The chain of title: reconstructing it through the Land Register.
A chain of title is the chronological sequence of a property's ownership transfers and charges. In Québec, you reconstruct it from the Land Register, link by link, to verify that each buyer took title from the previous disponer. This guide covers the method, the anomalies to flag and NotarIA's approach.
ATOM Solutions · July 19, 2026 · 10 min read
What is a chain of title?
A chain of title is the chronological sequence of ownership transfers and charges that have encumbered a property over time: sales, successions, mortgages, servitudes, discharges. Each published act forms a link; together, these links tell who held the property, from whom they acquired it and what still encumbers it.
In Québec, this reconstruction rests on the publication of rights: real rights in immovables must generally be published in the Land Register to be set up against third parties (C.c.Q. art. 2924). In return, one may generally rely on the register's entries (C.c.Q. art. 2938) — which grounds the confidence of parties and lenders in the title under review.
Reconstructing the chain is not, in itself, a conclusion: it is the factual basis on which the notary then exercises professional judgment. The content of this page is provided for information only; for a specific property, consult a notary.
The Land Register: how to use it
Maintained under the Act respecting the publication of rights (RLRQ c. P-2.2), the Land Register is a public register: anyone may consult it.
The entry point is the index of immovables, kept by cadastral lot number. For each lot, the index lists the entries published against the property: sales, mortgages, servitudes, various notices, discharges. Each entry receives a sequential registration number, which fixes its rank in time.
An entry is not the act itself: it summarizes its essential elements (nature of the act, dates, parties, lots concerned) and refers, as the case may be, to the published document. It is from these records — and the acts they summarize — that the chain is reconstructed.
Because the register is public, searching it requires no special authorization; it does, however, require method: the same property may have changed lot numbers, and the same name may appear under several spellings.
Reconstructing link by link
The method is deterministic: order the entries, then verify that each link connects to the next.
Dates count twice: the date of the act and the date of its publication, which do not always coincide. Where they differ, publication is generally what grounds opposability against third parties.
1. Establish the chronology
Order the entries by registration number, checking act dates and publication dates: the rank in the register generally fixes the order of rights.
2. Track the transfers
Identify each translative act (sale, succession, gift) and note the disponer and the acquirer.
3. Verify continuity
Each link's acquirer must match the next link's disponer: any apparent interruption is a chain break to be explained.
4. Track the charges
For each mortgage or servitude, check whether a later discharge extinguishes it — and whether that discharge targets the right entry.
Anomalies to flag
Four families of anomalies recur most often, plus the temporal benchmark of the thirty-year period.
Chain breaks
A disponer who does not appear as the acquirer in the previous link: an unpublished succession, a missing act or an indexing error, depending on the file.
Undischarged charges
A mortgage or servitude with no subsequent discharge remains registered and encumbers the property, even if the secured obligation appears extinguished.
Cross-referenced discharges
A discharge made by reference to another entry: verify that the reference actually targets the entry believed to be extinguished.
Renovated lot, old cadastre
A cadastral renovation (Land Surveying Act, RLRQ c. A-23) replaces lot numbers: the chain must bridge the old and the new numbering.
Thirty-year period
The usual temporal benchmark of the examination: one generally goes back about thirty years, a horizon inherited from the former law. Acquisitive prescription (C.c.Q. art. 2910) now generally runs over ten years (C.c.Q. art. 2917), but the depth of the examination depends on the file — age of the titles, the property's history, the lender's requirements.
Documenting your findings
A reconstructed chain is only as good as its traceability. Current practice is to record every finding in a dated report, where each assertion points back to its source entry: registration number, nature of the act, dates, parties.
This report becomes the file's memory: it lets a peer re-verify the reasoning, and it fixes in time what was known — and unknown — at the moment of the examination. Reservations belong in it: an illegible document, an uncovered period or an unconsulted source is declared as such, rather than passed over in silence.
How NotarIA reconstructs it
NotarIA applies this same method, in assisted form: the AI proposes, the notary disposes.
NotarIA never declares a title ‘good and marketable’: the AI prepares and flags; the conclusion belongs to the notary. The extraction itself was measured on real Land Register documents — 100% recall and 100% precision on 15 entries (7 documents), public methodology, gold standard under notary review.
Entry extraction
The AI extracts entries from uploaded documents (indexes, acts, including scans thanks to self-hosted OCR) or from manual entry: NotarIA has no direct Land Register access, and the report states this as a scope reservation.
Proposed, confirmed links
Each entry becomes a proposed link; the notary confirms, rejects or corrects it. Nothing is taken for granted.
Deterministic safety nets
Chain breaks, undischarged charges, the thirty-year period, acquirer/disponer continuity and lot concordance are checked by deterministic rules, not statistical intuition.
Dated, cited report
Every finding points to its source entry; the report is dated and filed to the record.
The steps at a glance
Obtain the index of immovables
Identify the property's cadastral lot and obtain its index from the Land Register: it lists every entry published against the lot.
Order the entries
Sort the entries by registration number, checking act dates and publication dates, to establish the chronology.
Verify continuity
For each transfer, confirm that one link's acquirer matches the next link's disponer; any interruption is a break to be explained.
Track charges and discharges
For each mortgage or servitude, look for a subsequent discharge and verify that it targets the right entry.
Flag anomalies
Flag chain breaks, undischarged charges, cross-referenced discharges, renovated-lot mismatches and the thirty-year period.
Document and conclude
Record every finding in a dated report cited to its source; the notary validates the findings and concludes on the title.
Frequently asked questions
What is the difference between a chain of title and a title examination?
The chain of title is the factual reconstruction: the sequence of a property's transfers and charges. Title examination is the notary's broader professional process, which relies on that chain — and on other documents such as the location certificate — to assess the title's validity. The conclusion always belongs to the notary.
How far back should you go?
It depends on the file: the age of the titles, the property's history, the lender's expectations. The thirty-year period is the usual benchmark; acquisitive prescription itself generally runs over ten years (C.c.Q. art. 2910, 2917). The notary adjusts the depth of the examination to the situation.
Is the Land Register exhaustive?
Not quite. The register only reflects rights that have been published in it — and only published rights are generally set up against third parties (C.c.Q. art. 2924). Situations of fact or unpublished rights may exist outside the register; hence the importance of the file's other documents and of the notary's judgment.
Does NotarIA query the Land Register directly?
No. Entries come in through uploaded documents (including scans, via OCR) or through manual entry; the report states this explicitly as a scope reservation. The AI proposes the links and applies the deterministic safety nets; the notary confirms and concludes.
Move from method to practice.
See how NotarIA reconstructs a chain of title on your own files.
Assistant — not legal advice. The notary reviews, signs and decides on every act.