The Four Universes

Irrinium Immobilier

Character properties, projects, expertise and professional real estate guidance — since 2000.

Character property became, from 2000 onwards, the house’s principal activity — following the founding years devoted to architecture in connection with geobiology, and the harmonisation of living spaces that was added a few years later. This original sensibility, discreetly maintained, still irrigates Irrinium’s approach today. For twenty-six years, we have accompanied the transmission of history-laden properties — exceptional homes, family estates, properties of patrimonial vocation.

Our approach is not that of a conventional broker. We work through the filter of the living: each property is regarded as a stewardship rather than a transaction to be concluded. We take the time to read the place, its history, what it calls to become — before even discussing market value.

« A property laden with history is not sold, it is transmitted. »

Discretion is our signature: none of our clients is cited publicly, no photograph is published without explicit consent. We work in silence, on the long term.

Web Harmonie

Digital architecture, website creation and research into new organisational systems.

Web Harmonie was born from a large-scale technical management experience. From 2011 onwards, the founder and his son devoted three years to designing an international real estate portal — a global professional network linking high-end agencies, investors and buyers. The serious failure of the contracted developer interrupted the project, but this crossing left a deep understanding of major digital undertakings — their design logic, architecture, and international ergonomics. Its very name — Harmonie — recalls the house’s original sensibility toward the harmonisation of places. The same approach — attentive to flows, balances and resonances — governs every web architecture it creates today. It is this dual expertise, both technical and perceptual, that structures Web Harmonie.

Our digital division goes beyond simple website creation. We design bespoke digital architectures, where every line of code, every interaction, every word serves a just message. Without ostentation, without showmanship.

Alongside the regular website creation activity, Web Harmonie conducts an experimental research programme in collaboration with the Laboratoire Conscientiel. This research aims to design the digital infrastructures required by new forms of societal organisation.

« Digital technology in service of meaning, never the reverse. »

All projects pass through the same filter: does this contribute to the balance of the living? Digital technology, when designed with attention, can serve meaning. When it is not, it erodes it.

Discover Web Harmonie

Laboratoire Conscientiel

Exploration and experimentation of the dynamics of consciousness — rigorous inner observation, without dogma.

Founded in 2022, the Laboratoire Conscientiel is Irrinium’s research space. It is here, under conditions of deep inner observation, that the exploration of the dynamics of consciousness is conducted — studies of states of presence, attention and perception — in a progressive and rigorous approach, grounded in lived experience.

The Laboratory aligns with no spiritual current, no belief system. It publishes, experiments, transmits — and welcomes those who seek to understand for themselves rather than receive ready-made answers.

« When perception is accurate, analysis becomes self-evident. »

The Laboratory is the place where theory meets lived experience, and where abstract notions take form in precise practices.

Visit the Laboratory

Yannick Costechareyre

Personal site of the founder — author of La Sageocratie.

Yannick Costechareyre is the founder of Irrinium (1998), of the Laboratoire Conscientiel (2022) and the author of the forthcoming work La Sageocratie. His personal site is the space where the philosophy inspiring the entire portal takes its intellectual form.

More than forty years of journey at the crossroads of matter and consciousness — from civil engineering and architecture to character real estate projects, then toward human accompaniment and the exploration of consciousness. La Sageocratie is its written synthesis.

« A direction that was not invented, but glimpsed. »

This is where the thought that irrigates, without determining, all of Irrinium’s activities is forged. To read this site is to understand the source from which each universe draws its coherence.

Visit the personal site