Verification of stable cohabitation

Verification of stable cohabitation is an increasingly sought-after investigative activity in civil, property and administrative matters. Proving actual cohabitation can be decisive in obtaining rights, accessing benefits or supporting litigation.

Phersei provides professional services for the verification of stable cohabitation, with investigations carried out discreetly, lawfully and documented through reports that can be used in court.

What does stable cohabitation mean?

Stable cohabitation, also known as cohabitation more uxorio, refers to a stable relationship between two people who live as a couple without being married.

To be legally relevant, cohabitation must have specific characteristics:

• continuous cohabitation
• stability of the emotional bond
• sharing of daily life
• objective elements that demonstrate a lasting relationship over time

What is meant by a stable cohabiting person? It is essential to distinguish between registered cohabitation, i.e. officially registered with the local authority, and de facto cohabitation, i.e. real and substantial cohabitation, even in the absence of formal registration. This is the condition that usually requires investigative checks.

Regulatory framework: cohabitation and legal protection

The legal framework governing de facto cohabitation is regulated by
Law No. 76 of 20 May 2016 (known as the Cirinnà Law), which recognises the legal status of unmarried cohabiting couples.

The law defines a de facto couple as two adults:

• who are in a stable relationship
• who live together and reside in the same property
• who are not bound by marriage or civil partnership with other persons.

Proof of cohabitation can be decisive in areas such as:

• property rights between cohabitants
• inheritance and inheritance protection
• assignment of the family home
• takeover of rental contracts
• access to tax benefits and concessions
• civil litigation.

In these contexts, proof of stable cohabitation requires objective evidence and verifiable documentation. This is where professional investigative work comes in.

When is it necessary to ascertain stable cohabitation?

Verification of stable cohabitation can be a decisive step in many personal, legal and administrative situations.
Private citizens, law firms and companies request this verification when it is necessary to objectively demonstrate the existence — or absence — of actual cohabitation.

In family and property matters, verification is often decisive in separation proceedings or in the termination of cohabitation, as well as in inheritance disputes and issues related to the allocation of the family home. In these contexts, proving the true nature of the relationship between two people can affect the recognition of property rights and legal protections between cohabitants.

From a fiscal and administrative point of view, verification of cohabitation is frequently required in order to access bonuses, concessions and tax deductions, or in the context of checks on residence and family composition. Public bodies and administrations may request objective evidence when inconsistencies or statements requiring verification arise.

Evidence of cohabitation also plays a central role in legal proceedings and civil litigation. It may be necessary in civil cases, in property disputes or when it is necessary to verify the truthfulness of statements made by one of the parties. In such cases, gathering solid and documentable evidence becomes essential in order to effectively support a defence strategy.

How do you prove stable cohabitation?

Proving stable cohabitation means providing objective and verifiable evidence attesting to the existence of an ongoing relationship between two people who share their daily lives and home on a permanent basis.

A formal declaration or a simple coincidence of registered residence is not sufficient: what matters is actual cohabitation, understood as a real and lasting sharing of life.

Evidence to prove stable cohabitation can be constructed through a coherent set of factual findings, including:

• evidence of continuous cohabitation in the same property;
• stability of presence in the home over time;
• sharing of daily habits and living spaces;
• documentary and administrative evidence consistent with cohabitation;
• objective, observable and verifiable evidence.

In legal and administrative matters, the strength of evidence depends on the quality and consistency of the information gathered. For this reason, when cohabitation must be formally proven — for example, in civil proceedings, property disputes or tax audits — it is essential to rely on a professional investigation.

An investigative inquiry allows evidence to be gathered in a lawful, structured and documentable manner, transforming factual circumstances into evidence that can be used in court.

How can you prove cohabitation with different residences?

Cohabitation can exist even when two people are officially registered as residing in different properties.
In fact, registered residence is not the only factor that determines the existence of a stable cohabitation: what matters is the actual and continuous sharing of daily life.

In legal terms, cohabitation is assessed on the basis of substantive rather than purely formal elements. It is therefore possible to prove a cohabiting relationship even in the absence of a joint residence, provided that objective and consistent evidence emerges.

Among the elements that can help prove cohabitation with different residences are:

• regular and prolonged presence at the same address
• stability of residence over time
• sharing of living space and daily life
• documentary evidence consistent with life as a couple
• observable and verifiable factual evidence.

These situations are common, for example, when one of the partners formally maintains a separate residence for tax, work or personal reasons.

In cases where formal proof is required — such as in civil proceedings, property disputes or administrative checks — an investigative assessment allows the actual cohabitation to be documented objectively, going beyond purely registry data.

The Phersei methodology for ensuring stable cohabitation

Investigations are conducted using rigorous methods and in full compliance with regulations.

1. Preliminary analysis of the case

We evaluate objectives, legal context and available information to define the investigative strategy.

2. Assessment activities

We carry out objective and documentable checks, including:

• verification of domicile and actual residence
• observation of daily habits
• verification of continuous cohabitation
• documentary and administrative checks
• collection of photographic and descriptive evidence

All activities are carried out in compliance with privacy regulations and applicable laws.

3. Legally valid investigative report

At the end of the investigation, we provide a technical report containing:

• a description of the activities carried out
• a chronology of the investigations
• supporting documentation
• a final investigative assessment

The report is structured so that it can be used in legal and administrative proceedings.

If you need to prove or verify cohabitation for legal, financial or administrative reasons, contact Phersei.