Independent Legal Advice for Joint Borrower Sole Proprietor (JBSP) Mortgages

What is a Joint Borrower Sole Proprietor (JBSP) mortgage?

A Joint Borrower Sole Proprietor mortgage lets someone — often a parent, step-parent or other family member — join a mortgage to boost the main applicant's borrowing power, without being named on the title deeds. The 'sole proprietor' owns the property; the 'joint borrowers' share full responsibility for the mortgage repayments. JBSP arrangements are commonly used to help first-time buyers whose income alone would not stretch to the home they need.

It is a generous thing to do, but it is also a serious legal commitment. That is why lenders ask the supporting borrower to take independent legal advice (ILA) before completion.

Why does the lender require independent legal advice?

As a supporting borrower on a JBSP mortgage, you take on all the obligations of the loan but receive none of the ownership. The lender wants to be sure you understand this imbalance, that you are signing freely and without pressure, and that you cannot later claim you did not know what you were agreeing to. A certificate of independent legal advice — signed by a legal adviser who acts for you alone, not for the lender or the buyer — provides that assurance and protects everyone involved.

Most JBSP lenders will not release funds until they have received the ILA certificate, so it is worth arranging your appointment early to keep your completion date on track. Our certificates are prepared to satisfy standard lender requirements, and if your lender has its own form of certificate we will complete that instead — just email info@ilahub.com or mention it when you book.

The main risks, in plain English

None of this is meant to alarm you — thousands of families use JBSP mortgages successfully every year. But before you sign, you should clearly understand that:

• You are fully liable for the whole mortgage. If the main borrower misses payments, the lender can pursue you for the full amount — not just a share.
• You get no ownership in return. Your name is on the mortgage, not the deeds, so you have no automatic right to the property or any rise in its value.
• Your credit rating is on the line. Missed payments affect your credit file just as if it were your own mortgage.
• It can limit your own borrowing. Lenders will count the JBSP mortgage as your debt when you apply for credit or a mortgage of your own.
• Getting out is not automatic. You usually stay liable until the property is sold, the mortgage is repaid, or the lender agrees to remove you — typically by remortgage.

Who typically needs ILA for a JBSP mortgage?

Most commonly it is parents helping a child buy their first home, but we also regularly advise siblings, grandparents, other relatives and partners joining a mortgage without going on the deeds. If more than one person is supporting the borrower — for example, both parents — each supporting borrower normally needs their own advice and certificate, and our fixed fee applies per person. The property owner themselves does not usually need ILA unless the lender or their solicitor asks for it.

How ILA Hub's process works

Everything is done remotely, from anywhere in the UK — nothing to print or post. You book online, verify your ID online beforehand, and meet your legal adviser by secure video call at a time that suits you, Monday to Friday, 9am to 7pm. After the appointment your signed certificate is emailed to you (and your solicitor, if you wish) the same working day.

Fees are fixed and per person: Standard is £150 with an appointment within 2–3 working days, Fast Track is £250 with appointments from the next working day, and Priority Same-Day is £350 for the earliest available slot, including same day. Every tier gets the same-working-day certificate — the higher fees simply secure an earlier appointment. These fees apply to loans up to £2,000,000; larger matters can be arranged individually. See our pricing for full details, or book your JBSP appointment now.