In Brief (TL;DR)
We analyze the role of the third-party mortgagor, who offers their property as collateral for a mortgage granted to another person, evaluating the risks and benefits.
This choice, while offering decisive help to the borrower, exposes the guarantor to considerable risks, including the possible loss of their own property.
Analyzing the risks and benefits of this decision is crucial for the guarantor, who makes their asset available to support the debtor.
The devil is in the details. 👇 Keep reading to discover the critical steps and practical tips to avoid mistakes.
Buying a home is a fundamental step, but the path to getting a mortgage can often be complex. Banks require solid collateral that not everyone, especially younger people or those with non-traditional jobs, can provide. In this scenario, a figure as traditional as it is current emerges: the third-party mortgagor. This is a person who, driven by a bond of trust, offers their own property as collateral for another’s debt, usually a child or relative. This generous act opens the door to credit but involves specific responsibilities that are crucial to fully understand before making such an important choice.
This figure, governed by the Italian Civil Code, represents a bridge between the Mediterranean tradition of family support and the needs of an ever-evolving real estate and credit market. Understanding who a third-party mortgagor is, what they do, and the risks they face is essential to turn an act of trust into a safe and informed opportunity for all parties involved: the debtor, the bank, and, of course, the guarantor.

Who is a Third-Party Mortgagor
A third-party mortgagor is an individual who, despite not being the primary debtor, agrees to place a mortgage on their own property as collateral for a loan taken out by another person. Their role is regulated by Articles 2868 and following of the Italian Civil Code. In practice, they do not sign the mortgage agreement and are not required to pay the monthly installments; their role is limited to “lending” their property as a shield for the bank. If the borrower were to become insolvent, the lending institution can claim the property offered as collateral. This intervention is crucial when the applicant’s collateral is not considered sufficient by the bank, making it possible to grant a loan that would otherwise be denied.
Difference Between a Third-Party Mortgagor and a Guarantor: A Crucial Distinction
The third-party mortgagor is often confused with a guarantor, but the two roles have substantial differences. The key distinction lies in the nature of the liability. The third-party mortgagor offers real collateral, limiting their exposure to only the value of the mortgaged property. In case of the debtor’s insolvency, the bank can only seize that specific asset. A guarantor, on the other hand, provides a personal guarantee. This means they are responsible for the debt with all their assets, present and future, without limit. Their liability is therefore much broader and potentially riskier than that of the third-party mortgagor.
Why Use This Figure: Between Tradition and Innovation
The choice to involve a third-party mortgagor is rooted in the Mediterranean culture of mutual family support. It is a gesture that combines tradition and innovation, responding to the challenges of the current market. The most common case is that of a parent helping their child buy their first home, offering their own property to strengthen the mortgage application. This solution becomes decisive for young people with precarious work contracts or for those who do not have the necessary liquidity to cover the down payment. Furthermore, offering additional collateral can improve the loan terms, for example, by lowering the LTV (Loan to Value) ratio and, consequently, obtaining a more favorable interest rate. It is a solution that promotes access to credit and helps achieve important life goals.
The Risks for the Third-Party Mortgagor
Taking on the role of a third-party mortgagor is an act of great trust, but it is not without significant risks. The main danger is concrete and severe: the loss of ownership of the property. If the primary debtor stops paying the mortgage installments, the bank has the right to initiate foreclosure proceedings on the property given as collateral. This means the property can be seized and sold at auction to satisfy the bank’s credit. Although the third-party mortgagor is not personally the debtor, their real estate asset is directly exposed. To avoid foreclosure, the third-party mortgagor has the option to pay the debt on behalf of the borrower, thereby acquiring the right of subrogation, which is the right to be reimbursed by the original debtor.
The Benefits for the Debtor and the Bank
The involvement of a third-party mortgagor creates a virtuous cycle of benefits for both the mortgage applicant and the lending institution. For the debtor, the most obvious benefit is the ability to access financing that would otherwise be denied. The presence of solid collateral, such as a second property, increases their creditworthiness. For the bank, the collateral offered by the third-party mortgagor drastically reduces the risk of the transaction. The mortgage on an additional asset makes the loan more secure and justifies granting more favorable contract terms, such as lower interest rates or higher loan amounts. This collateral structure strengthens trust between the parties and facilitates the positive conclusion of the mortgage agreement.
The Role of the Notary and the Deed of Grant
The establishment of the collateral by the third-party mortgagor is a formal act that requires the mandatory involvement of a notary. The third-party mortgagor must participate in the signing of the mortgage deed not to assume the debt, but solely to grant the mortgage on their property and authorize its registration in the Land Registry. This step is essential for the legal validity of the entire transaction. The notary is responsible for informing the third-party mortgagor in detail about the nature of the commitment they are making and the associated risks, ensuring that their choice is fully informed. The notarial deed acts as a safeguard, ensuring transparency and legal certainty for all figures involved.
Conclusion

The role of the third-party mortgagor is an effective and established solution for overcoming obstacles in accessing real estate credit, especially in an economic context that requires increasingly robust collateral. It is a mechanism that balances the tradition of family support with modern financial needs, offering a concrete opportunity to those who wish to buy a property but lack sufficient independent collateral. However, it is a role that involves direct financial liability and a significant risk: the possible loss of one’s own home. For this reason, the decision to act as a third-party mortgagor must be weighed with extreme care, with a full understanding of all legal and financial implications, preferably with the support of professional advice, to ensure that a generous act does not turn into a future problem.
Frequently Asked Questions

A third-party mortgagor is a person who, despite not being the primary debtor, offers their own property as collateral for a mortgage requested by another individual. This figure typically intervenes when the mortgage applicant (often a child or relative) does not have sufficient real collateral for the bank. Therefore, the third-party mortgagor does not take on the debt but consents to a mortgage being placed on their property, allowing the debtor to obtain the loan.
The main risk for a third-party mortgagor is the loss of ownership of the property offered as collateral. If the primary debtor fails to pay the mortgage installments, the bank can initiate foreclosure proceedings and sell the property at auction to satisfy its credit. Although not personally liable for the debt, the third-party mortgagor is liable with the mortgaged property. However, if they are subject to foreclosure, they have the right of subrogation, meaning they can demand reimbursement from the debtor for the value of the lost property.
The fundamental difference lies in the type of liability. A third-party mortgagor offers *real collateral*, limiting their liability exclusively to the value of the mortgaged property. In case of insolvency, the bank can only go after that specific asset. A guarantor, on the other hand, offers a *personal guarantee*: they are liable with all their present and future assets, not just a single property. Theirs is a broader liability not tied to a specific property.
If the debtor fails to pay the installments, the bank can initiate debt recovery procedures. Initially, it will apply default interest. If the non-payment persists (usually after several missed payments), the bank can terminate the contract and demand immediate repayment of the entire outstanding debt. At this point, it can proceed with the seizure and foreclosure sale of the property mortgaged by the third-party mortgagor to recover the amount due.
Yes, a third-party mortgagor can sell their property, but the mortgage “follows” the asset. This means that whoever buys the house buys it with the mortgage still registered, unless the debt is paid off and the mortgage is canceled. The buyer would then be in a position to face foreclosure if the original debtor failed to pay the mortgage. For this reason, selling a property with a mortgage securing someone else’s debt is a complex and uncommon transaction.



Did you find this article helpful? Is there another topic you'd like to see me cover?
Write it in the comments below! I take inspiration directly from your suggestions.