{"id":4714,"date":"2026-10-05T09:39:05","date_gmt":"2026-10-05T09:39:05","guid":{"rendered":"https:\/\/www.agorastore-immo.fr\/magazine\/?p=4714"},"modified":"2026-10-06T07:59:46","modified_gmt":"2026-10-06T07:59:46","slug":"renover-ou-ceder-le-patrimoine-public-face-au-decret-tertiaire","status":"publish","type":"post","link":"https:\/\/www.agorastore-immo.fr\/magazine\/renover-ou-ceder-le-patrimoine-public-face-au-decret-tertiaire\/","title":{"rendered":"R\u00e9nover ou c\u00e9der le patrimoine public face au D\u00e9cret Tertiaire"},"content":{"rendered":"\n<div class=\"wp-block-media-text is-stacked-on-mobile\" style=\"grid-template-columns:32% auto\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"1024\" src=\"https:\/\/www.agorastore-immo.fr\/magazine\/wp-content\/uploads\/2026\/10\/pexels-ryszard-zaleski-29105926-33360821-768x1024.jpg\" alt=\"\" class=\"wp-image-4719 size-full\" srcset=\"https:\/\/www.agorastore-immo.fr\/magazine\/wp-content\/uploads\/2026\/10\/pexels-ryszard-zaleski-29105926-33360821-768x1024.jpg 768w, https:\/\/www.agorastore-immo.fr\/magazine\/wp-content\/uploads\/2026\/10\/pexels-ryszard-zaleski-29105926-33360821-225x300.jpg 225w, https:\/\/www.agorastore-immo.fr\/magazine\/wp-content\/uploads\/2026\/10\/pexels-ryszard-zaleski-29105926-33360821-1152x1536.jpg 1152w, https:\/\/www.agorastore-immo.fr\/magazine\/wp-content\/uploads\/2026\/10\/pexels-ryszard-zaleski-29105926-33360821-1536x2048.jpg 1536w, https:\/\/www.agorastore-immo.fr\/magazine\/wp-content\/uploads\/2026\/10\/pexels-ryszard-zaleski-29105926-33360821-scaled.jpg 1920w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p class=\"wp-block-paragraph\">Les collectivit\u00e9s arbitrent aujourd&rsquo;hui entre trois options pour leur parc immobilier : r\u00e9nover, c\u00e9der ou d\u00e9l\u00e9guer. Le D\u00e9cret Tertiaire, le Z\u00e9ro Artificialisation Nette et des budgets contraints obligent \u00e0 trancher b\u00e2timent par b\u00e2timent. Cette grille de lecture aide les directions du patrimoine et des finances \u00e0 d\u00e9cider avant l&rsquo;\u00e9ch\u00e9ance.<\/p>\n<\/div><\/div>\n\n\n\n<div style=\"height:31px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading has-text-color has-link-color wp-elements-1\" style=\"color:#9d1e52\" id=\"quelles-obligations-reglementaires-pesent-sur-le-patrimoine-public\"><strong>Quelles obligations r\u00e9glementaires p\u00e8sent sur le patrimoine public ?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Trois cadres r\u00e9glementaires structurent aujourd&rsquo;hui les d\u00e9cisions patrimoniales des collectivit\u00e9s. Le D\u00e9cret Tertiaire impose une r\u00e9duction de la consommation d&rsquo;\u00e9nergie finale des b\u00e2timents de plus de 1 000 m\u00b2 : 40 % d&rsquo;ici 2030, 50 % d&rsquo;ici 2040, 60 % d&rsquo;ici 2050, par rapport \u00e0 une ann\u00e9e de r\u00e9f\u00e9rence. La d\u00e9claration annuelle des consommations sur la plateforme OPERAT est obligatoire, avec une \u00e9ch\u00e9ance fix\u00e9e au 30 septembre de chaque ann\u00e9e.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Le d\u00e9cret relatif au syst\u00e8me d&rsquo;automatisation et de contr\u00f4le des b\u00e2timents ajoute une obligation d&rsquo;\u00e9quipement de gestion technique pour les b\u00e2timents tertiaires dot\u00e9s de syst\u00e8mes de chauffage ou de climatisation d&rsquo;une puissance sup\u00e9rieure \u00e0 290 kW, seuil \u00e9tendu aux syst\u00e8mes de plus de 70 kW d&rsquo;ici 2030. La loi relative \u00e0 l&rsquo;acc\u00e9l\u00e9ration de la production d&rsquo;\u00e9nergies renouvelables impose par ailleurs l&rsquo;installation de panneaux solaires ou de dispositifs de v\u00e9g\u00e9talisation sur certaines toitures et ombri\u00e8res de parking.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">En parall\u00e8le, l&rsquo;objectif Z\u00e9ro Artificialisation Nette limite l&rsquo;ouverture de nouvelles surfaces \u00e0 l&rsquo;urbanisation. Cette contrainte donne une valeur nouvelle au b\u00e2ti existant : r\u00e9habiliter un immeuble public co\u00fbte du budget, mais \u00e9vite d&rsquo;artificialiser des terres agricoles ou naturelles.