Ground Screw Installation Specialists
We provide ground screw installation services across Surrey for domestic, commercial and trade projects.
We provide professional ground screw installation for homeowners, builders, and contractors across Surrey. Our service is suitable for a wide range of applications, from small domestic projects to larger structural builds.
Whether you are an individual homeowner planning a single deck, a landscaper who needs reliable foundations for a pergola, or a developer needing structural screws specified across a build, we install to engineered depths using our own ground screw equipment and First Base ground screw stock. The same foundations also underpin our fully managed bespoke garden rooms in Surrey, so the engineering carries straight across into trade installations.
What We Install Ground Screws For
Ground screws are an engineered foundation solution that suits a wide range of domestic, commercial and trade projects across Surrey.
Garden rooms & offices
SIP and timber-framed studios, offices and gym spaces.
Decking & raised platforms
Level decks over uneven, sloping or soft ground.
Pergolas & outdoor structures
Stable anchoring for pergolas, gazebos and verandas.
Extensions & annexes
Engineered foundations for habitable annexes and extensions.
Fencing & structural posts
Long-life post foundations without concrete.
Outbuildings & sheds
Workshops, stores and garden buildings of all sizes.
We offer ground screw installation as a standalone service, not just as part of our own builds.
Surrey gardens and sites vary enormously — from open lawns over free-draining gravel to clay-heavy plots near mature trees, sloping rear gardens, and tight-access urban plots. Ground conditions like these can make traditional concrete bases slow, costly and disruptive. Ground screws offer a clean, structural alternative: they are driven directly into the ground to engineered depths, level out across uneven sites and create an instant, load-rated platform for the structure above.
What makes our approach different is that every foundation is designed around the structure it supports — whether that is one of our own SIP garden rooms in Surrey, a builder's extension subframe, a landscaper's deck, or a contractor's pergola. Screw count, length, layout and load distribution are all matched to the building above and the conditions below.
Why Ground Screws Are a Smart Foundation Choice
A foundation system that suits the way modern garden rooms are actually built — quick, clean, and structurally sound.
No wet concrete
No mixing, no curing time, no waiting days before the build can start.
Faster installation
Most garden room foundations are installed and signed off in a single day.
Less mess and spoil
Minimal excavation means clean lawns, intact planting and no heavy machinery damage.
Great for sloping plots
Screw heights can be set to bring an uneven garden perfectly level.
Suits Surrey ground
Installed to engineered depths to suit clay, mixed soils and root-affected sites.
Versatile by design
Works equally well for garden rooms, offices, annexes, pergolas and decking.
Working With Builders & Contractors
A reliable, professional ground screw installation service for trade clients across Surrey — specified, installed and signed off so your build can proceed without delay.
We regularly work with builders, landscapers, and developers who require reliable ground screw installation for their projects. Whether it's a one-off subframe foundation for a residential extension, a deck across an awkward site, or a structural screw layout specified to engineer's drawings, we install to the spec and timeline your build needs.
Our trade service includes:
- Site survey and load-led screw specification
- Installation to engineered depths with our own equipment and stock
- Levelled top fixings ready for your subframe
- Same-day completion on most domestic-scale projects
- Trade pricing for repeat and multi-site work
Our Ground Screw Installation Process
A controlled, engineering-led process — from first site visit to a build-ready base.
Site assessment
We visit the site, walk the garden, and establish access, levels, services and surrounding influences such as trees and drainage.
Ground condition review
We assess the soil and site conditions to confirm whether ground screws are the right approach and what depths are likely required.
Foundation layout and load planning
The screw count, length and grid are designed around the building above — SIP shell, glazing, loadings and intended use.
Precision installation
Screws are driven to the engineered depth, levelled across the footprint and finished with the correct top fixings for the subframe.
Base ready for build
The foundation is signed off and the structure can land immediately — no curing time, no delays, no second mobilisation.
Ground Screw Sizes & Specification
A quick guide to the screw sizes we typically install across Surrey — and what determines the right specification for your build.
We typically install ground screws ranging from 800mm to 2000mm, depending on the ground conditions and the structure being supported.
Shorter screws may be suitable for lighter structures, while deeper screws are often required for clay soils, heavier buildings, or where additional stability is needed.
Final screw length and layout are always determined as part of the foundation design process.
Ground Screw Foundation Pricing
Transparent guidance on what a typical Surrey ground screw foundation costs — so you can plan with confidence before the survey stage.
Supply and install. 800mm from £75, 1000mm from £95, 1250mm from £105, 1500mm from £130, 2000mm from £160 — based on standard garden room loadings and access.
Most Surrey garden room foundations fall in this range, fully installed.
Depends on screw quantity, ground conditions, loadings and site access.
