You no longer lose a year by forgetting
The regulatory calendar shows the anniversary date AND the limitation date of the same tenancy. The review stops being something you remember and becomes something you see coming.
Deadlines and compliance
The rent review, calculated — and refused when the law forbids it.
Indexing a rent comes down to a multiplication. Knowing whether you are entitled to it this year, on this tenancy, with this index, comes down to four rules that almost nobody puts together. Pilot reads them all before proposing a figure — and stays silent, citing its text, when one of them stands in the way.
- 8types of tenancy agreement whose indexation regime is determinedpilot/services/revision_regles.py::_REGIMES_PAR_TYPE
- 4possible verdicts, each with its reasonspilot/services/revision_loyer.py (allowed, not yet due, frozen, time-barred)
A review not requested within the year is lost for that year.
The review is not retroactive and it becomes time-barred. A landlord who notices in the spring has lost the previous year’s increase, for good — and will lose it again the following year, because nothing in their binder will remind them of the date. Conversely, a landlord who indexes a home rated F or G notifies a void increase: they think they have acted, they have written a letter with no effect, and they will find out at the first dispute, when they are told that the rent due never moved. The two mistakes mirror each other and cost the same: a year’s rent.
- The date your right lapses, displayed before it lapses
- The reference quarter read from THE TENANCY AGREEMENT, not inferred from today’s date
- The reason for refusal, with its article, when the review is impossible
- The notification letter pre-filled, amount rebuilt
In practice.
Pilot first reads the TYPE of tenancy agreement
Unfurnished, furnished, student, house-share: IRL regime. Bail mobilité and seasonal: no periodic review; the very notion makes no sense for a non-renewable, fixed-rent contract. Commercial and professional: other indices, other mechanics. This reading comes before any calculation — it decides whether a calculation is even allowed.
It checks the EPC
A home with an EPC rating of F or G can no longer have its rent reviewed. Pilot stops here, before even looking at the index: an absolute freeze is not up for discussion in light of the market, and suggesting a figure would mean suggesting a letter with no effect.
It checks for time-barring
The review must be requested within a year of its effective date. Pilot calculates the date the right lapses and displays it BEFORE, not after. A time bar flagged after the event is no longer information, it is a record of loss.
It fetches the IRL from INSEE
Through the public data feed, for the reference quarter written into the tenancy agreement — not the current quarter. The reference quarter is set by the agreement and never moves: only the year moves forward. A fallback table covers corrected values, so that a past calculation does not change its result after an index revision.
It rebuilds the amount, instalment by instalment
New rent excluding charges, monthly difference, annual difference, effective date. The notification letter is pre-filled with these values and the legal basis cited, and the payment schedule updates on the effective date — not immediately.
What it changes
The reference quarter no longer drifts
It is the most discreet mistake in the subject: recalculating the quarter from the review date rather than from the tenancy agreement shifts the base from one year to the next. The gap is small in the first year and impossible to recover by the fifth, because it compounds.
A refusal that cites its legal text is actionable
When Pilot says no, it says on what grounds. You know whether the block can be lifted — a time bar cannot, an energy rating can, by renovating — instead of reading it as a malfunction.
The notification goes out with the right amount
Rebuilt from the payment schedule, not re-entered. A wrong amount in the notification is grounds for dispute handed to the tenant.
The law, and the pitfalls
The review must be requested within one year of its effective date; failing that, it is lost for that year.
art. 17-1, I of Law No. 89-462 of 6 July 1989
The period runs from the effective date set in the tenancy agreement, not from the date you think of it. A retroactive adjustment over several years does not exist: each year not requested is permanently the tenant’s gain.
The rent of a home rated F or G can no longer be increased, whether at the annual review, at renewal or on re-letting.
art. 159 of Law No. 2021-1104 of 22 August 2021 (Climat et résilience), in force since 24 August 2022
The freeze is absolute and does not depend on any clause of the tenancy agreement: a tenancy on an EPC-rated G home with no review date remains frozen. Notifying an increase anyway does not make it due — the rent payable remains the old one, and any overpayment is refundable.
