UK Construction Cost Calculator

Project Info

Existing Building

Utilities

Results

1A — Core Project Parameters

Project Type *

Apartment Block / Mixed-Use New Build House

London Borough *

Gross Internal Area (GIA) — New Build *

Number of Units (Flats/Apartments) *

Required for planning fees and S106 assessment

Number of Storeys *

Design Maturity / RIBA Stage

Piling Required?

Unknown Yes No

London clay often requires piling. Adds £80–180/m²

Basement?

No Basement Has Basement

1D — Architect's Plans (optional — improves accuracy)

📐

Déposer les plans ici

PDF, PNG, JPG — plans d'architecte, permis de construire
L'IA extraira automatiquement les surfaces (GIA par pièce/étage)

Cost Estimate — London 2025 — NRM1 Elemental