Estimate Your Ground Screw Foundation Cost
A quick, indicative range based on building size, ground conditions and access. Final figures are confirmed on survey.
Our calculator gives a strong estimate — but every site is different.
If you have plans, a sketch, or even rough dimensions, we can review them and provide a more precise foundation design and quotation.
Most of our clients who send plans are already moving forward with their project — so we prioritise these enquiries.
Have Plans or a Layout?
Upload your drawings and we'll provide a more precise foundation design and quotation based on your exact build.
This is ideal for:
- SIP garden rooms
- Annexes or larger buildings
- Projects with kitchens or bathrooms
- Sloped or complex sites
You can send:
- Hand sketches
- Architect drawings
- SIP layouts
- Photos with dimensions
We'll review everything and come back to you with a clear, professional recommendation.
Ground Screws vs Concrete Bases
Both work. The right choice depends on the building, the site and the timeline — but for most garden rooms, ground screws win on speed, cleanliness and disruption.
Ground Screws
- Installed and ready in a single day
- No wet concrete, no curing time
- Minimal excavation and almost no spoil
- Naturally levels uneven or sloping ground
- Lawns and planting stay largely intact
- Often the strongest match for SIP garden rooms
Concrete Bases
- Heavy excavation and significant spoil to remove
- Curing delays before the build can start
- Much more disruptive to lawns and access
- Sloping sites need step or build-up details
- Wet trades on site — weather dependent
- Right answer for some specific structural cases
We recommend the foundation that genuinely suits the project — ground screws are the right choice for most garden rooms, but not every situation.
Ground Screw Foundations — Surrey FAQs
How much do ground screw foundations cost in Surrey?
Ground screw foundations typically start from around £75 per screw supply and install. Most Surrey garden room foundations fall between roughly £1,500 and £3,500 depending on screw quantity, building loads, ground conditions and access. Larger or more bespoke projects are usually priced on survey.
How many ground screws does a garden room need?
Screw count depends on building size, weight and loadings. As a guide, a small garden room up to around 12m² typically uses 8–10 screws, 12–20m² uses 10–14, and 20–30m² uses 14–20. Final quantity, length and layout are confirmed on survey based on the actual building design.
Are ground screws better than concrete for garden rooms?
For most garden rooms ground screws are an excellent choice — faster, cleaner and far less disruptive than concrete bases. They suit a wide range of Surrey gardens, including sloping or awkward sites. They are not always the right answer for every project, which is why we assess the site before recommending a foundation type.
Can ground screws work in clay soil?
Yes — ground screws work well in many clay-heavy Surrey plots, but the screw length, spacing and load planning need to suit the conditions. We assess the ground at the survey stage and only specify screws where they are genuinely the right solution. For more on local soil conditions, see our complete guide to garden rooms in Surrey.
Can you install ground screws before the garden room arrives?
Yes. Ground screws are installed early in the build sequence so the structure can land straight onto a level, ready foundation. Most installations are completed in a single day with no curing time, allowing the build above to start almost immediately.
Do you offer site surveys in Surrey?
Yes. We carry out free site visits across Surrey to assess access, ground conditions and building requirements before recommending a foundation approach and pricing the work accurately. Book a free site visit if you'd like us to come and look.
Can I send you my plans for a quote?
Yes — sending plans, sketches or a SIP layout is the fastest route to a precise foundation quotation. Use the upload form above to send your drawings.
Do you install ground screws as a standalone service, or only with your own builds?
Both. We offer ground screw installation as a fully standalone service across Surrey — for homeowners with a deck, pergola, fence, shed or outbuilding, and for builders, landscapers and developers who need reliable foundations supplied and installed without taking on the full build. You don't need to be commissioning a Helps & Co garden room to use our installation service.
Do you work with builders, landscapers and contractors on trade projects?
Yes. We regularly work with trade clients across Surrey — from one-off residential extensions and deck subframes to multi-site developer projects. We can install to your engineer's screw specification or design the layout from your drawings. Trade pricing is available for repeat and multi-site work.
What kinds of projects do you install ground screws for?
Ground screws are suitable for a wide range of projects: garden rooms and offices, decking and raised platforms, pergolas and outdoor structures, extensions and annexes, fencing and structural posts, and outbuildings and sheds. If your project sits within engineered load limits and the ground conditions are suitable, ground screws are usually a faster, cleaner alternative to concrete.
Planning a project that needs ground screws in Surrey?
Garden room, deck, pergola, extension, fencing or outbuilding — whether you're a homeowner or a contractor, book a free site visit or send us your plans and we'll advise on the right ground screw specification and pricing for your project. Planning a full build? Explore our insulated garden offices in Surrey — designed, engineered and installed by the same team.