Tenon
Tenon

The decision layer for Dutch housing — Rental and Sale, lawful in every step.

Tenon decides who qualifies — a household for a rental home, a buyer at a bid — runs the procedure the law requires, from the published criteria to the award or the transfer, and publishes a record anyone can verify. Both rails run on rules cited to Dutch law, so compliance isn't a module you add. It's how every part works.

Release 1.1.0. A stable core, tested on a synthetic estate and ready for its first integration.

Lawful in every step

Tacit decides by the law.Two rulebooks — 92 Rental rules and 77 Sale rules — each rule citing its source.

Ravel runs by the law.The Rental procedure the Wet goed verhuurderschap requires, and the Sale from the offer to the transfer at the notary — every decision a person's act, recorded as it was reached.

RESOnance lets anyone check it.Rental and Sale listings on the RESO standard, and a public record a regulator or municipality can verify without asking anyone for access.

The two rails, end to end.Who decides, who signs and who holds which key, step by step — for a rental and for a sale.

The tenonThree parts, coupled only by published contracts.

C RESOnance open RESO and transparency holds no key B Ravel compliance and lifecycle holds the attestation key A Tacit decisioning and credentials holds the signing key RESO Web API, public register the procedure, as data the credential verified facts Portals aggregators and catalogues read and verify, hold no key CRM software agencies work in outcome in the file, not the documents Wallets carried by renters and buyers, from agency to agency Screening and data providers: ID, credit, income and attesters: mortgage advisers, appraisers, inspectors
Drawing
The integration joints
Held by
fit, not glue
Each tongue
a published contract
Tenon — French tenir, to hold. The joint holds by fit, and comes apart again. Each joint is designed against a published contract; none has yet been fitted to a particular host.
  1. Tacit

    decisioning and credentials

    Decides whether a household qualifies for a rental home, and whether a buyer's declared financing covers a bid — never an amount — and seals each answer into a credential its holder carries.

    Holds the signing keyRead about Tacit

  2. Ravel

    compliance and lifecycle

    Runs the Rental procedure and the Sale lifecycle the law requires — mandates, bids, the seller's award, the notary handover — and records how every decision was reached.

    Holds the attestation keyRead about Ravel

  3. RESOnance

    open RESO and transparency

    Publishes Rental and Sale listings on the RESO standard — closed sales with their price — with a public register anyone can verify.

    Holds no keyRead about RESOnance

Where you fit

For software companieshow Tenon joins your CRM, portal, screening or mortgage-advice product — for Rental and for Sale.

For institutionswhat Tenon gives associations, municipalities and regulators: the law built into both procedures.

For diligenceconformance runs, the public register, and what changes hands.

The proofEvery claim can be checked by someone who did not write it.

OpenID4VP 9 passed · 0 failed OpenID4VCI 17 passed · 1 failed EU reference issuer acquired live, verified RESO Commander valid metadata · DD 1.7 1.1.0 — eleven of eleven criteria met

Evidenceconformance runs and the public register

Standardswhat changes hands, against published standards

Who built it.

A former makelaar who built the tool the job was missing.

About

These pages are the public description. The rule corpus, the models, the decision record and the conformance material are available under NDA, at which point the conversation becomes exclusive.

hello@tacit.software