Buying a home is a significant milestone in one’s life, but it often comes with a hefty price tag. Many aspiring homeowners find it challenging to accumulate a substantial deposit for their dream home. This is where 100% mortgages come into play, offering an alternative path to homeownership. In this blog, we’ll explore the concept of 100% mortgages, how they work, their advantages, disadvantages, and whether they are a viable option for prospective homebuyers.


What Are 100% Mortgages?


A 100% mortgage, as the name suggests, allows you to borrow the entire purchase price of your home without the need to provide a deposit. Traditionally, lenders require borrowers to contribute a deposit, typically ranging from 5% to 20% of the property’s value, to secure a mortgage. However, with a 100% mortgage, you can buy a home with no deposit, which may seem like an attractive proposition, especially for first-time buyers.


How Do 100% Mortgages Work?


  1. Guarantor Mortgages: One common form of 100% mortgage in the UK is the guarantor mortgage. In this arrangement, a family member, usually a parent, acts as a guarantor for the loan. They offer their property or savings as collateral, ensuring the lender has a safety net in case the borrower defaults on payments.


  1. Joint Borrower Sole Proprietor Mortgages: Another option is the joint borrower sole proprietor mortgage. In this scenario, a family member joins the mortgage application with the borrower, typically to increase the borrower’s income and improve their affordability. However, the co-borrower does not have any ownership rights to the property.


  1. Specialist Lenders: Some specialist lenders offer 100% mortgages, but they often come with higher interest rates and stricter terms compared to traditional mortgages. These lenders may also require additional collateral or charge higher fees.


Advantages of 100% Mortgages


  1. No Deposit Required: The most significant advantage of a 100% mortgage is that it allows buyers to enter the property market without having to save for a deposit, which can take years.


  1. Access to the Property Market: It provides an opportunity for first-time buyers and those with limited savings to get on the property ladder sooner rather than later.


  1. Family Assistance: It enables families to support their children or relatives in purchasing their first home by acting as guarantors or co-borrowers.


Disadvantages of 100% Mortgages


  1. Higher Interest Rates: 100% mortgages often come with higher interest rates compared to traditional mortgages, which can lead to higher overall costs over the life of the loan.


  1. Limited Lender Options: Not all lenders offer 100% mortgages, and those that do may have stricter eligibility criteria.


  1. Risk to Guarantors: In guarantor mortgages, the guarantor’s property or savings are at risk if the borrower defaults, potentially putting their financial stability in jeopardy.


  1. Less Competitive Terms: Borrowers with a larger deposit typically receive better interest rates and more favourable mortgage terms.


Are 100% Mortgages a Viable Option?


While 100% mortgages can be a lifeline for some aspiring homeowners, they are not without risks and limitations. It’s crucial to carefully consider your financial situation and long-term goals before opting for a 100% mortgage. Here are some key factors to consider:


  1. Affordability: Can you comfortably make the mortgage payments, including interest, insurance, and property taxes, without straining your finances?


  1. Future Financial Stability: Assess your job security and future income prospects. A sudden change in circumstances could make it challenging to meet mortgage obligations.


  1. Alternatives: Explore other homeownership schemes and government-backed initiatives like Help to Buy, Shared Ownership, or the First Homes scheme, which might offer more favorable terms.


  1. Seek Professional Advice: Consult with a mortgage advisor or financial expert to assess your suitability for a 100% mortgage and explore all available options.




100% mortgages can be a valuable tool for prospective homebuyers who lack the funds for a traditional deposit. However, they come with their own set of challenges and risks. It’s essential to thoroughly research and consider your financial situation, long-term goals, and available alternatives before committing to a 100% mortgage. Make informed decisions to ensure that home ownership is a rewarding and sustainable journey for you and your family.


Whilst we cannot offer mortgage advice, please call our property department with any other concerns you may have on 0161 850 9911.