Energy Certification of the Common Parts of an Italian Condominio

The energy performance certificate for the common parts of a condominio, known in Italy by the acronym APE, is the document that captures the energy performance of the building as a whole, distinct from the certificates covering individual units. It is not always mandatory for the entire building, but it becomes a very useful tool whenever the assembly is weighing energy retrofit works, because it provides an objective starting point against which improvements achieved through the works can later be measured.

What the building's APE is and how it differs from the unit's

The APE for an individual unit accompanies the sale or lease of an apartment and describes the energy performance of that specific home, taking into account the envelope, windows, and the heating system serving it. The APE covering a condominio's common parts has a broader scope: it assesses the building envelope as a whole, any centralized heating plant, the shared domestic hot water production system, and other elements that affect the building's overall consumption, regardless of the individual heating choices made by each owner.

When energy certification of the common parts is needed

Energy certification of a condominio's common parts becomes necessary in several practical situations: where a centralized heating system serves the entire building, when applying for tax incentives on retrofit works that require proof of an improved energy class, or when the assembly decides to equip itself with a planning tool to schedule the most effective interventions on the envelope and shared systems over time.

Even outside strict regulatory requirements, many administrators choose to have a building level APE prepared as a technical basis for guiding assembly decisions, avoiding isolated, poorly coordinated works that over time produce a weaker energy result than an organic plan would achieve.

Who prepares the certificate and how the site inspection works

The APE is prepared by a qualified, certified professional listed in the appropriate regional registers of energy certifiers, who conducts a site inspection to record the building's construction features: the type and thickness of the perimeter walls, presence of thermal insulation, type of shared windows and frames, roof characteristics, and, where present, the centralized heating plant. Based on this data the certifier calculates the energy performance index and assigns the building the corresponding class, from most to least efficient.

For complex plant configurations, such as a centralized heating system with multiple boilers or a mixed system combining district heating with independent production, the inspection takes longer and requires the administrator's cooperation to gather technical documentation, plant logbooks, and reports from previous inspections.

Why the APE is useful for energy retrofit works

When the assembly is evaluating a major intervention, whether an external insulation system, replacement of the shared windows, or an upgrade of the central heating plant, having a building level APE makes it possible to estimate the expected improvement more reliably and to compare alternative technical solutions on the basis of consistent data, rather than relying only on the qualitative assessments of the professionals involved.

A certificate updated before the works and a new one issued after their completion allow the achieved jump in energy class to be documented objectively, a requirement often needed to access specific tax incentives.

Costs and how they are shared among owners

The cost of preparing the APE for the common parts varies with the building's complexity, the number of units served, and whether a centralized plant needs to be surveyed. Since this expense concerns the whole building, it is generally split among all owners according to their ownership shares, unless the assembly agrees otherwise, and it is advisable for the administrator to collect several quotes before putting the matter to a vote.

Validity and updating of the certificate

The APE has a limited period of validity and must be renewed periodically, as well as whenever significant works on the envelope or the systems substantially change its energy performance. It is useful for the administrator to keep the certificate together with the building's technical documentation and plant logbooks, so it can be produced promptly both for inspections and whenever an individual unit is later sold.

The administrator's role in managing the process

It falls to the administrator to identify a qualified certifier, request quotes, bring the matter to the assembly with the necessary documentation, and keep the certificate on file once issued, updating it whenever works on the building require it. Orderly management of this documentation avoids scrambling for information at the wrong moment, for example when an owner needs to sell an apartment or when a tax incentive with tight deadlines becomes available. A management platform such as AmministraPro helps keep all of this documentation in a single, always accessible digital archive: the features page describes the tools for document management and technical deadlines, while the pricing section lists the plans suited to administration firms of every size.