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Expertise
Understanding a building also means knowing how to read it. The Atelier shares here its expertise on historic‑building restoration: regulations, traditional techniques, site supervision, and the specificities of the protected sectors of Versailles and Paris.
Financial tracking of the construction site: the architect‑project manager's overlooked role
Architects are commonly linked to design and technical site supervision, but their role in controlling a project's finances is equally crucial and often overlooked by owners. From awarding contracts to closing accounts, the architect‑project manager is the first line of defence against budget drift. See our Expertise page for details. Tendering assistance (ACT) Before the site even opens, the architect assists the client in selecting contractors. This phase begins with prepar
Antoine de Gironde
May 283 min read
Historic colours in Versailles — what the rules require and what the walls reveal about the building’s history
In Versailles the colour of a façade isn’t chosen freely. Inside the protected zone it’s set by the PSMV, approved by the Architecte des Bâtiments de France, and often informed by the building’s historical paintwork. Understanding that process prevents expensive exchanges with the authorities — and can even reveal surprising historical finds. Versailles' official colour palette Working with the ABF, the City of Versailles has published an official heritage‑works guide that sp
Antoine de Gironde
May 283 min read
Architectural survey and chartered surveyor survey — two complementary processes
Before starting any renovation or restoration, accurate knowledge of the existing building is essential. Two surveys are carried out during this preparatory phase: the chartered surveyor’s survey, which certifies dimensions, and the architectural survey, which adds a qualitative assessment of the building. These two surveys are complementary. For historic buildings, coordinating them is central to the diagnostic work the project architect undertakes before any intervention. T
Antoine de Gironde
May 283 min read
Saint‑Louis Quarter, Versailles — history, architecture and renovation challenges
The Saint‑Louis district is one of Versailles’ two historic neighbourhoods protected by the PSMV. Erected rapidly from 1685 to accommodate courtiers and court officers, its fabric still shows the marks of that accelerated development: lightweight structures, complicated ground conditions and pervasive cellars. Renovation here requires working with a dense history and particular technical challenges that only a detailed diagnostic can foresee. Rapid development on challenging
Antoine de Gironde
May 284 min read
How much does hiring an architect cost?
It's often the first question clients ask. An architect's project‑management fees vary depending on the type of work, its complexity, the regulatory context and the scope of the commission. Our Expertise page describes the different phases of a full commission. Here is how fees are structured and what they actually cover. A percentage of the construction cost The most common form of remuneration is a percentage applied to the pre‑tax cost of the works, typically between 8% an
Antoine de Gironde
May 283 min read
How to replace windows in a protected area: a step‑by‑step guide
Window replacement is one of the most frequent works in historic housing. In protected zones, such as the surroundings of a listed monument or a Site Patrimonial Remarquable, this apparently simple task is subject to regulations that impose precise requirements on materials, profiles and finishes. Each situation is unique. Factors such as the state of the existing windows, the nature of the masonry, the sector’s protection status, and the ABF’s particular requirements for the
Antoine de Gironde
May 285 min read
Work acceptance, defects and guarantee: what you need to know
The handover of the works is one of the most important moments in a construction or renovation project. It marks the transfer of custody of the building from the contractor to the client and starts several warranty periods that carry significant legal and financial consequences. What is the handover of the works? Reception is the act by which the client declares they accept the work, with or without reservations. It is defined by Article 1792‑6 of the Civil Code and applies t
Antoine de Gironde
May 283 min read
The architect contract: what you need to know before you sign.
Signing a contract with an architect (project manager) is a binding act for both parties. It defines the scope of the mission, the fees, the responsibilities, and the conditions under which the project will be carried out. Understanding what this contract covers and what it entails is essential to the project's success. Our Expertise page details the seven stages of a full project management assignment. The Order of Architects' standard contracts. The National Council of the
Antoine de Gironde
May 284 min read
Working in an ABF area: what it changes concretely
Vous habitez à moins de 500 mètres d'un monument historique, ou dans une commune dotée d'un Site Patrimonial Remarquable ? Alors vos travaux sont soumis à l'avis de l'Architecte des Bâtiments de France. Ce que ça implique concrètement, peu de propriétaires le savent vraiment avant de déposer leur premier dossier.
Antoine de Gironde
May 263 min read
The PSMV of Versailles : a practical guide
À Versailles, toute intervention sur un bâtiment existant commence par une même question : votre bien est-il soumis au Plan de Sauvegarde et de Mise en Valeur ? Ce document réglementaire, spécifique aux Sites Patrimoniaux Remarquables (SPR), détermine ce que vous pouvez faire, ce que vous devez conserver et ce que l'administration vous autorisera ou non. En comprendre la logique, c'est gagner un temps précieux et éviter des surprises coûteuses en cours d'instruction.
Antoine de Gironde
May 263 min read
The Fondation du Patrimoine: label and funding
Méconnue des propriétaires privés, la Fondation du Patrimoine est pourtant l'un des outils les plus efficaces pour financer la restauration d'un bâtiment ancien non classé. Son label ouvre droit à des avantages fiscaux significatifs et parfois à des subventions directes.
Antoine de Gironde
May 212 min read
Co-ownership and heritage façade renovation in Versailles : the architect's role
In Versailles, a co‑owned façade restoration in a protected area goes far beyond a simple facelift. From the initial diagnosis and coordination with the Architecte des Bâtiments de France to votes at the general meeting and pursuing recognition such as the Fondation du Patrimoine label, the architect supports the co‑ownership at every step to restore historic fabric with respect for its heritage.
Antoine de Gironde
Apr 154 min read
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