
You invest. We manage.
Your portfolio deserves more than simple management.
Since 2011, J&J has been simplifying life for property owners and optimising their property portfolios.
The rental management service by J&J
Would you like to hand over the management of your property in Brussels or Walloon Brabant? We manage your property with rigour and transparency.
What you get
An integrated service that secures your property, simplifies your day-to-day life and maximises your rental income.

A proactive point of contact and personalised support at every stage
More than 700 properties managed in Brussels and Walloon Brabant. We know your market inside out
Tenant sourcing, administration, technical monitoring, accounting and legal support
We anticipate problems before they impact your property or your rental income

How does rental management work with J&J?
Onboarding
We analyse your personal situation, your property and your objectives in order to put in place a clear and structured rental management plan.
This stage includes taking over administrative and technical information, verifying legal obligations, signing the mandate and coordinating with the existing tenant or preparing for the rental.

Day-to-day management
J&J handles the day-to-day management of your property and the relationship with tenants. We take care of rent and invoice monitoring, any reminders and rent indexations, tenant requests, administrative follow-up and coordination of technical interventions.
You also benefit from access to your My J&J portal to consult your documents, finances and management history.

Rental continuity
When a tenant leaves, we plan ahead for re-letting the property to avoid vacancy periods. Our rental team, which completes more than 200 rentals every year, takes care of finding a reliable new tenant.





Choose J&J if you need:
More time
Focus on your projects — we handle the day-to-day.
Greater peace of mind
A dedicated team watches over your portfolio.
Greater security
Rents monitored with rigour. Payment tracking, reminders, proactive management of arrears and support in the event of difficulty.
Greater value
A well-maintained property retains its appeal! We coordinate technical interventions and ensure the upkeep of your investment.
Fewer risks
Support in compliance with legal obligations. Regulations evolve. Leases, indexations, legal obligations and administrative formalities are all handled by our teams.
Greater visibility
All information centralised in your 'My J&J' portal. Through your My J&J owner space, you monitor your property with complete transparency.

Would you like to know if J&J is the right partner for you?
Let's talk! Book an appointment for a no-obligation initial conversation to understand your needs and present our approach.
The investor cycle
Invest
Search, identify and acquire the best opportunities
For whom
Investors, entrepreneurs and wealth-minded profiles who wish to grow their property portfolio without managing the operational complexity.
Our promise
Build a coherent and high-performing property investment strategy across the entire property cycle.
In practice
Targeted search, financial analysis, project structuring, acquisition support, value enhancement and integrated exit strategy.
Optimise
Maximise the value of your property
For whom
Owners and investors who wish to audit, improve the performance, value or clarity of their existing portfolio.
Our promise
Unlock the full potential of your property portfolio.
In practice
Global audit of your property portfolio, strategic recommendations, rental optimisation, renovation plan, restructuring or repositioning of assets.
Rent
Find the best tenants
For whom
Owners wishing to let quickly and efficiently whilst securing an optimal rental income.
Our promise
Maximise and secure your rental income.
In practice
Rental valuation, property presentation, targeted marketing, rigorous tenant selection and lease management.
Manage
Simplify day-to-day management
For whom
Owners who wish to hand over the day-to-day management of their properties with complete confidence.
Our promise
Serene, transparent and professional management.
In practice
Administrative, financial and technical management. Tenant monitoring, coordination of interventions and clear reporting.
Sell
Achieve the best return on your investment
For whom
Owners and investors looking to arbitrate, dispose of or restructure their portfolio.
Our promise
Sell at the right time, with a clear and well-considered strategy.
In practice
Timing analysis, property valuation, sales strategy, and support through to and after the signing of the deed.
People at the heart of J&J
What our clients say about us
Our managed properties
Explore our guides and tools

