers. Capstone Box holds a 4.8/5 rating with more than 97% positive reviews. Customers consistently point to the same things: a warm welcome, simple and secure access, fair and transparent pricing with no admin or cancellation fees, and the peace of mind of an on-site caretaker, 24/7 video surveillance and secure individual access.

“The peace of mind it brought me was priceless.”

— Capstone Box customer, after storing during renovations

Capstone Box in Numbers

A True Partnership, and What’s Next

The experience confirmed Capstone Box’s choice. Beyond the technology itself, the Sensorberg team has been responsive, attentive to operational needs and genuinely constructive. The relationship reads more like a partnership than a client-vendor arrangement, which matters when access is this central to the customer experience.

The market is moving fast: customers expect a higher level of service, more autonomy, flexibility and transparency, while operators need efficient systems that support growth without sacrificing quality.

“The future of self-storage rests on three pillars: security, simplicity and digital convenience. Sensorberg is helping us bring that vision to life.”

— Naouel Hammoudi, General Manager, Capstone Box

With that foundation in place, Capstone Box continues building a new generation of self-storage in France, designed for individuals and businesses who want storage that is simple, secure and stress-free.

• Visit Capstone Box: capstonebox.com