Concrete Foundations in Kensington built for demanding sites and high-end homes. We deliver strip, pad and raft foundations to Building Regs, with engineering-led accuracy. Ideal for extensions, garden rooms and structural upgrades across W8 and W14.
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When you’re building in Kensington, the foundation work has to be exact—there’s little tolerance for movement, noise issues or delays. We install concrete bases for extensions, garden rooms and structural alterations near Kensington High Street, Holland Park and surrounding streets. From wall footings to deep foundations, we design and pour to suit the structure above. Every job is set out carefully, excavated safely and finished ready for your builder’s next stage.
The Kensington property mix—stucco townhouses, mansion blocks and period conversions—often comes with tight side access, shared walls and sensitive boundaries. We’re used to working on constrained plots in W8 and W14, where excavation and spoil removal need planning. Our concrete foundations Kensington area service accounts for older drainage runs, existing basements and variable ground build-ups. Where needed, we coordinate with structural engineers to ensure load paths and reinforcement are right first time.
We start with a site visit, levels check and scope review, then confirm the foundation type: strip foundations, pad foundations, raft foundations or reinforced wall footings. You’ll receive clear method statements, a tidy programme and inspections arranged for Building Control. Concrete is ordered to spec, poured and finished with proper curing and protection. Homeowners choose us because we communicate well, keep sites orderly and stand behind our work with a written warranty.
Kensington projects often involve restricted parking, controlled hours and careful logistics, especially near Kensington Palace and busy routes around Kensington High Street. We plan deliveries, concrete pours and waste removal to minimise disruption and keep access clear. Ground conditions can vary between made ground and firmer strata, so we size depths and reinforcement accordingly. Our concrete foundations in Royal Borough of Kensington and Chelsea work is tailored to period structures and close neighbouring boundaries.
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Costs vary with depth, access, spoil removal and the foundation type. As a guide, small pad foundations for posts or a garden room base may start around £900–£2,000. Strip foundations for an extension commonly range from £3,500–£9,000, while reinforced raft foundations can be £7,000–£18,000+. Tight access in W8/W14, underpinning needs, or engineered designs can increase budgets.
Most domestic foundation jobs take 2–7 working days from excavation to pour, depending on size and complexity. A few pads may be completed in a day or two, while strip foundations for an extension typically take 3–5 days. Raft foundations can take a week or more due to sub-base preparation and reinforcement. Timescales are affected by access, inspections, weather, and whether deeper excavations are required.
Foundations themselves are usually part of a wider project, and many rear extensions or garden structures can fall under permitted development. However, Building Regulations approval is normally required, and the Royal Borough of Kensington and Chelsea may have extra considerations for basements, party walls, conservation areas or listed buildings. We’ll help you confirm what applies, liaise with your designer/engineer, and arrange Building Control inspections so everything is signed off properly.
We provide a 10-year warranty on our concrete foundation installation, covering workmanship and structural integrity of the installed foundation elements (such as strip footings, pads, rafts and reinforced sections) when used as designed. The warranty includes issues arising from incorrect set-out, poor compaction, or improper reinforcement placement. It doesn’t cover structural changes above, third-party alterations, or ground movement outside reasonable site assumptions. We also keep records for inspections and handover.
We can install strip foundations, pad foundations, raft foundations and reinforced wall footings, selecting the right approach based on loads, soil and access. Concrete mixes can be specified for strength, sulphate resistance or faster curing where programmes are tight. Reinforcement options include rebar cages and mesh, with engineered detailing for openings and corners. We’ll review drawings, confirm levels and recommend the most practical, regulation-compliant design for your Kensington property.
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