Joint Borrower Sole Proprietor (JBSP) Mortgages Sleaford

Specialist advice on JBSP mortgages in Sleaford and across Lincolnshire.

Need family help to buy? JBSP mortgages explained

A Joint Borrower Sole Proprietor (JBSP) mortgage lets a parent or relative go on the mortgage without being on the property deeds. This boosts affordability while keeping ownership (and Stamp Duty implications) with the main buyer.

How it works:

Up to four people can be on the mortgage, but only the main buyer is named on the property title.
Affordability is based on combined incomes, helping first-time buyers and younger earners borrow more.
The additional borrower has no ownership rights but shares responsibility for repayments.

JBSP mortgages are often compared with gifted deposit options or first-time buyer mortgages. For impartial background, see MoneyHelper’s guide to joint mortgages.

At Spolton Mortgages, we’ll confirm if JBSP is the best fit or if alternatives like complex mortgage advice or low deposit mortgages work better for your situation.

Unbiased Advice

Dedicated to providing trusted advice, we believe financing your home should be exciting and stress-free. Here’s just some of the lenders we work with;

We access the whole of the mortgage market to find the best mortgage to suit your needs.

Independent guidance for JBSP mortgages

Whole-of-market: Access to lenders that offer JBSP products.
Stamp Duty clarity: We explain how JBSP avoids second home SDLT in most cases.
Clear roles: We outline what responsibility “joint borrower, sole proprietor” means in practice.
Local insight: Experience helping families across Sleaford, Lincoln, Boston, Grantham and RAF bases.
Linked advice: We’ll compare JBSP with gifted deposit and first-time buyer routes.

How we manage JBSP applications

We make sure everyone involved understands their role, then manage the application through to completion.

Assess & explain

We review incomes, explain responsibilities, and confirm whether JBSP is right for you.

Match & apply

We approach lenders that accept JBSP, compare options, and submit a clear application.

Progress & complete

We handle underwriter queries, valuations and legal steps, keeping all parties updated.

How JBSP mortgages fit local buyers in Lincolnshire

Property values across Lincolnshire can stretch affordability for single incomes. ONS data (July 2025) shows average prices of £237,000 in North Kesteven (Sleaford) and £184,000 in Lincoln. Using family income through a JBSP mortgage can bridge this gap.

First-time buyers: Parents can support children in Sleaford, Lincoln or Grantham without co-owning the property.
RAF families: Around Cranwell and Waddington, JBSP can help service personnel buy earlier while family income supports the mortgage.
Commuter towns: Areas like Newark and Stamford, where prices are higher, often see JBSP used to boost affordability.

We make sure all parties understand the responsibilities before proceeding.

We are family

Spolton Mortgages is a family mortgage broker founded by Nick and Kasia Spolton.

From our office in Sleaford, we provide mortgage and mortgage protection advice.

Well-known, and respected for providing trusted advice, we started by helping people find mortgages in Lincoln, Sleaford, and throughout Lincolnshire. Now we find ourselves helping people across the whole of the UK.

Our carefully selected panel of insurance providers

What our customers think

Useful Links

Trusted resources for JBSP and joint mortgages:

MoneyHelper – Joint mortgages explained

GOV.UK – Stamp Duty Land Tax

FCA – Mortgage Conduct of Business (MCOB) rules

Which? – Joint mortgages

Citizens Advice – Getting a mortgage

FAQs

Who is responsible for the repayments?

All borrowers named on the mortgage are jointly responsible, even if only one owns the property.

Will parents pay extra Stamp Duty under JBSP?

Usually not. Because they aren’t on the property deeds, JBSP avoids second home SDLT. We’ll confirm this with your solicitor.

Can JBSP mortgages be used with government schemes?

Some lenders allow it, but it varies. We’ll check if JBSP is compatible with Help to Buy or First Homes.

Are JBSP mortgages widely available?

Fewer lenders offer them than standard mortgages, but we have access to those that do.