Cornwall's Ground Screw & Garden Base Specialists
Ground screw foundations, decking and garden building assembly across Cornwall. Solid, level and tidy — without the mess of concrete.
What we do
A faster, cleaner alternative to concrete. Most bases go in within a day — no digging, no skip, no waiting for anything to cure. Works on sloped and soft ground all over Cornwall.
From £499Sheds, summerhouses, garden rooms and log cabins sourced at trade prices and built on your new base. You deal with Oliver from first visit to finished building.
Built on ground screws, so the frame never sits in wet ground. No rotten posts, no sinking corners.
From £599New felt, tidy edges and small repairs that keep an older shed weathertight for years.
Neat plywood lining and trim work that turns a timber shell into a clean, practical garden room ready for decorating and fitting out.
Why Ground Screws
Ground screws offer a clean, proven alternative to concrete for many garden building foundations. They're quick to install and well suited to Cornwall's sloping, wet and awkward gardens.
Ground screws create a level base without major digging.
Stable, draining foundations help avoid pooling and rot.
Most standard bases go in within a day.
See the system at work
The machine drives each screw into the ground with controlled torque, creating firm support points without excavating a full concrete slab.
Access, levels, ground conditions and the building footprint are checked before work begins.
Screws are positioned and levelled to suit the base, slope and finished floor height.
The treated timber frame can be built straight away, leaving a tidy, ventilated base.
Meet the person doing the work
Oliver founded Base & Build at 18 after spending time pouring concrete and seeing how much disruption a traditional base could leave behind.
Growing up in Cornwall, he understood why people trusted the familiar way of doing things — but he also saw a cleaner option. Ground screws make it possible to create solid, level bases without turning a customer's garden into a building site.
“I wanted to prove that a solid base doesn't have to mean a messy site. I survey and quote the work myself, then make sure the garden is left clean, level and ready for the building.”
Ready to get started? Free site surveys — most booked within 48 hours.
Our Commitment
Oliver checks access, levels, ground conditions and the right base type before anything is quoted.
Straightforward pricing before work starts, with the scope explained in plain English.
Tidy installation, solid materials and a level base ready for the building.
Based in Cornwall. Oliver surveys, quotes and does the work himself — you're never passed to a crew you haven't met.
Treated C24 timber, certified ground screws and galvanised fixings. Built to spec, built to last.
Full public liability insurance on every job, from a shed refelt to a complete supply and build.
Roofing repair
Repair & Restore
If your shed, summerhouse or garden room roof is leaking, lifting, or past its best, we can restore it with quality roofing felt and tidy detailing — a roof that will see out many more winters.
What we can put on top
Choose the building, we handle the base, delivery coordination and assembly. These examples show the types of timber buildings we can source and install on a properly prepared base.
Purpose-built garden studios for working from home, creative space, or a dedicated retreat. Insulated and finished for year-round use.
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Solid, secure timber garages and workshops. Ideal for vehicles, tools, or serious workspace. We source and assemble to your specification.
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Practical, well-built storage sheds in a range of sizes. Delivered and assembled on your new base, ready to use from day one.
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Attractive summerhouses for garden entertaining and relaxation. We supply trade-priced buildings and install them on a solid, level base.
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Robust, safe timber play dens and playhouses for children. Solidly built on a secure base and finished so they last for years.
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All buildings sourced at trade prices and professionally assembled. We coordinate delivery, base installation and building assembly as a single job — no juggling contractors.
Recent Work
Complete · Garden building
Foundation · Timber frame
Foundation · Awkward ground
Complete · Timber shed
Foundation · Frame detail
Complete · Finish detail
Foundation · Level and ready
Foundation · Long garden building
Complete · Raised decking
Foundation · Ground screw support
Complete · Decking platform
Foundation · Compact base
Foundation · Rural garden
Foundation · Small building
Interior · Plywood lining
Interior · Door and window finish
Interior · Ready to fit out
Complete · Summerhouse
Foundation · New-build garden
Complete · Garden summerhouse
Build · Shed assembly
Complete · Timber workshop
Supply + Build
We work with trusted trade suppliers to source quality sheds, summerhouses, garden rooms and log cabins at competitive prices — then deliver and install everything for you. You make one call; Oliver sorts the base, the delivery and the build.
