
Based on the provided information, the principal method for increasing the height of a sofa in the UK is to replace its existing legs with a taller set. This is a common and effective modification for both aesthetic and ergonomic purposes. Specialist UK retailers, such as The Hairpin Leg Company, supply a wide variety of furniture legs in different heights, materials, and styles, including wooden and metal options. The process generally involves unscrewing the sofa's original legs and attaching the new, taller ones to the frame, ensuring the fittings are compatible. This approach allows for a permanent and structurally integrated height adjustment.
Another viable option, particularly relevant in contexts of mobility and recovery as suggested by support groups, involves the use of furniture risers. These are blocks or extenders, typically made of wood or heavy-duty plastic, that are placed directly under the sofa's existing legs. This method provides a non-permanent and often more straightforward solution for raising the seating height, which can make sitting down and standing up significantly easier. While potentially less aesthetically integrated than replacing the legs entirely, risers are a practical and accessible alternative.
When considering how to raise a sofa's height, it is crucial to evaluate the stability of the proposed solution. Whether replacing the legs or using risers, one must ensure that the sofa remains level and secure to prevent wobbling or tipping. The choice of method often depends on the desired height increase, the required permanence of the solution, and the overall design considerations of the furniture and room.


