{"id":23247,"date":"2026-04-10T08:31:32","date_gmt":"2026-04-10T08:31:32","guid":{"rendered":"https:\/\/domidea-ristrutturazioni.it\/senza-categoria\/electrical-system-rewiring-costs-interventions-and-regulations\/"},"modified":"2026-04-10T08:32:00","modified_gmt":"2026-04-10T08:32:00","slug":"electrical-system-rewiring-costs-interventions-and-regulations","status":"publish","type":"post","link":"https:\/\/domidea-ristrutturazioni.it\/en\/advice-and-guides\/electrical-system-rewiring-costs-interventions-and-regulations\/","title":{"rendered":"Electrical system rewiring: costs, interventions, and regulations"},"content":{"rendered":"\n<p>The <strong>rewiring of the electrical system<\/strong> represents one of the most important interventions within a home, both to guarantee safety and to improve energy efficiency. Replacing the electrical system becomes a true necessity when the existing system no longer complies with regulations or does not support modern requirements. <\/p>\n\n<p>In recent years, the increasing prevalence of electronic devices has made the <strong>renovation of the electrical system<\/strong> indispensable, especially in buildings constructed before the 1990s. Rewiring the electrical system means updating outlets, panels, cables, and protection systems, ensuring safe and efficient energy distribution. <\/p>\n\n<h2 class=\"wp-block-heading\" id=\"h-ristrutturazione-impianto-elettrico-quali-lavori-comporta-nbsp\">Electrical system renovation: what the work involves <\/h2>\n\n<p>Totally rewiring the electrical system means <strong>replacing all the cables that distribute electricity throughout the home<\/strong>. In most cases, electrical cables are run inside conduits with corrugated pipes and junction boxes embedded in the walls. If we are fortunate and the diameter of the conduits allows it, it may not be necessary to break the walls and create new chases, but unfortunately, this possibility rarely occurs, especially in properties that are more than 30 years old.  <\/p>\n\n<p>If you are in the context of a <a href=\"https:\/\/domidea-ristrutturazioni.it\/en\/turnkey-home-renovation\/\">house or apartment renovation<\/a>, it is important to consider the opportunity to completely redo the electrical system, taking advantage of the possibility of easily carrying out masonry work. Furthermore, in a renovation, the replacement of the electrical system with compliance upgrades can benefit from the <a href=\"https:\/\/domidea-ristrutturazioni.it\/en\/renovation-bonus-50-tax-deductions\/\">renovation bonus, with a deduction of up to 50%<\/a> of the expenses incurred.  <\/p>\n\n<h2 class=\"wp-block-heading\" id=\"h-rifacimento-parziale-dell-impianto-elettrico\">Partial rewiring of the electrical system<\/h2>\n\n<p>It is also possible to intervene on only part of the electrical system without having to rewire it completely. However, <strong>this possibility depends on several factors<\/strong>, including the general state of the system, compliance with current regulations, safety aspects, and the actual feasibility of the intervention. <\/p>\n\n<p>When the <strong>system is dated and does not meet current safety standards, it is often more cost-effective to install a new electrical system<\/strong>, a complete rewiring. This ensures greater safety and efficiency, avoiding more invasive and expensive interventions within a few years. <\/p>\n\n<p>Conversely, if the system is in good condition and already up to code, it is possible to intervene only on the parts that need it. For example, worn cables can be replaced or certain lighting points can be updated. Additionally, it is also possible to expand the existing system by adding new lighting points or outlets.  <\/p>\n\n<h2 class=\"wp-block-heading\" id=\"h-come-e-composto-un-impianto-elettrico\">How an electrical system is composed<\/h2>\n\n<p>An electrical system includes all the elements necessary to distribute and use energy within a home. When deciding to rewire it, it is fundamental to <strong>bring it into compliance with current regulations and technical standards<\/strong>, so as to guarantee safety, efficiency, and also savings on energy consumption over time. <\/p>\n\n<p>A system that is up to code not only reduces costs in the long run but also allows access to potential tax deductions. For this reason, it is important to know its structure and main components. <\/p>\n\n<p>At the base, we find the <strong>meter<\/strong>, which belongs to the electricity grid operator and is installed at the point where energy is supplied; in apartment buildings, it is generally located in the meter room. From here, the connection starts to the <strong>electrical panel<\/strong>, located inside the home, which distributes the current to the various rooms. Modern panels are equipped with <strong>safety devices, such as a circuit breaker<\/strong>, which trips automatically in the event of an overload or fault.  <\/p>\n\n<p>From the central system, the <strong>electrical lines<\/strong> then develop, carrying energy throughout the house via cables. These lines are organized and divided thanks to <strong>junction boxes<\/strong>, which direct the current toward the different points of use. <\/p>\n\n<p>Finally, there are the elements we interact with every day: <strong>switches, outlets, and lighting points<\/strong>. They are installed inside specific boxes embedded in the walls and completed with cover plates. New generation outlets include protection systems that increase safety, making them particularly reliable even in the presence of children.  <\/p>\n\n<h2 class=\"wp-block-heading\" id=\"h-costi-per-rifare-l-impianto-elettrico\">Costs for rewiring the electrical system<\/h2>\n\n<p>The costs for rewiring the electrical system depend on several factors: the size of the property, the state of the existing system, the type of interventions required, and the aesthetic or technological choices adopted.<\/p>\n\n<p>As a guideline, one can consider a cost that generally ranges from <strong>\u20ac50 to \u20ac150 for each lighting point<\/strong>, while per <strong>square meter it fluctuates between approximately \u20ac40 and \u20ac80<\/strong>. In the case of a 100 sqm apartment, the total expenditure usually falls between \u20ac4,000 and \u20ac8,000. This figure, however, can change based on the number of lighting points (which in a standard system are at least 40), the work to be carried out, and the quality of the materials chosen.  <\/p>\n\n<h2 class=\"wp-block-heading\" id=\"h-normative-e-certificazioni-obbligatorie\">Regulations and mandatory certifications<\/h2>\n\n<p>The main regulation governing the rewiring of electrical systems is <a href=\"https:\/\/www.mimit.gov.it\/images\/stories\/recuperi\/Impresa_internazionalizzazione\/DM-22-gennaio-2008.pdf\"><strong>Ministerial Decree 37 of January 22, 2008<\/strong><\/a>, which updates and integrates what was already provided for by Law 46 of March 13, 1990. This regulation establishes that all systems created after 2008 must be accompanied by a <strong>Declaration of Conformity<\/strong>, issued by qualified entities. <\/p>\n\n<p>In particular, the Declaration of Conformity (DICO) <em>must be issued by the technician or the company that performed the work<\/em>. To be able to issue this document, the company must be regularly registered in the business register or the register of artisanal enterprises and possess the necessary professional qualifications. <\/p>\n\n<p>At the end of the work, the declaration is delivered to the property owner. Subsequently, the company is required to transmit it to the Municipality within 30 days; the latter will then forward it to the Chamber of Commerce for the relevant verifications. <\/p>\n\n<p>Several fundamental documents must be attached to the declaration, including the electrical system project (mandatory for homes larger than 400 square meters or with a power capacity exceeding 6 kW, drafted by a qualified engineer), the list of materials used, and the company&#8217;s Chamber of Commerce certificate.<\/p>\n\n<p>The <strong>Declaration of Conformity is an essential document<\/strong> not only to certify the safety of the system but also to <strong>obtain a certificate of occupancy<\/strong> in the case of new constructions or complete renovations, as well as to <strong>access tax deductions<\/strong>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Rewiring the electrical system is one of the most important interventions within a home, both to guarantee safety and to improve energy efficiency. Let&#8217;s look at what it involves and what the costs are. <\/p>\n","protected":false},"author":6,"featured_media":23244,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_eb_attr":"","ngg_post_thumbnail":0,"footnotes":""},"categories":[62,1],"tags":[],"class_list":["post-23247","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-advice-and-guides","category-senza-categoria"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.3 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Electrical system rewiring: costs, standards, and tax deductions<\/title>\n<meta name=\"description\" content=\"Rewiring an electrical system involves specific interventions and compliance with dedicated regulations. 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