House extensions Kensington

Several factors influence the cost of a Kensington house extension, including the type of extension, structural work required and site constraints. Victorian terraces often involve load-bearing wall removal, steel beams and restricted access, all of which impact cost. Planning requirements, party wall agreements and specification choices such as glazing, joinery and materials also play a significant role in the overall budget.

For most house extensions in Kensington, budgets of £30,000 or £40,000 are unlikely to be sufficient. Even smaller extensions typically involve structural works, foundations, glazing and compliance with building regulations. In period properties, additional complexity such as access constraints and integration with existing layouts further increases cost. A realistic budget depends on scope, but most projects require a significantly higher investment.

Planning permission depends on the property and scope of work, but many homes in Kensington fall within conservation areas or have restrictions that limit permitted development rights. Rear extensions and side returns may still be possible, but require careful design and compliance with local authority guidelines. We work alongside architects and consultants to ensure proposals meet planning requirements and are delivered correctly.

In most cases, yes — but it depends on the property type, existing structure and planning constraints. Victorian terraces, stucco-fronted homes and converted flats each have different limitations. Factors such as conservation area status, neighbouring properties and existing extensions all influence what is possible. A site-specific assessment is essential to determine the most suitable extension approach.

For period properties in Kensington, rear extensions and side return extensions are typically the most effective. These allow you to open up the ground floor, create an open-plan kitchen and improve natural light. Wraparound extensions can combine both approaches where space allows. The right solution depends on the layout, structure and planning constraints of the individual property.

Side return extensions are particularly well suited to Victorian terraces in Kensington, where narrow layouts often leave unused space along the side of the house. Extending into this area can significantly widen the kitchen and improve ground floor flow. Structural alterations and careful detailing are required, but the result is a more practical and light-filled living space.

Yes, many Kensington house extensions are designed around open-plan kitchen and living spaces. This typically involves removing load-bearing walls and installing structural steel to open up the ground floor. Rear extensions with glazing or rooflights are often used to bring in natural light and connect the interior to the garden, creating a more functional family space.

The timeline for a Kensington house extension depends on the complexity of the project. Smaller extensions may take several months, while larger or more structurally involved schemes can take longer. The process includes planning, approvals, structural works, construction and fit-out. Factors such as access, procurement and coordination with other professionals can also influence the programme.

All house extensions involve some level of disruption, particularly in tightly built Kensington streets. However, careful planning and site management can minimise the impact. We coordinate deliveries, manage access and work considerately around neighbouring properties. Where possible, works are phased to reduce disruption, while maintaining control over quality and progress throughout the build.

Well-designed house extensions can significantly increase the value of Kensington properties, particularly when they improve layout, light and usability. Open-plan kitchen extensions and well-integrated rear additions are especially desirable. The key is to ensure the extension complements the existing property and is delivered to a high standard, both structurally and in terms of finish.

Yes, we regularly work with architects, interior designers and consultants on Kensington house extensions. We act as the construction partner, delivering the project on site while coordinating structural works, sequencing and build quality. This ensures the design intent is carried through into the finished result, with clear communication and a single point of responsibility during construction.