From the team behind Hampstead Renovations · Est. 2009 · Learn more
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Side-Return Extension in Chelsea

Infilling the side return to create open-plan kitchen-diners. Structural steelwork, foundations, drainage, and full build from planning to handover.

£35,000–£80,0008–14 weeksSW3

What does side-return extension involve?

Infilling the side return to create open-plan kitchen-diners. Structural steelwork, foundations, drainage, and full build from planning to handover.

In Chelsea SW3, properties are predominantly period terraces & mansion flats, which can present specific considerations for this type of work. Chelsea falls within a conservation area managed by Kensington & Chelsea Council, which may require additional consents for external works. Chelsea's residential character ranges from the artists' studios and Queen Anne cottages of Cheyne Walk to the grand Victorian terraces of Markham Square and Paultons Square.

Our builders are experienced with the particular demands of properties in Chelsea and provide a detailed scope of work and written quote before starting any job. All work is fully insured and guaranteed.

Cost of side-return extension in Chelsea

Typical cost range: £35,000–£80,000

Prices for side-return extension in Chelsea SW3 depend on the scope of work, access, property type, and specification. The range above reflects typical jobs in the area. We always provide a detailed written quote — confirmed before work begins — with no hidden charges.

How long does side-return extension take?

Typical timeframe: 8–14 weeks

Timescales can vary depending on the complexity of the job and any access constraints. For properties in Chelsea, we schedule work to minimise disruption and confirm the full timeline before starting.

Frequently asked questions

How much does side-return extension cost in Chelsea?
Typical costs for side-return extension in Chelsea SW3 range from £35,000–£80,000. The final price depends on the scope of work, access, and specification. We provide a detailed written quote before any work begins.
How long does side-return extension take in Chelsea?
Side-Return Extension in Chelsea typically takes 8–14 weeks. Timescales can vary depending on the complexity of the work and any access constraints specific to the property. We confirm the schedule before starting.
Do you need planning permission for side-return extension in Chelsea SW3?
Whether planning permission is required for side-return extension in Chelsea depends on the property type, conservation area status, and scope of work. We advise on all consent requirements during the quoting process and handle applications where needed.

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