<\/p>\n\n\n\n<h2 class=\"wp-block-heading has-text-color has-link-color wp-elements-2\" style=\"color:#9d1e52\" id=\"combien-coute-un-batiment-public-inoccupe\"><strong>Combien co\u00fbte un b\u00e2timent public inoccup\u00e9 ?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Un b\u00e2timent public vacant co\u00fbte en moyenne entre 15 et 25 euros par m\u00e8tre carr\u00e9 et par an. Ce montant regroupe des d\u00e9penses souvent invisibles dans les arbitrages budg\u00e9taires :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>l&rsquo;assurance du b\u00e2timent, maintenue m\u00eame sans usage<\/li>\n\n\n\n<li>le gardiennage ou la surveillance contre les intrusions et d\u00e9gradations<\/li>\n\n\n\n<li>les taxes fonci\u00e8res et charges associ\u00e9es<\/li>\n\n\n\n<li>le maintien hors-gel et la maintenance minimale pour \u00e9viter la d\u00e9gradation acc\u00e9l\u00e9r\u00e9e<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Pour un ancien groupe scolaire de 2 000 m\u00b2 laiss\u00e9 vacant, la charge annuelle atteint donc 30 000 \u00e0 50 000 euros, sans aucune contrepartie de service public. Sur cinq ans, ce co\u00fbt d\u00e9passe fr\u00e9quemment la valeur r\u00e9siduelle du bien. Cette donn\u00e9e change souvent la nature de l&rsquo;arbitrage : conserver un actif inutilis\u00e9 ou sous-exploit\u00e9 n&rsquo;est pas une position neutre, c&rsquo;est une d\u00e9pense continue.<\/p>\n\n\n\n<h2 class=\"wp-block-heading has-text-color has-link-color wp-elements-3\" style=\"color:#9d1e52\" id=\"faut-il-conserver-ou-vendre-un-batiment-public\"><strong>Faut-il conserver ou vendre un b\u00e2timent public ?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">La d\u00e9cision se pose b\u00e2timent par b\u00e2timent, en distinguant deux cat\u00e9gories d&rsquo;actifs. Les actifs remarquables ont une valeur d&rsquo;usage public ou patrimoniale forte : mairie historique, \u00e9cole en activit\u00e9, gymnase, \u00e9quipement culturel. Les actifs liquides se c\u00e8dent sans perte de service : parcelles constructibles, logements de fonction inoccup\u00e9s, anciens locaux administratifs.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color wp-elements-4\" style=\"color:#9d1e52\" id=\"scenario-1-conserver-le-bien-et-financer-sa-renovation\"><strong>Sc\u00e9nario 1 : conserver le bien et financer sa r\u00e9novation<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ce sc\u00e9nario consiste \u00e0 financer les travaux d&rsquo;un actif remarquable en c\u00e9dant des actifs liquides. La m\u00e9canique est celle des vases communicants : la cession de parcelles constructibles ou de logements de fonction d\u00e9gage la tr\u00e9sorerie n\u00e9cessaire pour r\u00e9nover la \u00ab jolie pierre \u00bb que la collectivit\u00e9 souhaite garder.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Exemple concret : une commune vend trois logements de fonction vacants et une parcelle constructible en p\u00e9riph\u00e9rie. Le produit de cession finance l&rsquo;isolation et le changement de syst\u00e8me de chauffage de l&rsquo;\u00e9cole du centre-bourg, mise en conformit\u00e9 avec le D\u00e9cret Tertiaire sans recours \u00e0 l&#8217;emprunt.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color wp-elements-5\" style=\"color:#9d1e52\" id=\"scenario-2-deleguer-la-charge-de-renovation-lourde\"><strong>Sc\u00e9nario 2 : d\u00e9l\u00e9guer la charge de r\u00e9novation lourde<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ce sc\u00e9nario transf\u00e8re la r\u00e9novation d&rsquo;un b\u00e2timent lourd \u00e0 un op\u00e9rateur priv\u00e9, via la cession. La collectivit\u00e9 r\u00e9alloue alors 100 % de ses cr\u00e9dits sur les b\u00e2timents d&rsquo;utilit\u00e9 publique prioritaires : \u00e9coles, gymnases, voiries. Un ancien b\u00e2timent administratif \u00e9nergivore, dont la r\u00e9novation co\u00fbterait plusieurs millions d&rsquo;euros, sort du parc public. L&rsquo;acqu\u00e9reur priv\u00e9 assume la remise aux normes, et la collectivit\u00e9 concentre son budget l\u00e0 o\u00f9 le service au public est direct.