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Immutable legal records
A tenancy generates documents that decide who owes what, who lives where, and what was agreed. In Haven, those records can be added to but never altered in place. Every version is kept, every change is a new entry that points back to the one before it, and the full history is there for both sides to read.
What counts as a legal artifact in Haven
A legal artifact is any record that carries weight if it is ever questioned. In Haven that means the lease and any addenda, e-signatures and the identity that stood behind them, formal notices (renewal, non-renewal, rent change, move-out), and the payment record: every rent charge, every SEPA autopay collection, the escrow deposit held, and the invoices tied to the tenancy.
These are treated differently from ordinary app data. A saved search or a draft message can be changed or deleted freely. A signed lease cannot. Once an artifact is committed, it becomes part of the permanent record of the tenancy and follows the rules on this page.
Money records sit under an additional rule. Balances in Haven are never a number someone edits up or down. Every cent moves as a double-entry journal entry, and a balance is derived by summing those entries. There is no field to overwrite, which is exactly the point.
Append-only records and full audit trails
Append-only means you can add to the record but you cannot rewrite what is already there. Each artifact is written once. If something needs to change, a new record is written alongside it; the original stays exactly as it was.
Every record carries an audit trail: what it is, when it was created, and which action produced it. For signatures and notices that includes who acted and when they acted. For payments it includes the journal entries that moved the money and the event that triggered them, such as an autopay collection or a deposit being placed into escrow.
Because nothing is destroyed, the trail is continuous. You can follow a tenancy from the first signature to the final move-out statement without a gap, and without having to trust that no one quietly changed a figure along the way.
How a correction is made without an edit
Mistakes happen. A lease references the wrong start date; an invoice has the wrong amount; a notice was issued in error. Haven handles all of these the same way: the original record is kept, and a new record is written that references it and states the correction.
For documents, that means a superseding version linked to the one it replaces, so anyone reading the file sees both the corrected record and what it corrected. For money, a mistaken entry is not deleted. A reversing journal entry is posted, and if needed a fresh correct entry follows. The ledger still adds up, and the error and its fix are both visible.
The result reads like a paper trail done properly. Nothing disappears. You can always answer the question that matters in a dispute: what was agreed, what changed, and in what order.
Why immutability protects both sides
When records can be edited in place, the person with access to the system holds all the power. They can change a date, adjust a balance, or make a notice look like it was sent earlier than it was, and the other party has no way to prove otherwise. Immutability removes that power from everyone, including Haven.
For a renter, it means the terms you signed are the terms on record, your rent payments are permanently logged, and your deposit is accounted for entry by entry. For an owner, it means a tenant cannot claim a lease said something it did not, and every collection and notice is documented and timestamped.
This is the same discipline banks and accountants have used for a long time, applied to a tenancy. It is quiet infrastructure. You rarely think about it, and that is the sign it is working.
Accessing and exporting your records
Your records are visible to you throughout the tenancy. In the Renter and Owner apps you can open the lease, review notices, and see the full payment history with each charge, collection, and the escrow deposit laid out clearly.
Because these are your records, you can take them with you. Haven provides an export of the documents and payment history tied to your tenancy, in a form suitable for your accountant, a new landlord, or your own files. The export reflects the same append-only history you see in the app, corrections included.
Access follows tenancy boundaries strictly. You see the records for tenancies you are a party to, and nothing else. That isolation is enforced from your signed session, not from anything a browser or a request could claim to be.