Is JBSP the same as a guarantor mortgage?

No. With JBSP, the supporting borrowers are full mortgage applicants whose income is assessed. With a guarantor mortgage, the guarantor provides security but their income isn't used for affordability.

Can parents be JBSP borrowers?

Yes, parents are the most common JBSP supporters. Some lenders also accept siblings and other family members.

Does JBSP affect my first-time buyer status?

No — since the supporting borrowers aren't on the title, your first-time buyer status is preserved for stamp duty purposes.

How do I remove the supporting borrower later?

Once you can afford the mortgage on your own income, you can remortgage into your sole name, removing the supporting borrower from the mortgage.

Joint Borrower Sole Proprietor Mortgages

JBSP mortgages let family members boost your borrowing power without going on the property title. We find lenders offering this powerful arrangement.

What Is a Joint Borrower Sole Proprietor Mortgage?

A Joint Borrower Sole Proprietor (JBSP) mortgage allows up to 4 people to be on the mortgage (borrowers) while only 1-2 people are on the property title (proprietors). This means parents or family members can use their income to help you borrow more, without being legal owners of the property — avoiding additional stamp duty and capital gains tax implications.

Family income boosts borrowing without title ownership
Parents avoid stamp duty surcharge on second properties
Up to 4 borrowers on the mortgage application
First-time buyer status preserved for stamp duty relief
100% fee-free specialist JBSP advice

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Your home may be repossessed if you do not keep up repayments on your mortgage.

How JBSP Works

In a JBSP arrangement, the mortgage is taken out jointly (typically by the buyer and their parents), but only the buyer is named on the property title. This means the parents are legally liable for the mortgage payments but don't own the property. It combines income for affordability while keeping the property in the buyer's name only.

Tax Advantages

Because the supporting family members aren't on the property title, they don't trigger the additional 5% stamp duty surcharge that applies to second property purchases. The buyer may also retain their first-time buyer stamp duty relief if they haven't owned property before.

Which Lenders Offer JBSP?

Not all lenders offer JBSP arrangements, but several mainstream and specialist lenders do. The maximum number of borrowers varies — some allow up to 4, others limit to 2. We know which lenders offer the most favourable JBSP terms.

Risks and Considerations

The supporting borrowers are fully liable for the mortgage if the primary borrower can't pay. This affects their own borrowing capacity for any future applications. All parties should seek independent legal advice before entering a JBSP arrangement.