Pricing and cashback

How is the Price Index median worked out?

Asked by the spacebly teamspacebly team· 4 Nov 2026

A median can be calculated in different ways. Here's the method behind each Price Index figure.

1 answer

1. spacebly teamspacebly team4 Nov 2026

   Each qualifying suite counts once. It contributes its lowest quoted monthly rate per desk (method as of Nov 2026).

   Rates below £50 or above £5,000 per desk per month are discarded as data entry errors. They're usually hourly rates or placeholder values. Occupied and on hold suites are left out.

   For each city we sort the rates. We then report the 25th percentile, the median and the 75th percentile using linear interpolation. The range from the 25th to the 75th is the middle half of the market.

   Buildings are matched to a city by name. Where the name doesn't match, they're matched by distance to the nearest hub centre. The radius is 32 km for London and 15 to 20 km elsewhere.

   The national figure uses every qualifying rate across all published cities.

   Method: https://spacebly.com/price-index/methodology