Loan-to-Value (LTV)

Definition: Loan-to-Value (LTV) is the ratio of a mortgage loan amount to the assessed value of the property, expressed as a percentage. It is one of the most fundamental metrics in property finance and directly determines the maximum amount you can borrow. For example, if you purchase an HMO valued at £400,000 with a £100,000 deposit, the LTV is 75%. In the HMO mortgage market, most specialist lenders cap lending at 70–75% LTV, meaning investors typically need a 25–30% deposit. Lower LTV ratios reward borrowers with more competitive interest rates, better product selection, and improved chances of approval. For HMO properties, lenders apply LTV limits more conservatively than standard buy-to-let because of the specialist nature of the asset, regulatory complexity, and licensing requirements. When refinancing an HMO, the LTV is calculated against the current market valuation, which means capital appreciation can reduce your LTV over time, opening access to better rates on remortgage. Stress-testing affordability at higher rates is also tied to the LTV band.