Shed Bases in Westminster built to stay level, dry and long-lasting. Choose concrete, paving slabs, plastic grids or timber—installed with proper preparation and drainage for any size shed.
Response within 24 hours
A shed is only as good as the base beneath it, especially in SW1 where gardens can be compact and access is tight. We install shed bases across Westminster, including Victoria and Pimlico, with a clean, level finish that prevents doors sticking and floors warping. Whether you need a discreet base behind a mansion flat or a robust platform for a workshop shed, we tailor the build to your site. We’re used to working around busy streets near Westminster Abbey and St James’s Park.
Homes in the City of Westminster range from Georgian townhouses to mansion flats and luxury apartments with courtyard gardens. These properties often need careful handling of boundaries, lightwells, and shared access routes. Our team plans base sizes precisely, keeping sheds square to walls and fences while protecting paving and planting. If you’re upgrading storage for bikes, tools, or a garden office, we’ll recommend a base type that suits the load and layout.
We start with a site visit to measure, check levels, and confirm the best base construction. Ground preparation includes excavation, compacted sub-base, edging where required, and drainage considerations to keep water moving away from the shed. You’ll get clear options, tidy workmanship, and a finish that’s ready for immediate installation. Homeowners choose us for reliable scheduling, respectful crews, and a 10-year warranty for peace of mind.
Westminster sites often involve restricted access, controlled parking, and shared pathways in mansion blocks. We plan deliveries, waste removal, and working hours to minimise disruption and keep neighbours onside. Ground conditions can vary from old made-ground to compacted sub-layers under patios, so we assess stability before building. If you need shed bases westminster area solutions near Whitehall or St James’s, we adapt the method to suit the space and the substrate.




Rated 4.9/5 from over 280 verified reviews
Costs depend on size, base type, access, and how much excavation is needed. As a guide, small paving slab or plastic grid bases often start around £350–£750. Medium concrete bases commonly fall in the £900–£1,800 range, while larger or reinforced concrete bases for heavy sheds or garden offices can be £2,000–£4,000+. We’ll confirm after a site survey in SW1.
Most shed base installations take 1 day for small to medium slab, grid, or timber bases, assuming straightforward access. Concrete bases typically take 1–2 days including preparation, with additional curing time before placing a heavy shed (often 48–72 hours, longer in cold weather). Timescales can change with excavation depth, spoil removal, steps or narrow routes, and whether drainage improvements are required.
In many cases, a shed base and a typical garden shed fall under permitted development, but rules can change with listed buildings, conservation areas, front gardens, and outbuildings used as accommodation. The City of Westminster can also have stricter expectations around drainage and alterations to shared spaces. We’ll flag likely constraints during the survey and can help you check guidance before work begins.
We provide a 10-year warranty on workmanship for shed base construction, covering issues such as settlement caused by inadequate preparation, loss of level, or edge failure attributable to installation. It also includes defects in our sub-base and compaction methods. The warranty doesn’t cover damage from third-party alterations, extreme ground movement beyond reasonable control, or problems caused by an incorrectly assembled shed. We’ll explain care and loading limits clearly.
We install concrete bases for maximum strength, paving slab bases for flexibility and easy repairs, plastic grid bases for fast-draining low-impact builds, and timber bases for raised solutions over uneven ground. We can add edging, step-downs, or drainage channels where water tends to collect. If you’re choosing between options, we’ll consider shed weight, intended use, access in Westminster, and the finish you want around the base.
Get your free, no-obligation quote today.