{"id":3150,"date":"2026-08-13T15:00:23","date_gmt":"2026-08-13T15:00:23","guid":{"rendered":"https:\/\/lucchesini-delapommeraye.com\/?p=3150"},"modified":"2026-10-10T21:16:05","modified_gmt":"2026-10-10T21:16:05","slug":"architecte-interieur-decorateur-quelles-differences","status":"publish","type":"post","link":"https:\/\/lucchesini-delapommeraye.com\/en\/architecte-interieur-decorateur-quelles-differences\/","title":{"rendered":"Architect, interior designer, decorator: what are the differences?"},"content":{"rendered":"
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You want to <\/span>redo your interior but are hesitating <\/span>about which professional to contact <\/span>? Three professions <\/span>coexist, and are often confused. <\/span>The architect modifies the <\/span>building's structure. <\/span>The interior designer rethinks <\/span>the layout and ergonomics without <\/span>touching the structural work. The decorator <\/span>dresses the space with <\/span>colors, furniture, and <\/span>finishes. The right choice depends <\/span>mostly on the nature of your <\/span>work, and this article gives you <\/span>a simple analytical framework <\/span>to decide according to your <\/span>actual project.<\/span><\/p>\r\n\r\n<\/div>\r\n

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The architect <\/span>(HMONP\/DPLG): the master of the <\/span>structure<\/span><\/h4>\r\n<\/div>\r\n
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The architect intervenes <\/span>on the building's <\/span>envelope. They design load-bearing <\/span>walls, facades, and <\/span>extensions and vertical extensions. Its <\/span>field covers structural work <\/span>and the solidity of the structure.<\/span><\/p>\r\n\r\n<\/div>\r\n

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Its title is protected by <\/span>law. You can <\/span>consult the conditions of practice <\/span>of the <\/span>profession of DPLG or HMONP architect<\/span><\/a> with <\/span>the Order of Architects. This <\/span>regulation stems from the law of 3 <\/span>January 1977 on <\/span>architecture.<\/span><\/p>\r\n\r\n<\/div>\r\n

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The architect is the <\/span>only one authorized to sign <\/span>certain building permit <\/span>applications. They assume <\/span>liability for the structure and <\/span>compliance with urban planning <\/span>rules.<\/span><\/p>\r\n

Here is a useful professional tip before making a decision. If your project changes the intended use of a property, for example converting a garage into a living space with facade modifications, using an architect becomes mandatory as soon as the total floor area exceeds 150 m\u00b2. This rule is detailed on <\/span>Service-Public<\/span><\/a>. Below this threshold, or to rethink the internal layout, the interior designer remains the ideal partner.<\/span><\/p>\r\n\r\n<\/div>\r\n

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The architect <\/span>interior designer: the specialist in <\/span>space<\/span><\/h4>\r\n<\/div>\r\n
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The architect <\/span>interior design works within existing structures. They optimize volumes, manage light, and rethink the flow between rooms. Their goal remains daily use and comfort.<\/span><\/p>\r\n\r\n<\/div>\r\n

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At L&DP Atelier, this approach guides every restructuring project. Hiring an <\/span>interior designer to rethink your spaces<\/span><\/a> makes it possible to transform a home without altering its heavy structure.<\/span><\/p>\r\n\r\n<\/div>\r\n

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This professional also designs kitchens, walk-in closets, and custom furniture. They produce schematic plans intended for craftspeople. However, they do not perform structural calculations themselves, but can call upon an external service provider.<\/span><\/p>\r\n

You will find several <\/span>examples of interior restructuring<\/span><\/a> carried out using this logic.<\/span><\/p>\r\n\r\n<\/div>\r\n

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The decorator: the expert in ambiance and finishes<\/span><\/h4>\r\n<\/div>\r\n
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The decorator works on the visible layer of your interior. They choose colors, materials, textiles, and furniture. Their work enhances a room without breaking any partitions.<\/span><\/p>\r\n\r\n<\/div>\r\n

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Their intervention is perfectly suited for an aesthetic refresh. You keep the existing layout and focus on overall harmony. This is often the final stage of a renovation.<\/span><\/p>\r\n\r\n<\/div>\r\n

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The decorator modifies neither the structure nor the layout of the walls. Their role remains the atmosphere and decorative coherence of the whole.<\/span><\/p>\r\n\r\n<\/div>\r\n

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The frequent mistake never to make<\/span><\/h4>\r\n<\/div>\r\n
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Entrusting the removal of a load-bearing wall to a decorator or a masonry company without qualified validation puts the building at risk. A load-bearing wall supports the weight of the upper floor. Its removal requires the study of a structural engineer or an engineering firm.<\/span><\/p>\r\n\r\n<\/div>\r\n

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In Nice, this precaution takes on an additional dimension. The Metropolitan Local Urban Plan (PLUm<\/a>) of the Nice C\u00f4te d\u2019Azur Metropolis strictly regulates facade modifications in certain neighborhoods. Non-compliant work can lead to a refusal of authorization.<\/span><\/p>\r\n\r\n<\/div>\r\n

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Frequently Asked Questions (FAQ)<\/span><\/h4>\r\n<\/div>\r\n
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Do you need a degree to be an interior designer?<\/span><\/strong>\r\nThe title of interior designer is not protected by law, unlike that of an architect. Quality is therefore judged by the provider's portfolio, references, and professional insurance.<\/span><\/p>\r\n\r\n<\/div>\r\n

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Who should you choose to completely renovate an apartment?<\/span><\/strong>\r\nTo entirely <\/span>rethink the layout without <\/span>touching the <\/span>structure, <\/span>the interior <\/span>designer <\/span>is sufficient. If the work <\/span>involves load-bearing walls <\/span>or facades, they rely <\/span>on a structural <\/span>engineer and, depending on the <\/span>project, an architect.<\/span><\/p>\r\n\r\n<\/div>\r\n

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Which professional can submit a building permit application?<\/span><\/strong>\r\nOnly an <\/span>architect registered with the Order <\/span>can sign a building permit <\/span>application as soon as <\/span>the legal threshold of <\/span>surface is reached. Below, <\/span>an individual can <\/span>to submit his application himself.<\/span><\/p>\r\n\r\n<\/div>\r\n

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Conclusion<\/span><\/h4>\r\n<\/div>\r\n
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Each<\/span> profession has a <\/span>precise scope of action. <\/span>The architect protects the <\/span>structure, the interior <\/span>optimized interior <\/span>usage and decorator <\/span>cure the atmosphere. Good <\/span>identify your real need <\/span>guarantees success <\/span>aesthetic, functional and <\/span>legal of your project. The <\/span>good question is not \u00ab <\/span>what degree? \u00bb but \u00ab <\/span>what is the nature of <\/span>my work? \u00bb.<\/span><\/p>\r\n\r\n<\/div>\n\n\n

To go further:<\/strong> discover the difference between an architect and an interior designer<\/a>, how to choose the right interior designer in Nice<\/a> and how much an interior designer costs in Nice in 2026<\/a>.<\/p>\n\n","protected":false},"excerpt":{"rendered":"

Want to redo your interior but hesitating on which professional to contact? Three professions coexist, often confused. The architect modifies the structure...<\/p>\n","protected":false},"author":4,"featured_media":3153,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":"","gopublish_seo_title":"","gopublish_seo_description":""},"categories":[46],"tags":[],"class_list":["post-3150","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-conseils"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t