Core Layout generates regulation-compliant lift, stair, and shaft packages for UK residential buildings — concept-stage 3D volumes, straight in your browser. No Revit. No install. No account.
Stop guessing core sizes. Core Layout applies UK residential regulations and gives you correct dimensions and 3D volumes in seconds.
Lift shaft dimensions calculated to UK residential standards — dimensions update live as you change storey count or building type.
Stair core widths and lengths set to comply with fire escape requirements. Single and twin stair configurations supported.
Horizontal and vertical service shaft volumes included in the core package — sized for typical M&E distribution in residential blocks.
Three.js 3D model updates in real time as you adjust inputs. Rotate, zoom, and inspect your core package directly in the browser.
Change floor count, building type, or configuration and the core dimensions and 3D model update immediately — no waiting, no export step.
Runs entirely in any modern browser. No Revit licence required. Free to use at concept and feasibility stage on any device.
Enter your building parameters and Core Layout does the regulation checking for you.
Set the number of storeys, building type, and dwelling count.
→Select single stair, twin stair, or scissor stair core arrangement.
→Core Layout generates a live 3D model — rotate and inspect immediately.
→Take the compliant dimensions straight into your Revit model or feasibility drawing.
Core Layout runs entirely in the browser — nothing to install and nothing to maintain.
No account, no install, no credit card. Open it in your browser and start generating compliant core packages in seconds.
Open Core Layout →Free forever · Works in any modern browser