Green Building Score Calculator

Work out green building score instantly with clear inputs, formula shown and shareable results.

About Green Building Score Calculator

Green building rating systems award points across categories such as energy, water, materials, indoor environment and site. Thresholds define certification levels. Because energy typically carries the most points, it dominates strategy — but the cheapest points are often in categories nobody has considered.

Formula

Rating score

Points achieved = sum of category points; rating determined by threshold bands

Worked example

With the default values below, Green Building Score Calculator returns Points Achieved of 43. Change any input above and every figure here is recalculated in your browser.

Inputs used

Energy Category Pointsminimum 0: 25
Water Category Pointsminimum 0: 8
Materials Category Pointsminimum 0: 10
Total Points Availableminimum 0: 110

Results

Points Achieved: 43
Percentage Of Available Points: 39.091%
Indicative Rating Level: Certified
Points To Next Level: 7

Step by step

1Values used
2Rating score
3Points Achieved= 43
4Percentage Of Available Points= 39.091
5Indicative Rating Level= Certified
6Points To Next Level= 7

Assumptions and limits

The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 3 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
Green building certification criteria, point allocations and thresholds are set by the specific scheme and version. Confirm against the applicable rating manual.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Green building certification criteria, point allocations and thresholds are set by the specific scheme and version. Confirm against the applicable rating manual.

Frequently Asked Questions

Which points are cheapest to obtain?

Usually documentation and process credits, commissioning, and site and transport credits determined by location. Energy credits deliver the most points but cost the most capital.

Does certification mean low operational energy?

Not necessarily. Design-stage ratings predict rather than measure performance, and the performance gap between predicted and actual energy use is often large. In-use certification schemes address this.