Ground screws
For most garden offices, ground screws under a ring beam are enough. Our pile calculator works it out for you.
Garden office foundation
A garden office without a concrete slab
A garden office or pool house sits on a ring beam on ground screws or screw piles. No digging, no soil to remove and no curing: the office can go on its foundation straight away.
Why no concrete?
- No digging: your lawn and garden stay largely intact
- Ready to load at once, no weeks of waiting for concrete
- Even through a narrow passage, with hand-held machines
- A ventilated void under the floor keeps everything dry
- Removable or reusable later
Which foundation?
Screw piles
For a heavier office or soft ground we choose screw piles that go deeper, down to bearing ground.
Ring beam
The office rests all round on a ring beam, with the piles at set intervals underneath.
How it works
How it works on site
- Setting outWe set out the positions to your plan and check for utilities.
- Screwing inBy hand-held machine or compact tracked machine, even in a back garden.
- To levelThe laser sets all heads to the same height.
- BuildingThe ring beam and the office can go straight onto the piles.
Frequently asked questions
Do I need planning permission for a garden office?
That depends on the structure itself, not on the foundation. Screw piles are generally accepted wherever a concrete foundation is allowed. If in doubt, check with your local council.
How many piles does a garden office need?
That depends on the size, the weight and the soil. The pile calculator gives you an indication in one minute.
What if my garden can only be reached through the house?
Often that works: with hand-held machines we also get through a narrow passage.
Ready for your project?
Send us the dimensions or a plan. We reply within two working days.
Calculate your foundationRead also: Solar panels · Tiny house · Carport · Garden shed · Terrace & deck · Container units · Screw piles · Ground screws