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Dans les deux cas, l&rsquo;arbitrage n&rsquo;est pas un abandon. C&rsquo;est un acte de gestion du portefeuille public, comparable \u00e0 celui d&rsquo;un gestionnaire d&rsquo;actifs qui r\u00e9oriente ses ressources vers les postes \u00e0 plus forte utilit\u00e9.<\/p>\n\n\n\n<h2 class=\"wp-block-heading has-text-color has-link-color wp-elements-6\" style=\"color:#9d1e52\" id=\"une-commune-peut-elle-vendre-un-batiment-public\"><strong>Une commune peut-elle vendre un b\u00e2timent public ?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Oui, une commune peut c\u00e9der un bien immobilier, sous conditions de proc\u00e9dure. Un bien du domaine public doit d&rsquo;abord faire l&rsquo;objet d&rsquo;une d\u00e9saffectation, puis d&rsquo;un d\u00e9classement vers le domaine priv\u00e9 de la collectivit\u00e9. La d\u00e9saffectation constate la fin de l&rsquo;usage public. Le d\u00e9classement fait sortir juridiquement le bien du domaine public et le rend cessible.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La vente elle-m\u00eame suppose une d\u00e9lib\u00e9ration du conseil municipal, et un avis des Domaines pour l&rsquo;estimation de la valeur pour les communes de plus de 2 000 habitants. Si la proc\u00e9dure de mise en concurrence n&rsquo;est pas une obligation r\u00e9glementaire absolue, elle reste une bonne pratique fortement recommand\u00e9e pour garantir la transparence du prix. La vente aux ench\u00e8res en ligne r\u00e9pond \u00e0 cette exigence : elle met les acheteurs en concurrence et documente la formation du prix, ce qui s\u00e9curise juridiquement l&rsquo;op\u00e9ration.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Il est important de noter, que le vendeur public n&rsquo;est pas tenu d&rsquo;accepter l&rsquo;offre la plus \u00e9lev\u00e9e. Il peut <strong>choisir l&rsquo;acqu\u00e9reur selon la solidit\u00e9 du plan de financement ou la nature du projet<\/strong>, notamment pour privil\u00e9gier une r\u00e9habilitation plut\u00f4t qu&rsquo;une d\u00e9molition.<\/p>\n\n\n\n<h2 class=\"wp-block-heading has-text-color has-link-color wp-elements-7\" style=\"color:#9d1e52\" id=\"pourquoi-la-vente-aux-encheres-favorise-la-rehabilitation\"><strong>Pourquoi la vente aux ench\u00e8res favorise la r\u00e9habilitation ?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">La cession d&rsquo;un b\u00e2timent existant \u00e0 un op\u00e9rateur qui le r\u00e9habilite s&rsquo;inscrit dans une logique d&rsquo;\u00e9conomie circulaire du b\u00e2ti. Elle \u00e9vite deux impacts : la d\u00e9molition, co\u00fbteuse et g\u00e9n\u00e9ratrice de d\u00e9chets, et l&rsquo;artificialisation d&rsquo;un terrain neuf pour reconstruire ailleurs.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La question n&rsquo;est donc plus de savoir s&rsquo;il faut tout garder ou tout vendre. Elle consiste \u00e0 cartographier votre parc, distinguer les actifs remarquables des actifs liquides, et d\u00e9cider, avant les \u00e9ch\u00e9ances de 2030, quels b\u00e2timents m\u00e9ritent l&rsquo;investissement de r\u00e9novation et lesquels doivent sortir du parc au profit d&rsquo;un projet vertueux.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><br>Nous accompagnons les collectivit\u00e9s sur l&rsquo;ensemble de cette d\u00e9marche : estimation, strat\u00e9gie de commercialisation, gestion des visites, r\u00e9alisation des ench\u00e8res en ligne et suivi notarial. Plus de 3 000 entit\u00e9s publiques nous confient d\u00e9j\u00e0 la cession de leurs biens.