Helical screw pile design, ready for Building Control.
Pile layouts, load calculations and ground beam details for extensions and new builds across Sussex, Surrey and South London. Send us your drawings and we'll tell you if piles are the right call.
When screw piles make sense
We recommend piles when a trench foundation would be deep, disruptive or hard to reach. We'll say so plainly when it isn't worth it.
Shrinkable clay
Piles get below the zone where clay swells and shrinks with the seasons.
Trees nearby
Where tree influence would push trench depth well past normal, piles avoid the dig.
Restricted access
Compact rigs reach rear gardens and narrow side passages.
Poor or made ground
Loads are carried down to competent strata instead of relying on weak topsoil or fill.
Timber frame and modular
Light structures pair well with a pile-and-beam base and a fast programme.
Garden rooms and annexes
Quick to install with minimal disturbance to the garden.
What's in the package
Everything your builder, installer and Building Control officer need, from one engineer.
Ground review
Desk study of soils, trees and access, with site investigation advice where needed.
Pile layout and schedule
Positions, loads, target torques and minimum depths for the installer.
Ground beam and connections
Beam design and pile cap details to suit masonry, timber frame or steel.
Calculations for Building Control
A full calculation pack submitted alongside your building regulations drawings.
Torque record review
We check the installer's records against the design and confirm sign-off.
Fixed-fee design
Send us your drawings and we'll quote a fixed fee for the pile design before any work starts. Your builder or installer takes it from there.
Request a quoteNeed it built too?
Our sister company STAAC Designs takes our pile design through to a finished extension, so one team owns the whole job.
Visit STAAC screw pilesSend us your drawings.
Share your plans and site address and we'll confirm whether screw piles suit the job, with a fixed fee.