The reference quarter of the rent reference index (IRL) is the one written into the contract. Only the year moves on.
art. 17-1, I para. 1 of Law No. 89-462
Deriving the quarter from the review date rather than from the tenancy agreement changes the calculation base from one year to the next. The gap is small in the first year and then compounds: after five years, the rent no longer matches any identifiable rule.
A commercial lease is not reviewed on the IRL but on the commercial rents index or the office activities rents index, following a three-yearly mechanism.
art. L. 145-38 of the French Commercial Code
A landlord who notifies an IRL review on a commercial lease believes they have acted and has done nothing enforceable. Nor does the one-year time bar of art. 17-1 concern them: so they believe they are under pressure from a deadline that does not apply to them.
What Pilot refuses to do
Pilot does not apply the IRL to a commercial or professional lease
It applies the lease’s index — ILC, ILAT, or ICC for an older clause — with the three-year rule of the commercial lease. When a sliding-scale clause moves the rent by more than a quarter, it flags it without deciding: that is for the commercial rent judge.
art. L. 145-38 and L. 145-39 of the Commercial Code
Pilot never suggests an increase the law denies you
Even when the market rent would amply justify it. The “What you can apply today” page explicitly separates the two questions, because confusing them produces a recommendation that is economically logical and legally impossible.
Pilot does not index anything outside France
Foreign indices cannot be derived from the IRL. The engine names the expected index and refuses: a refusal that says what to go and find is better than a transposed figure.
Availability
Included from the Essentiel tier.
- 7-day trial at launch, card required
- No commitment
Frequently asked questions
What happens if I forgot the review last year?
It is lost for that year: Article 17-1 does not allow it to be recovered retroactively. Pilot tells you the next effective date and the date on which that new right will lapse in turn.
My home has an EPC rating of F. Can I increase the rent when re-letting?
No. The freeze under article 159 of the loi Climat et résilience covers the annual review, renewal and re-letting. Pilot flags it with the EPC rating that triggers it, and refuses to suggest an amount.
Does Pilot send the notification for me?
No. Pilot generates the pre-filled letter and files it in the tenancy file; sending it remains your responsibility. Automatic sending by registered post does not exist with us yet, and we would rather write that than let you discover it.
Where does the index come from?
From INSEE’s public data feed, for the reference quarter written into the tenancy agreement. A fallback table covers corrected quarters, so that a past calculation does not change its result after an index revision.
And if my lease is a commercial lease?
Pilot indexes it on your lease’s index — ILC or ILAT, and the ICC if it appears in an older clause — fetched from INSEE. The three-year review under article L. 145-38 of the Commercial Code is calculated; a gap of more than a quarter caused by a sliding-scale clause is flagged, not decided. A professional lease follows only the indexation clause of its contract.
Right next to it.
The rent
The market says one figure. The law says another.
Whether a review is available or not, the date of the next one, the constraints detected with their legal grounds, and what becomes possible on re-letting. It is the distinction missing everywhere else.
Deadlines and compliance
The legal cap, at the right granularity — or a refusal to conclude.
Eight municipalities and inter-municipal authorities, at district × period × rooms × furnished granularity. Where there is ambiguity, Pilot refuses to conclude rather than pick a cap at random.
Tenancy agreements and documents
Thirty letters, pre-filled from the file.
Notices to quit, formal notice, repayment plan, reconciliation, deposit refund, works, insurance, guarantor, managing agent; guarantee deed, certificates, SCI general meetings. Amounts rebuilt instalment by instalment.
Deadlines and compliance
Twelve months ahead of you, not twelve months behind.
EPC, surveys, insurance, end of tenancy, tax deadlines, over a rolling twelve months.
Content reviewed on 2026-10-07.
Get started
Add your first property.
At launch: a 7-day trial on your real properties, card required.