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Intelligence / Benchmarking

Learn from the right comparisons.

Compare market and construction evidence. We are also developing private benchmarking across your own projects and assets.

Discuss benchmarking

An illustrative construction comparison

A useful range.
A considered assumption.

A cost rate only means something when you know what sits behind it. Follow a fictional residential project from comparison to a construction allowance.

Illustrative figures · not market evidence
01 / ALIGN THE BASIS

Same cost.
Different denominator.

A £3m construction allowance looks like £3,000/m² on net area, but £2,500/m² on gross area. The building and budget haven’t changed.

Use the same area definition before comparing rates.

Conceptual apartment floor cutaway: dark usable rooms around a pale shared corridor and core.
Usable roomsShared circulation & core
Conceptual illustration · areas below are assumed, not measured from this image.
Net internal area1,000 m²
Gross internal area1,200 m²
£3m ÷ 1,000 m² net
£3,000/m²
£3m ÷ 1,200 m² gross
£2,500/m²
02 / COMPARE THE RIGHT CASES

Compare like with like.

Start with buildings that belong in the same conversation. Then look at the range.

Architectural illustration of a contemporary residential courtyard development with consistent materials and building scale.
Fictional architectural setting
Place & period
Same location and price date
Type & specification
Comparable residential buildings
Area & scope
Gross area · construction only
Five comparable examplesIllustrative construction rates · £/m² GIA
Example A
£2,200
Example B
£2,350
Example C
£2,500
Example D
£2,600
Example E
£2,800
Illustrative range£2,200–£2,800/m² GIA

Five invented allowances, on the same GBP price basis. Land, fees and finance are excluded. A range informs your judgment; it does not choose your specification.

03 / FORM YOUR ASSUMPTION

See what your
choice changes.

For the same 1,200 m² project, try a higher construction allowance. See the effect before considering the rest of the appraisal.

Your selected rate£2,500/m² GIAWithin the illustrative range
£2,000£3,000/m²
£2,500/m² × 1,200 m² GIAConstruction allowance£3,000,000

The starting construction allowance.

01

Compare like with like.

Place, period, asset type, area basis and scope affect what a number means. Keep those differences visible.

02

Inform an assumption.

Use a comparison as evidence for judgment, then examine the financial consequences of the assumption you choose.

03

Learn from your own work.

We are developing private benchmarking so organisations can learn from their cases and performance. This is not a shared pool of customer data.