An ecosystem for property owners and investors
Since 2011, we have supported property owners and investors with a simple approach: structure, optimise and steer every decision to maximise your results.
A property ecosystem, a single partner
J&J is far more than an estate agency. It is an integrated support service covering the entire life cycle of your properties — from acquisition to sale, including optimisation, rental and management. A single point of contact. Concrete results.
The desire to do things differently
If I were to tell the story of J&J, I would say it doesn't really begin in 2011. It begins much earlier… through house moves, homes under renovation, through this fascination for bricks and what spaces can become. And above all through human contact. The desire to understand, to support, to advise. Property presented itself as an obvious path.
Energy. A desire to do things right.
In 2011, whilst still on a work placement as part of my studies, I discovered a different vision of property: more structured, more institutional, more financial. And at the same time, an idea became increasingly clear: to create my own way of doing things. Not necessarily bigger. But more honest. A solid foundation that is still part of J&J's DNA today.
Building trust, one transaction at a time
The early days were simple. Intense too. Days spent prospecting, calling, convincing. I was doing everything myself. Managing marketing, sales, accounting, reporting, and so on.
The answer was often the same: "We'd rather work with an established agency." So we took our time. We perfected the photography, worked on the listings and brought a level of quality that was not yet the norm at the time. And we simply said: "Compare. Put yourself in a buyer's shoes. And choose." The clients who gave us a try stayed. And then recommended us. Even today, that remains one of our greatest sources of pride.
From agency to ecosystem
Very quickly, one thing became clear: our clients were not simply looking for an agency. They were looking for a partner. Someone capable of supporting them at every stage — not only to sell or let, but also to optimise, manage and structure. That is when J&J evolved. Every new service grew out of a genuine demand: rental management in 2016, virtual tours in 2017, support for the first investors in 2018. Not a growth strategy — a concrete response to what clients were experiencing.
A service company, above all
At J&J, there is a phrase that often comes up: "We are a service company." In a sector sometimes perceived as tough or opportunistic, we have always wanted to remain profoundly human. Amongst ourselves first. With our clients next. No hierarchy. No distance. Team members who have helped the company grow over the years. Loyal clients, some for more than 15 years. And essential supporters.
The same energy. A new chapter.
What is rather particular is that I never really felt that things were "taking off". I mostly felt that I loved what I was doing. And that has never changed. 15 years on, the passion is exactly the same. Honestly, I have never felt like I was working. Today, J&J is 15 team members, more than 650 properties under rental management, more than 250 families supported each year and more than 200 million euros of assets monitored daily. The objective has never changed: to remain the most fair. Not the biggest.
— John de Troyer, founder
The principles that guide every one of our actions
Exigence
We believe that quality is not optional.
Every detail matters: a file, a listing, a piece of advice.
We take our work seriously, with rigour, because our clients make important decisions — and deserve the highest level of support.
Commitment
We do what we say.
We take responsibility, from the first contact through to the final outcome.
Trust is built over time, through consistency, transparency and honouring our commitments.
Human
Property is, above all, about people.
We take the time to understand, to listen and to build a genuine relationship.
Because beyond the properties, it is life projects, personal journeys and important decisions that we are part of.
Team spirit
We move forward together.
Without ego, with mutual support and collective rigour.
We are convinced that the best results come from strong collaboration — internally with our colleagues and externally with our clients.
Clarity
We bring structure where there is complexity.
We help our clients step back, ask the right questions and make informed choices.
Because deciding consciously — anticipating — is always more powerful than reacting.
The team by your side
Julie Hatert
HR & Accounting
Marie Van Rymenant
Real Estate Agent
Caroline Clarot
Head of J&J Management
Manoelle Van Boeckel
Property Manager
Vincent Annez de Taboada
Property Manager
Valérie Hannecart
Head of The Syndic
Olivia Karolczuk
Buildings Management Assistant
Would you like to join us?
We are building a property ecosystem designed to better support owners and investors.
And we are looking for talented people who want to contribute to it.