Sq Metre Pricing Calculator
Compare construction quotes fairly by calculating price per square metre. Essential for comparing different builders and project sizes.
Why Price Per Sqm?
Comparing total prices can be misleading when projects are different sizes. Price per square metre lets you compare like-for-like and spot good or bad value.
Typical UK Prices (2024)
- Standard Extension: £1,500 - £2,500/m²
- High-End Extension: £2,500 - £4,000/m²
- New Build: £1,200 - £2,000/m²
- Refurbishment: £800 - £1,500/m²
- Loft Conversion: £1,200 - £2,000/m²
When to Use
- Comparing quotes from different builders
- Estimating costs for planning
- Converting sqft prices to sqm
- Budgeting for extensions and renovations
UKUK Building Regulations
References & Sources
Standards Cited
- RICS — Royal Institution of Chartered Surveyors — Code of Measuring Practice (6th edition)
Defines standard methods for measuring floor areas (GIA, NIA, GEA) used in price-per-sqm calculations
Formulas Used
- Price per m²:
pricePerSqm = totalPrice / areaSqm
Source: RICS measurement standards - Price per ft²:
pricePerSqFt = pricePerSqm / 10.764
Source: NIST conversion factor (1 m² = 10.764 ft²) - Total from Rate:
totalPrice = pricePerSqm x areaSqm
Source: Standard calculation - ft² to m² Price Conversion:
pricePerSqm = pricePerSqFt x 10.764
Source: NIST conversion factor
Key Assumptions
- 1 m² = 10.764 ft² (standard conversion factor) — NIST
- Areas are assumed to be measured to RICS standards (Net Internal Area for most purposes) — RICS Code of Measuring Practice