Guarantor and JBSP Mortgages for Bad Credit Buyers With Little or No Deposit

If you have adverse credit and limited savings, buying a home can feel out of reach. While most lenders expect both a deposit and a strong credit history, there are situations where family support can strengthen an application.

Guarantor and JBSP mortgages for bad credit are designed to help some buyers who may not qualify through a standard mortgage application. Although they are not suitable for everyone, they can provide an alternative route where affordability or deposit requirements would otherwise make borrowing difficult.

This guide explains how guarantor mortgages and Joint Borrower Sole Proprietor (JBSP) mortgages work, how lenders assess applicants with bad credit, and what to consider before applying.

What is a guarantor mortgage?

A guarantor mortgage allows another person—usually a close family member—to support your mortgage application by agreeing to cover repayments if you are unable to do so.

The guarantor does not usually become an owner of the property, but they accept legal responsibility under the terms of the mortgage agreement.

Depending on the lender, the guarantor may:

• Use their income to strengthen affordability.
• Offer savings as security.
• Provide security against their own property.

Each lender has its own eligibility criteria, so arrangements can vary considerably.

What is a JBSP mortgage?

A Joint Borrower Sole Proprietor (JBSP) mortgage allows multiple people to be named on the mortgage while only one person owns the property.

This arrangement is commonly used where parents or close relatives help improve affordability without becoming legal owners.

Unlike a guarantor mortgage, all borrowers are jointly responsible for the mortgage repayments, even though ownership remains with the sole proprietor.

JBSP mortgages have become an increasingly popular alternative to traditional guarantor products because they can improve borrowing capacity while avoiding some of the legal complications associated with joint ownership.

Can you get a guarantor or JBSP mortgage with bad credit?

Yes, although approval depends on several factors.

Lenders will assess:

• The type of adverse credit.
• How recently it occurred.
• Your current financial position.
• The guarantor’s or joint borrower’s financial strength.
• The overall affordability of the mortgage.

Having family support does not automatically overcome poor credit, but it can reduce the lender’s overall risk where the rest of the application is strong.

Can these mortgages help if you have little or no deposit?

Potentially, yes.

Some lenders offer family-assisted mortgage products where savings or property owned by a family member provide additional security instead of a traditional deposit.

However, genuine no deposit mortgages remain uncommon, particularly for applicants with adverse credit.

In many cases, even a modest 5% deposit significantly increases lender choice and may improve the available interest rate.

What types of bad credit will lenders consider?

Every lender has different criteria, but some may consider applicants with:

• Missed payments.
• Defaults.
• County Court Judgments (CCJs).
• Debt Management Plans.
• Previous bankruptcy.
• Historic financial difficulties that have since been resolved.

Older credit issues that have been followed by a sustained period of responsible financial management are generally viewed more favourably than recent or ongoing problems.

Our guides on Can I Get a Mortgage After Bankruptcy? :contentReference[oaicite:0]{index=0} and Can You Get a Mortgage with a Debt Management Plan? :contentReference[oaicite:1]{index=1} explain how these situations are commonly assessed by lenders.

Who can act as a guarantor or joint borrower?

Most lenders expect the supporting applicant to be a close family member, such as:

• Parents.
• Step-parents.
• Grandparents.
• Siblings.
• In some cases, other close relatives.

The supporting person will usually need:

• A strong credit history.
• A stable income.
• Good affordability.
• To meet the lender’s age requirements.

Some lenders also require the guarantor or joint borrower to obtain independent legal advice before completion.

How do lenders assess affordability?

Affordability remains one of the most important parts of the application.

Lenders review:

• Employment income.
• Self-employed earnings where applicable.
• Existing financial commitments.
• Household expenditure.
• Credit commitments.
• Future affordability under higher interest rates.

For JBSP mortgages, lenders may include the income of all borrowers when calculating affordability, subject to their lending policy.

What documents will be required?

Both the applicant and the guarantor or joint borrower will normally provide documentation.

This often includes:

• Proof of identity.
• Proof of address.
• Payslips or income evidence.
• Bank statements.
• Details of existing credit commitments.
• Evidence relating to any adverse credit.

Bank statements are particularly important because they demonstrate day-to-day financial management. Our guide on What Do Mortgage Lenders Look for on Bank Statements? explains what underwriters typically review. :contentReference[oaicite:2]{index=2}

What are the advantages of guarantor and JBSP mortgages?

Potential benefits include:

• Improved affordability.
• Access to lenders that may otherwise decline the application.
• The possibility of purchasing sooner.
• Support for buyers with limited savings.
• Assistance for applicants with complex financial circumstances.

These products may also help first-time buyers whose incomes alone are not sufficient to meet standard affordability requirements.

What are the potential disadvantages?

These mortgages also involve important considerations.

• The guarantor or joint borrower accepts significant legal responsibility.
• Their future borrowing capacity may be affected.
• Missed mortgage payments could affect everyone’s credit record.
• Lender eligibility criteria can be more restrictive.
• Independent legal advice is often recommended.

Anyone considering acting as a guarantor or joint borrower should fully understand their obligations before entering into the agreement.

How can you improve your chances of approval?

Preparation can make a significant difference.

• Review your credit reports before applying.
• Resolve any incorrect information.
• Reduce outstanding debts where possible.
• Avoid unnecessary credit applications.
• Save a deposit if you can, even if only a small one.
• Prepare all supporting documentation in advance.

Applying to lenders whose criteria match your circumstances is often more important than making multiple applications.

Frequently Asked Questions

What is the difference between a guarantor mortgage and a JBSP mortgage?

A guarantor agrees to support the mortgage if repayments cannot be made, while a JBSP mortgage includes multiple borrowers on the mortgage, with only one person owning the property.

Can I get a JBSP mortgage with bad credit?

Possibly. Some lenders will consider applicants with adverse credit depending on the nature of the issues, affordability and the financial position of the other borrowers.

Can these mortgages be arranged with no deposit?

Some family-assisted products may allow this, but genuine no deposit mortgages remain relatively uncommon, especially where bad credit is involved.

Does the guarantor own part of the property?

Not usually. Ownership depends on the specific mortgage arrangement, but guarantors generally do not become legal owners.

Will a larger deposit improve my options?

Yes. Even a modest deposit often increases lender choice and may lead to more competitive mortgage products.

Final thoughts

Guarantor and JBSP mortgages can provide valuable alternatives for buyers with adverse credit and limited savings, but they are specialist products that require careful consideration.

The right option depends on your credit history, affordability, available family support and the specific criteria of individual lenders. Preparing thoroughly and understanding the responsibilities involved can improve your chances of a successful application.

You can learn more about adverse credit, affordability assessments and mortgage preparation in our related guides. If you want personalised advice, speaking to a regulated mortgage adviser may help.

This guide provides general information only. Personalised mortgage advice should always come from a regulated mortgage adviser.