<\/p>\n\n\n\n<div class=\"hs-cta-embed hs-cta-simple-placeholder hs-cta-embed-433611274441\"\n  style=\"max-width:100%; max-height:100%; width:690px;height:200.0312557529297px\" data-hubspot-wrapper-cta-id=\"433611274441\">\n  <a href=\"https:\/\/cta-eu1.hubspot.com\/web-interactives\/public\/v1\/track\/redirect?encryptedPayload=AVxigLLPqs1E4z5EXGguBobCFY2MQdbTtPnbfNnLw6OSFI7IRHBxTRMb8i6TWBz3mZJk5ddgaQ9owgIPAbE6rQKhvUVx04ZFGNwZh3J0BH0dBxtr4EYIY3PpoHadM6%2BdD1YwD0v8TSjRPX49WFQGEEQwiu0rfphRDBP%2FfN4ZymBv4ljVl9aHIRrcgxBYUtBGCcVeJi6p&#038;webInteractiveContentId=433611274441&#038;portalId=145615485\" target=\"_blank\" rel=\"noopener\" crossorigin=\"anonymous\">\n    <img decoding=\"async\" alt=\"Besoin d&rsquo;un avis d&rsquo;expert ou d&rsquo;un conseil sur-mesure ?\" loading=\"lazy\" src=\"https:\/\/hubspot-no-cache-eu1-prod.s3.amazonaws.com\/cta\/default\/145615485\/interactive-433611274441.png\" style=\"height: 100%; width: 100%; object-fit: fill\"\n      onerror=\"this.style.display='none'\" \/>\n  <\/a>\n<\/div>\n\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div style=\"height:45px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<div class=\"wp-block-image is-style-rounded\">\n<figure class=\"aligncenter size-medium is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"256\" height=\"300\" src=\"https:\/\/www.agorastore-immo.fr\/magazine\/wp-content\/uploads\/2026\/08\/Richard-Bougerie-256x300.jpg\" alt=\"\" class=\"wp-image-4585\" style=\"aspect-ratio:0.8866840099219554;width:204px;height:auto\" srcset=\"https:\/\/www.agorastore-immo.fr\/magazine\/wp-content\/uploads\/2026\/08\/Richard-Bougerie-256x300.jpg 256w, https:\/\/www.agorastore-immo.fr\/magazine\/wp-content\/uploads\/2026\/08\/Richard-Bougerie-875x1024.jpg 875w, https:\/\/www.agorastore-immo.fr\/magazine\/wp-content\/uploads\/2026\/08\/Richard-Bougerie-768x898.jpg 768w, https:\/\/www.agorastore-immo.fr\/magazine\/wp-content\/uploads\/2026\/08\/Richard-Bougerie.jpg 966w\" sizes=\"auto, (max-width: 256px) 100vw, 256px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"has-text-align-center wp-block-paragraph\"><strong><a href=\"https:\/\/www.agorastore-immo.fr\/magazine\/richard-bougerie\/\">Richard Bougerie<\/a><br><\/strong>Directeur du Secteur Public<br>Agorastore<\/p>\n<\/div><\/div>\n\n\n\n<div style=\"height:28px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Les collectivit\u00e9s arbitrent aujourd&rsquo;hui entre trois options pour leur parc immobilier : r\u00e9nover, c\u00e9der ou d\u00e9l\u00e9guer. Le D\u00e9cret Tertiaire, le Z\u00e9ro Artificialisation Nette et des budgets contraints obligent \u00e0 trancher b\u00e2timent par b\u00e2timent. Cette grille de lecture aide les directions du patrimoine et des finances \u00e0 d\u00e9cider avant l&rsquo;\u00e9ch\u00e9ance. Quelles obligations r\u00e9glementaires p\u00e8sent sur le [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":4719,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12,6],"tags":[],"class_list":["post-4714","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-articles-entites-publiques","category-entites-publiques"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>R\u00e9nover ou c\u00e9der le patrimoine public face au D\u00e9cret Tertiaire - Blog Agorastore Immo<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.agorastore-immo.fr\/magazine\/renover-ou-ceder-le-patrimoine-public-face-au-decret-tertiaire\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"R\u00e9nover ou c\u00e9der le patrimoine public face au D\u00e9cret Tertiaire - Blog Agorastore Immo\" \/>\n<meta property=\"og:description\" content=\"Les collectivit\u00e9s arbitrent aujourd&rsquo;hui entre trois options pour leur parc immobilier : r\u00e9nover, c\u00e9der ou d\u00e9l\u00e9guer. Le D\u00e9cret Tertiaire, le Z\u00e9ro Artificialisation Nette et des budgets contraints obligent \u00e0 trancher b\u00e2timent par b\u00e2timent. Cette grille de lecture aide les directions du patrimoine et des finances \u00e0 d\u00e9cider avant l&rsquo;\u00e9ch\u00e9ance. 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