Concrete Foundations in Westminster built for demanding sites and premium homes. From strip and pad bases to engineered raft foundations, we deliver compliant, reinforced footings with tidy, controlled working.
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Whether you’re extending a property in Victoria or upgrading a lower-ground space near Pimlico, the foundation design sets the standard for everything above. We install strip foundations, pad foundations, raft foundations and wall footings to suit your build and ground conditions. Working around busy streets and sensitive boundaries is routine for us in SW1. Our team coordinates excavation, concrete pours and inspections so your project stays on track.
The City of Westminster has a mix of Georgian townhouses, mansion flats and luxury apartments, often with tight access and shared structures. We’re experienced with basement-adjacent works, party wall considerations, and foundations for side returns and rear extensions. Where older masonry and historic layouts are present, we plan carefully to protect neighbouring properties. If you’re close to Westminster Abbey or St James’s Park, we can schedule deliveries and pours to reduce disruption.
We start with a site visit, discuss loads and layout, then confirm the right foundation type and depth with engineering input where required. Every stage is built to Building Regulations, including reinforcement, concrete specification and curing times, with clear photo updates. We keep excavations neat, manage spoil removal, and maintain safe access for residents and trades. Homeowners choose us for reliable communication, clean working practices and foundations that pass inspection first time.
Westminster projects often involve restricted access, controlled parking, and strict delivery windows, especially around Whitehall and SW1. We plan plant size, barrowing routes and concrete pour logistics to suit narrow mews and busy roads. Ground conditions can vary across the borough, so we allow for trial holes, deeper excavations or engineered solutions where needed. Our approach reduces risk to neighbouring structures and keeps you compliant with local requirements.
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Costs vary with depth, access, disposal, and the foundation type. As a guide in Westminster, small strip foundations for a modest extension might start around £3,000–£7,000, while larger or deeper works with reinforcement can be £8,000–£20,000+. Raft foundations and engineered solutions (including deep foundations) can rise to £15,000–£40,000+ depending on size and structural design. We provide a detailed, itemised estimate after a site visit.
Most domestic foundation packages take 3–10 working days from setting-out to pour, depending on excavation volume and access. Strip foundations for a straightforward rear extension can be completed in under a week, while raft foundations or deeper excavations may take 1–3 weeks. Timescales are affected by Building Control inspections, ground conditions, weather, spoil removal logistics, and whether engineering changes are required once trenches are opened.
Foundations themselves are usually part of a wider project, so planning permission depends on the extension or structural work rather than the concrete alone. Many home improvements can be permitted development, but Westminster has conservation areas and listed buildings where rules are tighter. Regardless of planning, Building Regulations approval and inspections are required for foundations. We liaise with your designer/engineer and Building Control, and we’ll flag any local constraints early.
We provide a 10-year warranty covering workmanship on the foundations we install, including reinforcement placement, concrete pour quality, and compliance with the agreed specification. If an issue arises due to our installation, we’ll investigate and put it right. The warranty doesn’t cover structural movement caused by external factors such as major leaks, tree-related subsidence, or changes to loads outside the original design. We keep records to support any future queries.
Options include strip foundations, pad foundations for point loads, raft foundations for weaker ground, and reinforced wall footings for retaining or boundary conditions. Concrete mixes can be specified for strength and sulphate resistance where required, and reinforcement can be detailed to suit engineering calculations. We can also incorporate starter bars for walls, holding-down bolts, and service penetrations. We’ll help you choose the safest, most cost-effective design for your layout and site constraints.
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