How Charge Priority Works
When a loan is secured against a property, the lender registers a legal charge at HM Land Registry. The first loan secured creates a first charge; the next creates a second charge; and so on. These charges are listed in the priority register and determine the order in which creditors are paid if the property is ever sold under enforcement proceedings.
The first charge lender has the strongest security position and bears the least risk. They will be paid in full (assuming the property sells for sufficient value) before any other creditor receives a penny. The second charge lender is next, and they also typically have adequate security if the combined LTV is reasonable — say 60 to 75 per cent. A third charge lender, however, sits behind two other creditors, meaning the property must sell for enough to pay both the first and second charge lenders in full before the third charge sees any proceeds.
For this reason, lenders willing to act as a third charge typically require very low combined LTV across all three facilities — often requiring at least 30 to 40 per cent unencumbered equity to remain in the property after all charges are placed. If a property is worth £500,000 with a £200,000 first mortgage and a £100,000 second charge, total existing debt is £300,000 — 60% CLTV. A third charge lender at this LTV level would still see £200,000 of equity ahead of them, which is a more comfortable position than a standard second charge at 85% CLTV.
All existing charge holders must be notified when a new charge is registered behind them. The first and second charge lenders will not object to the third charge being placed — they are ahead in priority and their position is unaffected — but they must formally consent as part of the Deed of Postponement process. This adds administrative time to the application and requires co-operation from potentially two other lenders.
Lenders and Criteria for Third Charge Loans
The number of regulated lenders in the UK who will act as a third charge creditor is small. Most standard second charge lenders explicitly exclude applications where a second charge already exists against the property — their underwriting systems are set up to process first and second charge applications, and the additional complexity of a third charge, including the need to obtain Deeds of Postponement from two prior lenders, makes many unwilling to proceed.
Specialist lenders with appetite for third charge lending include some members of the Together Money group and a small number of specialist bridging and development lenders who operate in the commercial and semi-commercial space. Some private lenders and family offices provide third charge loans on a bespoke basis for very large amounts or complex situations, though these arrangements are outside the regulated retail market.
Rates for third charge loans are higher than second charge rates to reflect the elevated risk. Expect rates of 12 to 18 per cent for regulated third charge products in the current market. The combined cost of three layers of secured debt — a mortgage, a second charge, and a third charge — needs careful consideration. In many cases, consolidating the first and second charges into a single remortgage and then taking one new second charge is more cost-effective than adding a third charge layer.
Affordability requirements for a third charge are strict. Lenders will model the full cost of all three layers of debt and require comfortable residual income after servicing all three, plus living costs and other commitments. Many borrowers who could theoretically support the repayments on paper are declined because the affordability model produces insufficient residual income when all three debt obligations are included.