Value your property
Discover the value of your property in just a few clicks
Browse the most frequently asked questions.
Our fees depend on the level of service chosen and the number of properties under management. We offer flexible packages tailored to each landlord's needs, ranging from administrative support to comprehensive management including technical and financial oversight. On our 'Rental Management' page you will find a simulator that allows you to calculate the cost of our rental management service. You will find it here: LINK
Yes. Whether you own a single flat, several properties or a full property portfolio, we tailor our support to your situation. Our packages are designed to grow with your portfolio and allow you to centralise all your rental management with a single partner.
A rental management service takes care of all the administrative, financial and technical procedures relating to your property. At J&J Management, we handle in particular rent collection and indexation, tenant relations, coordination of technical works, property inspections and comprehensive administrative follow-up. Our aim is to allow you to enjoy your investment without the day-to-day hassle.
You retain control over important decisions. For routine works, we handle the follow-up directly. For expenditure exceeding a certain amount or requiring a decision, we seek your approval before any intervention. We define this threshold together at the outset of the contract.
Tenant selection is one of the most important stages of a successful rental. We analyse applications, verify the solvency and reliability of candidates, conduct interviews and present only those profiles that meet our selection criteria. The final choice always rests with you.
You receive a detailed monthly report and have permanent access to your My J&J area. You remain informed without having to manage day-to-day matters yourself. Of course, your dedicated property manager is also available by email or telephone to answer any questions you may have.
J&J Management operates primarily in Brussels, Brabant Wallon and the Brussels periphery. Thanks to our in-depth knowledge of these markets, we support both flat owners and investors holding investment buildings or property portfolios.
No. Our mission is precisely to free you from the constraints associated with your property investment. We manage tenant requests, administrative matters, technical works and financial follow-up. You are of course kept informed of important decisions, but without having to handle day-to-day matters.
In most cases, yes. Professional management helps to reduce vacancy periods, secure payments, optimise rental income and preserve the long-term value of the property. It also saves the landlord a considerable amount of time and helps to avoid numerous administrative or legal errors.
Through our J&J Properties brokerage service, we implement a professional marketing strategy for your property: quality photographs, virtual tours, targeted distribution and rigorous selection of prospective tenants. Our objective is to rent your property quickly whilst prioritising reliable and solvent tenants. Our rental service completes more than 200 rentals every year — we therefore have all the expertise needed to support you in this mission.
Yes. We coordinate technical works, manage claims with insurers, organise repairs and oversee works required to maintain your property in good condition. We also carry out periodic inspections to verify its state of upkeep.
Yes. We support you through the management transfer so as to retrieve the documents, tenancy information and administrative records required. Our objective is to ensure a straightforward and uninterrupted transition for both you and your tenants.
Managing a property requires time, a thorough knowledge of the rental market and ongoing monitoring of current regulations. By entrusting your property to J&J Management, you benefit from a specialist team that secures your rental income, coordinates technical works and ensures the administrative and legal follow-up of your portfolio.
Yes. It is not necessary for your property to be vacant before commencing rental management. We can take over the management of an existing lease, retrieve the necessary documents and ensure a smooth transition with the tenant already in place.
Our mission covers the full management of your property: rent collection and indexation, tenant relations, coordination of technical works, administrative management, landlord reporting and legal support.
We organise the exit inspection, assess any tenancy damage, coordinate the necessary repairs and immediately prepare the property for re-letting in order to minimise vacancy as much as possible.
We apply a rigorous monitoring procedure from the very first missed payment. This includes progressive reminders, a formal notice issued through our legal adviser and, if necessary, support through legal proceedings. Our priority is to protect your rental income whilst favouring amicable solutions wherever possible.
Yes. You have secure access to the My J&J platform, available 24/7. There you will find all documents relating to your property, leases, rents received, expenditure incurred and the corresponding invoices. A management report is also sent to you every month.
Absolutely not. You remain the decision-maker on all important matters concerning your assets. Our role is to advise you, represent you and make your life easier. Thanks to your My J&J access, your monthly report and your dedicated contact, you retain a complete overview of your property's situation at all times.
Since 2016, J&J Management has been supporting property owners in Brussels and Brabant Wallon in the day-to-day management of their property portfolios. We handle the administrative, technical, financial and legal aspects so as to save you time and secure your investment.


















