Getting a joint mortgage with friends

Legally, a maximum of four people can be named on the title of a property in England and Wales. In practice most high-street lenders underwrite two applicants comfortably, a smaller group accepts three or four, and some will count four incomes but only name two borrowers.

This is why a broker matters far more for co-buying than for a standard purchase. The question isn't only 'what rate can I get', it is 'who will lend to this shape of application at all'.

Lenders typically apply an income multiple of around 4 to 4.5 times combined income, then stress-test the payment at a higher notional rate. Combining incomes lifts your borrowing power substantially, but it is rarely a straight multiplication: many lenders take 100% of the two largest incomes and a reduced percentage of the others.

Existing commitments hit the whole group. One applicant's car finance, credit card balance or student-adjacent debt reduces what everyone can borrow. Clear what you can and avoid new credit in the six months before applying.

Every borrower is liable for the entire mortgage, not just their slice. If one person stops paying, the lender pursues the others for the full amount and everyone's credit file suffers. This is the single most important fact to understand before signing.

Mitigate it with a shared contingency fund, typically three to six months of full mortgage payments held jointly, and an arrears clause in your Deed of Trust.

The usual causes are: too many applicants for that lender's policy, thin or mismatched credit files, one applicant on probation in a new job, insufficient deposit after fees, and inconsistent information across the group's paperwork.

Prepare as a unit. Run everyone's credit report early, agree the deposit figures in writing, and go to the lender with one clean, consistent story rather than four separate ones.