3-30-300 is a simple but transformative rule, proposed by Dr Cecil Konijnendijk, a renowned urban forester from The Netherlands (www.nbsi.eu). It is based on the idea that access to nature, particularly trees and green spaces, offers numerous benefits, including improved mental and physical health, increased biodiversity, and better climate resilience.
In 2025, Treeconomics introduced Urban Forest 3-30-300 within the UK. Aimed at local authorities, it provides a clear way to visualise access to trees and green space for every individual home within a town, city or county. It is designed to help those tasked with green infrastructure management to see exactly where planting and investment will have the biggest impact for residents.
For more information on the rule, and on Urban Forest 3-30-300, visit our dedicated webpage. Here, you can obtain a quote for your local authority area, and book a call with one of our team.
Watch our webinar below, where we discuss the concept of tree diversity and its importance in the context of 3-30-300.
