We don't follow a specific standard for our regular floor plan.
This being said, we do provide accurate and close to reality measurements on all our floor plans.
For the USA
We offer a digital GLA floor plan which follows the ANSI-Z765 standard and is dedicated to US appraisers. These plans are accepted by the main industry players such as Fannie Mae. For more details you can check our dedicated GLA FAQ.
The GLA floor plan, alongside the specific area calculation it contains, can be purchased as an add-on (even once the original listing floor plan has been produced.