
Rental property management software: KernImmo
KernImmo is the rental property management software built by KERN-IT: buildings, units, leases, rents, deposits and tickets in a single platform, with a portal for your tenants. Paid monthly, all inclusive, with no upfront investment: that is our leasing formula. And if you prefer it to carry your colours instead of ours, it comes as white label.
It is one of our business platforms: complete software, platforms designed, hosted and maintained by our team in Brussels. Built for private landlords, real estate professionals and managers who still track their rents in a spreadsheet.
A built-in AI assistant answers your operational questions from your data, read-only: portfolio summary, unpaid rents, leases expiring soon, open tickets.

Your rental portfolio under control
Buildings & units
Structure your assets: buildings, units, surfaces, equipment. Every property has its record, documents and rental history.
Leases & indexations
Long and short term leases, tracked end dates and terminations, possible indexations flagged automatically. The lease drives the rent, not the other way round.
Rents & payments
Rents due, payments received, arrears highlighted and reminders to tenants. The collection rate reads at a glance.
Rental deposits
Deposit constitution and follow-up, partial payments included. You know at any time what is covered and what is missing.
And everything around the tenancy
Applications
Candidates apply online for your available units; you compare files and turn the selected application into a lease.
Tickets & maintenance
Your tenants report an issue from their portal; you qualify, track and close every intervention with its history.
Documents & team
Leases, inventories, letters: every document is attached to the property or the lease, and your team works on the same file.
A glimpse of the platform
In practice, a day with KernImmo looks like this: a rent is marked paid, an arrear turns red and the reminder goes out to the tenant. A tenant reports a leak from their portal, the ticket is qualified and tracked to closure. The dashboard flags two possible indexations and an incomplete deposit: you act before it costs you.
The landlord dashboard: the state of your portfolio at a glance, from rents to deposits.
- Overdue rents quantified, reminders in one click
- Monthly and yearly revenue, collection rate
- Occupancy per building and active leases
- Possible indexations, expiring leases, recent tickets


Your leases, filterable by building, status or payment: tenant, unit, rent and any arrears on each line.
- Long and short term leases, active or ended
- Arrears highlighted line by line
- Search by tenant, unit or building
- New lease in a few clicks
The tenant portal: every tenant finds their home, lease and payments in a clear space.
- Rent, lease duration and home details
- Payment history, due dates included
- Requests and tickets tracked online
- Lease documents available at any time

The landlord's spreadsheet vs your digital core
Before
- Rents ticked off by hand in a spreadsheet
- Indexations forgotten, deposits never claimed
- Tenant requests lost in text messages
- Documents scattered between inbox and binders
After
- Arrears and indexations surface on their own
- Every deposit tracked to the last euro
- Every request becomes a traced ticket
- Every document attached to the property or lease
Who is it for?
Private landlords
A few units or a few buildings: the platform does the work of a property manager, your assets stay under your control.
Property management professionals
Agencies and managers: multiple buildings, a team, applications and a tenant portal under your brand.
Investors & real estate companies
The portfolio is steered by numbers: revenue, collection, occupancy, deadlines. Like coliving and smartliving, which we already equip.
Designed and supported in Belgium by the KERN-IT team, hosted in Europe. Your data is yours: exportable at any time, guaranteed reversibility, GDPR by design.
Support is local too: you talk to the people who build the platform, not to an anonymous call centre. An issue reported in the morning is often fixed the same day, and your feature requests feed directly into the product roadmap.
How does it work? Made-to-measure software
Generic SaaS tools are frustrating: you end up juggling a dozen of them to cover your business, and none quite fits. Full custom development costs a lot and takes months. Our business platforms are made-to-measure: a proven base, adjusted precisely to your operation.
1. A base already tailored
KernImmo exists and already runs: buildings, leases, rents, deposits, tenant portal. The core of the business is built and proven in production, and you do not fund its development.
2. Adjusted to your operation
Your lease templates, your indexations, your bank reconciliation, your accounting integrations: from configuration to modules custom-built by the team behind the software. Up to white label if you wish: your colours, your logo, your domain, tenant portal included.
3. Paid monthly, all inclusive
Hosting, backups, updates and support included. The monthly fee is set by two dials: how much custom work you want, and how fast you want to move. It includes a yearly reserve of development days, and a purchase option can be written into the contract, like a real leasing.
Your onboarding
1. Personalised demo
A demonstration on your reality: your buildings, your leases, your tracking habits.
2. Configuration & branding
Setup of your buildings, units and document templates. White label: your visual identity and your domain.
3. Data migration
Import of your properties, leases, tenants and rent history from your spreadsheets. You start with a portfolio already in order.
4. Launch & support
Training, tenant portal opening, ongoing support. The platform evolves with your feedback.
Frequently asked questions
Our business platforms are complete software products developed and operated by KERN-IT, each ready to use for a given sector. KernImmo for rental management, CoworkCore for coworking, FacilityCore for facility management. Mature products, without funding their development, and customisable because we master all of their code. It is made-to-measure software: a proven base, adjusted to your operation, instead of a dozen generic tools or a full build to fund.
KernImmo works as an all-inclusive monthly subscription, with no upfront investment: like a leasing, the monthly fee covers full use of the platform, and a purchase option can be included. It is set by two dials: how much custom work you want, and how fast you want to move, with a yearly reserve of development days included. It replaces several licences, hosting and management time. We present a costed proposal during the demo.
The monthly fee is not money down the drain: it covers full use of an operated platform (hosting, support, evolutions) and the development days that move it forward. A purchase option can be written into the contract: after an agreed period, you buy your platform and switch to a simple maintenance contract. And at any time, your data can be exported in open formats.
White label means the platform carries your brand instead of ours, up to offering it as your own product. Logo, colours, domain name, document and email templates: the entire interface, tenant portal included, carries your brand. KERN-IT appears nowhere if you prefer.
Yes. We import your buildings, units, leases, tenants and rent history from your Excel files or previous software. Data migration is part of the onboarding.
On servers in Europe, GDPR compliant. Daily backups, encrypted exchanges, audit log. Dedicated hosting is available for organisations that require it.
The commitment stays flexible: the plan is sized and terminated under clear conditions, presented during the demo. If you stop, you get all of your data back in open formats: reversibility is part of the contract.
See KernImmo in action
Show us your portfolio: buildings, leases, tracking habits. We show you the platform that runs it daily.

