Your rentals, in order. Your indexations, on time.

Properties, leases, tenants, documents and deadlines in one place — and rent indexation calculated from the official index of your country, with the letter ready to send.

Also on your smartphone: follow your rentals wherever you are

Start free for 30 days · Open the demo

Every property, lease and deadline in one place

See at a glance what is rented, to whom, for how much and until when. No more spreadsheets and folders to cross-check.

  • Rents and charges per property
  • Tenants and co-owners on each lease
  • Several portfolios, each with its own members

Never miss an indexation, never miscalculate one

Each lease anniversary becomes a task. The new rent is calculated from the official index of the property’s country — the health index published by Statbel in Belgium — with every figure shown, and the letter to your tenant is generated for you.

  • Upcoming, due, calculated, sent, applied: you always know where you are
  • The formula and the index values behind every amount
  • The rent history kept on the lease
  • Other countries too: Belgium’s monthly health index, the French IRL, Dutch, German, Italian and Spanish rules

Try the free rent indexation calculator

Lease contracts from your own template

Write your template once, with fields for the parties, the property and the rent. Each lease then produces its contract as a PDF, filled in and ready to sign.

  • Your wording, your clauses
  • Filled from the lease, the tenants and the property
  • An example template to adapt — not legal advice

Everything you know about each property

Energy certificate, meters, surface, cadastral income, purchase price and estimated value: the facts you look for at the worst moment, kept with the property.

  • EPC rating and expiry date
  • Purchase price against estimated value
  • Contractors and advisers linked to the property

Documents filed, expiries tracked

Leases, inventories, certificates, insurance and invoices are filed against the right property or lease. Expiry dates turn into reminders before they become problems.

  • Reminders for indexations, lease ends and certificates
  • Your own reminders for maintenance
  • Nothing lost in a mailbox

Publish a vacant property in one click

A vacant property gets its own public page, in six languages, found by search engines and AI assistants — and enquiries arrive straight to you, without an agency.

  • A public page per property, in English, French, Dutch, German, Spanish and Italian
  • Hide the exact address if you prefer
  • Enquiries by e-mail, directly to you

Try everything that matters, free

30 days free with one property: a card is asked for, but nothing is charged before the trial ends, and you can cancel until then. Then Premium, monthly or yearly — cancel any time, and your data is never deleted.

See pricing

StoffWare — Belgium — VAT BE 1040.174.154 · contact@stoffrent.com

Questions

Who is it for?

Private landlords and small portfolios, whether you rent out one flat or a few houses, alone or with co-owners. The app speaks French, Dutch, English, German, Spanish and Italian, and indexes rents by the rules of each property’s country.

How is the indexation calculated?

With the health index published by Statbel and the formula of the lease’s region. Every amount comes with the index values and the formula used, so you can check it before sending anything. Properties outside Belgium follow their own country’s rules: the IRL in France, the CPI in the Netherlands and Germany, ISTAT in Italy, the IPC capped by the IRAV in Spain.

Is the contract template legal advice?

No. It is a document tool: the shipped template is an example to adapt, and you remain responsible for the contracts you use.

Can several people work on the same portfolio?

Yes. With Premium you invite co-owners, an accountant or a manager, each with a role: read only, edit, or manage.

Which languages?

The application and the e-mails speak French, Dutch, English, German, Spanish and Italian, and example contract templates exist in each of them. The public site is in all six languages too; the legal documents are in French, Dutch and English.

What if I stop?

Nothing is deleted. Your portfolio becomes read-only: you can still read everything and pick up again by subscribing.