Definition
Formula
Vanity Ratio = (Architectural Top − Honest Height) ÷ Architectural Top × 100
The Vanity Ratio expresses as a percentage how much of a building's claimed architectural height is above the highest floor a human can stand on. A building where the top floor and the architectural top coincide scores 0%. A building where a third of its height is empty spire scores 33%.
It differs from Vanity Height - which is the absolute metres of unoccupied structure above the occupied zone. A 600m building with a 60m spire and a 200m building with a 20m spire both have a 10% Vanity Ratio, but very different Vanity Heights (60m vs 20m). The ratio is used for ranking comparison. The height is used for absolute analysis.
Interpretation
Under 5%
Near-zero vanity
Architectural top and occupied ceiling nearly coincide. Building is what it claims to be.
5-15%
Moderate
Some decorative structure above occupied zone. Common in contemporary supertalls.
15-30%
Significant padding
Meaningful gap between marketed height and honest height. Building claims more than it delivers.
Over 30%
High vanity
Substantial portion of claimed height is unoccupied decoration. Padded Pinnacle territory.
Examples from the Honest 100
Most honest (lowest ratio)
Federation Tower East (Vostok)
Moscow · RU
0.0%
Vanity Ratio
OKO South Tower
Moscow · RU
0.1%
Vanity Ratio
CITIC Tower (China Zun)
Beijing · CN
1.1%
Vanity Ratio
Least honest (highest ratio)
What counts as the architectural top
The architectural top is the highest structural element of the building - which may include spires, antenna masts, decorative crowns, or mechanical penthouses. We use the same architectural top figure as the CTBUH (now CVU) for comparability.
What counts as the highest occupied floor is the elevation of the highest floor that is regularly accessible and used - whether office, residential, hotel, or observation deck. Mechanical floors are excluded. Temporary construction access is excluded.
In some buildings (notably Willis Tower and CITIC Tower), the observation deck or hotel floor and the building's effective top are only a few metres apart - producing very low Vanity Ratios. In others (One World Trade Center, Bank of America Tower), the observation deck sits hundreds of metres below the marketed architectural top.