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
NAIBC / IRC codes
References & Sources
Standards Cited
- ANSI Z765 — ANSI Z765 — Square Footage — Method for Calculating
Standard method for measuring residential floor area used in price-per-sqft calculations in North America - BOMA 2017 — BOMA International — Office Buildings: Standard Methods of Measurement
Defines standard methods for measuring commercial floor areas (rentable, usable, gross) used in price-per-sqft calculations - RSMeans — RSMeans Data — Construction Cost Estimating
Industry-standard cost-per-square-foot benchmarks for North American construction
Formulas Used
- Price per ft²:
pricePerSqFt = totalPrice / areaSqFt
Source: ANSI Z765 / BOMA measurement standards - Price per m²:
pricePerSqm = totalPrice / areaSqm
Source: Standard calculation - ft² to m² Price Conversion:
pricePerSqm = pricePerSqFt x 10.764
Source: NIST conversion factor - Total from Rate:
totalPrice = pricePerSqFt x areaSqFt
Source: Standard calculation
Key Assumptions
- 1 m² = 10.764 ft² (standard conversion factor) — NIST
- Areas are assumed to be measured to ANSI Z765 (residential) or BOMA (commercial) standards — ANSI Z765 / BOMA International