The author, whose guide to the measurement of commercial office space was initially published in print in 2006, emphasises that this e-book is intended for both tenants and landlords. Dr Erdélyi has decades of experience so he knows very well how the incorrect calculation of office space or a term interpreted differently by the parties involved can lead to misunderstanding or even to them ending up in court. For example, a 3% difference in a lease contract for 5,000 square metres, while still within the tolerated range, could result in a 1,500 €/month difference in the rent.

The book provides a brief historical overview, addresses the issue of elusive square metres and the pitfalls of terminology, and then analyses office building areas and discusses office space requirements. The key chapter, Recommended method for calculating leasable areas, introduces a new concept - lease value. (Lease value ratio is the value reflecting the function and utility of a room (space) as well as its location, expressed as a percentage, determined by the landlord. Refer to the book for further details.)

In addition to a clear and accurate explanation of the theory, the book also contains specific examples complete with figures and illustrative tables for the benefit of readers who wish to immerse themselves in the details of leasable area analysis or calculation. Its key chapter pertains to commercial office space, although in practice some of its elements are relevant to a wider scope of users.

The reworked second edition takes advantage of the creative and interactive features offered by e-book editing so it is by definition significantly different from the print version. It is more than just a file which can be read on a tablet or laptop; it features pop-up texts to help readers better understand and use its contents, scrolling sidebars for larger tables, and even embedded YouTube videos.

The guide is simple and user-friendly. It also contains a glossary to promote better understanding, again supported by interactive features.

First impressions indicate that the recommendations of this e-book may well approximate or even standardise the methods of leasable area analysis and calculation favoured by tenants and landlords respectively, and even create a consistent approach and way of thinking, thereby contributing to a closer and more efficient cooperation between the parties.

The Measurement of Commercial Office Space also offers a calculation method for the rational use of office space based on statistical data, which is particularly useful for potential tenants. The rent calculator based on this method can be found on the following page of the portal: /