Italy’s Building Regulations in 2026: The Rules That Now Govern Every Foreign Property Purchase
Italy’s regulatory framework for property construction and renovation has shifted significantly heading into 2026, driven by three converging forces: a proposed new national Building Code, the EU’s revised Energy Performance of Buildings Directive (EPBD), and an ongoing national debate over building amnesties. For international buyers — particularly Americans, British nationals, and other non-EU citizens — understanding these changes is no longer optional. They affect what you can buy, what it will cost to maintain, and whether a property can legally be sold to you at all.
The New Building Code: Simplification With Serious Teeth
Italy’s government has been advancing a revised Codice delle Costruzioni — a unified national building code intended to reduce the significant regulatory fragmentation that has long plagued the Italian property market. Until now, regional governments have applied diverging interpretations of national rules, creating inconsistencies that delay transactions and generate legal uncertainty. The National Council of Engineers (CNI) has publicly endorsed the reform direction while flagging unresolved issues around stato legittimo — the legal status of buildings — and the treatment of historic irregularities.
For buyers, stato legittimo is the concept that matters most. Before a property can be legally sold in Italy, it must be demonstrably compliant with all building permits ever issued for it. Any undeclared works — even minor ones — can block a sale or trigger penalties. A proposed sanatoria edilizia (building amnesty) currently under legislative discussion in 2026 could regularize some of these historic irregularities, but no final law has passed as of this writing. Buyers should not assume any property is automatically covered. The section below sets out how Italy approached minor building defects and property improvements in 2024, which is useful context for how these mechanisms work in practice.
What Counts as Illegal Construction, and What the 2024 Salva Casa Decree Changed
Separate from the 2026 sanatoria still under discussion, Italy already introduced a narrower set of measures in 2024: Decree-Law No. 69 of May 29, 2024, known as the Decreto Legge Salva Casa or, loosely, the “save the home” decree, converted with amendments into Law No. 105 of July 24, 2024. It amended Italy’s Building Code, DPR 380/2001, directly. It is the clearest recent statement of where Italian law draws the line between a defect that can be regularized and one that cannot, which is the practical question behind most searches for illegal construction in Italy.
The measures address discrepancies between a property’s approved plans and its built condition, from minor non-structural differences such as internal walls, windows, or doors that do not match the original permit, through to certain more substantial variations. They do not extend to work built in the total absence of a building permit: a villa with a pool built with no permit at all falls outside their scope and cannot be regularized through this route.
A cutoff applies to minor dimensional deviations, in height, setbacks, volume, or covered surface. The more generous tolerances apply only to work actually carried out on or before May 24, 2024, and only where the deviation falls within defined limits. Work completed after that date remains under the earlier, narrower regime. The date attaches to when the work was done, not to the age of the paperwork, which is the distinction buyers most often get wrong.
The same decree eased several adjacent rules: it extended permit-free installation of removable panoramic glazing, already allowed on balconies and loggias since 2022, to porticos; brought retractable sun and weather awnings, including pergola-style and bioclimatic ones, into permit-free works; and simplified changes to a property’s registered use.
These provisions are still in force, but they are not a blanket guarantee. Whether a specific irregularity qualifies, and on what terms, depends on the property’s documented history and on implementing rules that have continued to develop since 2024. A geometra, notary, or property lawyer should confirm current eligibility before you rely on it, and before any preliminary contract is signed.
Energy Efficiency: The 2030 Timeline Is Now a Buying Factor
The EU’s updated EPBD, transposed into Italian law with a 2026 deadline, sets binding targets that directly affect property values. According to Idealista’s analysis of the directive, by 2030, 15% of the least energy-efficient properties in Italy must reach at least energy class E, and class D by 2033. Italy has not mandated that sellers upgrade a property before listing it — 2026 is a transposition deadline, not a renovation deadline — but the practical consequence is clear: properties rated F or G are increasingly difficult to finance and less competitive on resale.
For foreign buyers targeting Rome, this means energy class should now be a due diligence checkpoint, not an afterthought. If you are evaluating apartments in central neighborhoods, check our guide to the best Rome neighborhoods to buy in 2026, where building stock and energy profiles vary considerably by district. The same checks apply to the apartments listed across Italy, where period and construction type vary as much between buildings as between districts.
Who Can Still Buy: Reciprocity Rules Remain Unchanged
On ownership eligibility, the 2026 rules have not changed the fundamental framework. EU citizens buy freely. Non-EU nationals — including Americans and British post-Brexit — can purchase under the principle of reciprocity: their home country must permit Italian citizens to buy property on equivalent terms. Both the US and UK satisfy this condition. Non-residents do not need Italian residency to buy; a valid passport and a codice fiscale (Italian tax code) remain the baseline requirements.
Practical Checklist for Foreign Buyers in 2026
- Verify stato legittimo before signing any preliminary contract — request all historical building permits and check for undeclared works.
- Check the energy performance certificate (APE) — class D or above is the emerging standard for bankable, resaleable assets.
- Do not rely on the sanatoria — legislative discussions are ongoing but no blanket amnesty is in force.
- Engage a bilingual notary or attorney — Italian law requires that non-Italian-speaking buyers have a qualified translator present at the deed signing.
- Assess rental compliance separately — if you intend to generate income from the property, short-term rental regulations at municipal level add another layer of requirements. Our guide to short-term rental income in Rome covers what yields are realistic and what licensing is now required.
The Bottom Line
Italy’s 2026 regulatory environment is more transparent than it was five years ago, but it is also less forgiving of shortcuts. Foreign buyers who conduct rigorous due diligence — on building legality, energy class, and permitted use — are better positioned than ever. Those who skip these steps face the same risks that have always existed in Italian property: irregular works, blocked sales, and unexpected remediation costs. The rules are clearer. The obligation to read them carefully is yours.