Ground screws mean no excavation, no skip, no long cure time.
Accurate installation for sheds, studios, decking and garden rooms.
Base, delivery and assembly organised as a single job.
Areas We Cover
From Truro to Penzance, Newquay to Falmouth — if you're in Cornwall, we can help.
How It Works
Oliver visits, assesses the site, and gives honest advice on the best approach for your garden.
A fixed written quote with everything itemised. What we agree is what you pay.
Ground screws installed efficiently. Level and solid — usually completed in a single day.
The site is left tidy with a solid, level base ready for your building — or Oliver can coordinate supply and assembly too.
Google Reviews
Recent feedback from customers across Cornwall. Every review card links back to Google so you can check the source before booking a survey.
They demolished 2 sheds very efficiently and professionally. Would definitely recommend them. Polite, friendly young men happy to go that extra mile to help - nothing too much trouble.
Sylvia ButlerOliver responded promptly with a quotation for an urgent visit the next day. He and his colleague did an excellent recovering job. Courteous and professional. Thoroughly recommended.
James AveryWhat you see is what you get. A very polite and experienced young team that deliver exactly what is expected and more. 10/10, I fully recommend this company.
Woody BinerVery impressed with the ground screw system. Very professional, turned up on time, very polite and friendly lads. Extremely pleased.
Ebozo BozoGreat work, professional and punctual, really pleased.
Sue BuntingLatest work from around Cornwall
See recent bases, work in progress and finished garden buildings — plus the practical details that go into each installation.
Common Questions
Can't find your answer? Oliver is always happy to talk through your project directly.
Book your free, no-obligation site survey. Oliver will visit, look at the site, and tell you exactly what it would cost.
Book a Garden Visit Quick WhatsAppMost ground screw bases are installed in a single day. A standard 3m × 3m shed base takes 3–5 hours. Larger garden room or cabin bases may take slightly longer, but we aim to finish everything in a single visit.
In most cases, no. Ground screw bases for standard garden buildings fall within permitted development rights. If you're in a conservation area or the structure is unusually large, different rules may apply. Oliver will advise during your free site survey.
Yes — ground screws are ideal for sloped and uneven ground, which is common across Cornwall. They can be installed at varying depths to create a perfectly level platform regardless of terrain. This is one of their biggest advantages over traditional concrete.
Yes. We offer a full supply and build service — we source sheds, summerhouses, garden rooms, timber studios, and log cabins at trade prices, then deliver and professionally assemble them on your new base.
Assembly time depends on size and complexity. A standard shed takes half a day. A summerhouse or log cabin typically takes 1–2 days. A timber garden studio may take 2–3 days. We'll give you a clear timeline in your quote.
Yes — we cover all of Cornwall including Truro, Falmouth, Newquay, St Austell, Penzance, Bodmin, Wadebridge, Helston, Camborne, and Redruth. If you're unsure, give Oliver a call on 07706 938211 or send a WhatsApp.
Standard ground screw bases start from £499. The final price depends on the footprint, number and specification of screws, access, levels and ground conditions. After the free site survey, you'll receive a clear written quote with the agreed work itemised.
Oliver checks access, the building footprint, slope and levels, ground conditions, drainage, the required finished floor height and your chosen building specification. He then explains the most practical approach and follows up with a written quote.
Often, yes — and keeping the timber frame clear of damp ground is a major advantage. The correct screw length and specification depend on the site, so Oliver assesses the ground before recommending or pricing the base.
Yes, dismantling and removal can often be included before the new base is installed. The exact scope, access and waste removal are agreed in the quote so you know what will be cleared and how the site will be left.
Bases are built with treated structural timber, galvanised fixings and ground screws selected for the building, spans and site conditions. The aim is a square, level, ventilated base designed to support the structure above it.
Yes. Plywood internal lining and tidy trim work can be added to garden rooms and timber buildings, leaving a clean, practical interior ready for decorating or fitting out. Tell Oliver the finish you want at the survey so it can be included in the quote.
Get in Touch
No obligation. Oliver will visit, assess your site and give you a clear, honest quote. Covering all of Cornwall.
Oliver will usually be in touch within 48 hours to arrange your free site survey.