Guarantor loans: pros, cons and who qualifies for Rio’s first home buyers

First-time buyers in Rio de Janeiro face a steep climb as property prices hit fresh highs this winter, and many are looking to guarantor loans to get a foothold in the city’s competitive real estate market.

With average apartment prices in Zona Sul pushing R$15,000 per square metre and even one-bedrooms in up-and-coming Catete now routinely fetching over R$800,000, families are increasingly stepping in to support younger buyers. The role of guarantor loans, where a parent or relative puts up their own assets or credit history to secure a mortgage, has grown sharply over the past twelve months, according to figures provided by the Associação dos Mutuários de Habitação do Rio de Janeiro (AMH Rio).

Who uses guarantor loans, and where?

Guarantor loans are especially popular in neighbourhoods where property values are running far ahead of local incomes. In Laranjeiras, for example, AMH Rio estimates that at least 1 in 6 first-home loans written in the first quarter of 2026 involved a guarantor, a jump from 1 in 10 just a year earlier. Private banks like Itaú Unibanco and Banco do Brasil each report a double-digit increase in applications for their ‘crédito com fiador’ products, particularly for properties near main transit arteries such as Rua das Laranjeiras and Avenida Rio Branco.

But these loans aren’t for everyone. Lenders typically require both the borrower and the guarantor to demonstrate extensive, stable income and a low existing debt burden. In most cases, guarantors must own property in Rio, pass a credit check, and sometimes cannot be over 70 years old at the end of the mortgage term. This excludes a significant segment of the population, particularly those without family wealth or access to middle-class relatives.

The numbers and the risks

Recent data from Secovi Rio shows the city’s residential prices have jumped 8.7% year-on-year as of June 2026, putting added pressure on first-time buyers. In popular districts like Botafogo, the typical deposit for a starter flat now ranges from R$120,000 to R$200,000, well above the average annual salary of R$44,000 for young professionals, based on IBGE figures. The widely used Caixa Econômica Federal SBPE program only partially bridges this gap, leaving many buyers to seek help from parents willing to act as guarantors.

But taking on a guarantor loan isn’t a simple fix. If the main borrower defaults, the guarantor becomes liable for the remaining debt, and in worst-case scenarios, risks losing their own home or having wages garnished. "Many families don’t realise guarantor loans are legally binding and can damage relationships or ruin credit if things go wrong," says a housing advisor at AMH Rio (not authorised to speak on record).

Some developers in Rio, notably those with projects in the revitalised Porto Maravilha zone, have begun offering alternative options like shared equity or delayed payment schemes to lessen reliance on the traditional parental-guarantor model. However, these products often come with higher interest rates or strict use restrictions, and are usually limited to new-builds.

How to qualify and what’s next

Prospective buyers eyeing a guarantor loan for properties in areas like Copacabana or Tijuca need to prepare returns for both themselves and their intended guarantor. Most banks will want to see updated income statements, recent property tax receipts, and a detailed overview of current liabilities. The AMH Rio recommends shopping around: different banks impose different limits and some only accept specific types of collateral.

For now, with prices still climbing faster than wages, experts anticipate a continued reliance on guarantor loans for Rio’s middle class. First-time buyers should carefully weigh the risks, check all the small print, and exhaust grant options like the Minha Casa Minha Vida social housing program before asking family members to sign on the dotted line.

As the city’s housing crunch shows little sign of easing, buyers and guarantors alike are urged to get sound legal advice and run the numbers again – before making a commitment that can last decades.