Open Mon-Sat 8am-6pm
- Higham Ferrers, Northamptonshire
- 01933 213009
- info@highamlandscapes.co.uk
Solid, level concrete bases for sheds, summerhouses, garden rooms, hot tubs and garages. Every base is dug out properly, built on a compacted sub-base with a damp-proof membrane, and backed by our 15-year base warranty.
Can’t get through? We’re often out on site, so send us a message and we’ll reply within 24 hours.
Free site visit and fixed written quote. No obligation. We reply within 24 hours.
Most base problems start underneath. Concrete poured straight onto topsoil, a slab that’s too thin, or no membrane to stop damp. The result is cracking, sinking and a shed floor that rots from below.
We dig every base out to firm ground, lay and compact 100mm of MOT Type 1 sub-base, add a damp-proof membrane and set timber shuttering square and level. Then we pour 150mm of concrete for sheds and summerhouses, or 200mm reinforced with steel mesh for garden rooms, hot tubs and garages.
150mm concrete on a compacted sub-base with a damp-proof membrane. Sized so rainwater runs off rather than sitting under your cladding.
Best for: Sheds, summerhouses, log stores and greenhouses
200mm concrete reinforced with steel mesh to carry the weight of insulated walls, glazing and furniture. Built dead level for a clean install.
Best for: Garden offices, gyms and studios
A filled hot tub with people in it can weigh two tonnes or more. A 200mm reinforced pad spreads that load and keeps the tub perfectly level.
Best for: Hot tubs and swim spas
Thick, reinforced slabs built for vehicles, workbenches and heavy storage, with the sub-base to match.
Best for: Garages, workshops and car ports
Our standard base: 150mm of concrete on 100mm of compacted MOT Type 1 and a damp-proof membrane.
200mm of concrete with steel mesh for heavier buildings, hot tubs and anything a vehicle will drive onto.
Slabs laid on a full mortar bed over a compacted sub-base. A neat, lower-cost option for smaller sheds and greenhouses.
We measure up, check levels and access, and confirm the base size your building’s manufacturer recommends.
We excavate to firm ground and level the area, digging into or building up sloping gardens as needed.
100mm of MOT Type 1 hardcore is laid and compacted to give the concrete a solid, stable bed.
A damp-proof membrane goes down, and timber shuttering is set square, level and to size.
150mm of concrete, or 200mm with steel mesh for heavy loads, is poured, tamped and finished flat.
Leave it about a week before the building goes on. We can put up your shed or garden room for you.
150mm concrete, sub-base, membrane and shuttering included
Per square metre, for larger bases
Per square metre, for garden rooms, hot tubs and garages
Per square metre
Optional grab lorry per load (most jobs need one)
Priced on your site visit
We’re honest about access: if there’s no practical way to get concrete in, there’s no way to get waste out either. In those rare cases we’ll tell you straight away rather than quote for a job we can’t do well.
“A base is the one part of the job you never see again once the building’s on it, so it’s the last place to cut corners. Every base we lay gets a proper sub-base, a membrane and the right thickness of concrete for what’s going on it.”
Alyn Jones, owner of Higham Landscapes
Higham Landscapes is run by Alyn Jones from Higham Ferrers. We’ve been building bases, fences and gardens across Northamptonshire for over 10 years, and we stand behind every base with a 15-year warranty.
Your base stays structurally sound and fit for purpose for 15 years. Hairline cracks and surface weathering are normal for concrete and aren't covered.
We size and build each base to your building supplier's requirements, so their warranty stays valid too.
£2 million public liability insurance, so your property and your neighbours' are covered.
Every base is built by our own team, never subcontracted, from first visit to final finish.
A selection of bases we’ve built for sheds, garden rooms and hot tubs across the county.
The base itself doesn’t need permission. Most sheds and garden rooms in England are permitted development if they’re single storey, not in front of the house, and cover no more than half the garden. Within 2 metres of a boundary, the building must be no more than 2.5 metres high.
Building regulations don’t usually apply to detached outbuildings under 15m² with no sleeping accommodation. Listed buildings, conservation areas and some new-build estates have extra rules, so check with your council if in doubt.
Follow your building manufacturer’s guide. Most recommend a base the same size as the floor, or slightly smaller, so rain runs off the edge instead of pooling against the cladding.
Leave room around the building to maintain it, typically at least 500mm from fences and walls. Send us your building’s spec and we’ll size the base to match.
Concrete is the strongest option and the right choice for garden rooms, hot tubs, garages and any large or heavy building.
A paving slab base on a full mortar bed is a neat, lower-cost option for smaller sheds and greenhouses, but it isn’t suitable for heavy loads.
Advice written by Alyn Jones, owner of Higham Landscapes. Last reviewed October 2026.
Can’t see your question? Call us on 01933 213009 or send us a message, and we’ll be happy to help.
We recommend waiting about a week before a shed or summerhouse goes on. For garden rooms, hot tubs and garages, we’ll tell you exactly how long to wait before full loads, as concrete keeps gaining strength for several weeks.
We build shed and summerhouse bases with 150mm of concrete as standard, on 100mm of compacted MOT Type 1. Garden rooms, hot tubs and garages get 200mm of concrete reinforced with steel mesh.
We lay a damp-proof membrane under every concrete base we build. It stops ground moisture rising through the slab, which helps protect the floor of your building.
Yes. We either dig into the slope or build the base up with shuttering so it finishes level. Steeper slopes take more work, which we’ll price on your site visit.
We can pump concrete over long distances to reach most gardens, though longer runs add to the cost. If there’s no practical access at all, we’ll tell you honestly, because if concrete can’t get in, the waste can’t get out either.
Yes, if you’d like us to. Waste removal is an optional extra on your quote at £300 per grab lorry load, and most jobs need just one.
Our warranty covers your base staying structurally sound and fit for purpose for 15 years. Hairline cracks and surface weathering are normal for concrete and aren’t covered, as long as the base is still strong and does its job.
Yes. Once the base has cured, we can assemble your shed, summerhouse or garden room for you. We’ll include it on your quote.
No. We don’t take a deposit. You pay once the job is finished and you’re happy with it.
We’re often out on site, so we can’t always answer straight away. Send us a message using the quote form or email info@highamlandscapes.co.uk, and we’ll reply within 24 hours.
We’re based in Higham Ferrers and build bases across Northamptonshire, including Rushden, Wellingborough, Irthlingborough, Raunds, Kettering, Northampton, Corby, Thrapston and Oundle, plus surrounding villages.
Our home town, plus Chelveston and Caldecott.
Including Newton Bromswold, Bozeat and Wymington.
Including Finedon, Irchester, Wollaston and Great Doddington.
Including Raunds, Stanwick, Ringstead and Great Addington.
Including Burton Latimer, Barton Seagrave, Rothwell and Desborough.
Including Duston, Kingsthorpe, Abington and Weston Favell.
Including Weldon, Oakley Vale, Stanion and Gretton.
Including Thrapston, Islip, Woodford and Denford.
