Urban and regional planning happens within the context of the principles of sustainability as enshrined in Agenda 21 - the global blueprint for sustainability that was agreed at the United Nations Conference on Environment and Development in 1992 (the Rio Earth Summit).

These principles are:

The precautionary principle - where there are threats of serious or irreversible damage to the community's ecological, social or economic  systems, a lack of complete scientific evidence should not be used as a reason for postponing measures to prevent environmental degradation. In some circumstances this will mean actions will need to be taken to prevent damage even when it is not certain that damage will occur.

The principle of intergenerational equity - the present generation must ensure that the health, integrity, ecological diversity, and productivity of the environment is at least maintained or preferably enhanced for the benefit of future generations.

The principle of conserving biological diversity and ecological integrity - aims to protect, restore and conserve the native biological diversity and enhance or repair ecological processes and systems.

The principle of improving the valuation and pricing of social and ecological resources - the users of goods and services should pay prices based on the full life cycle costs (including the use of natural resources at their replacement value, the ultimate disposal of any wastes and the repair of any consequent damage).

Zenith Town Planning acknowledges and adheres to the principles of sustainability. The four core principles, given credence through Agenda 21, guide all research and recommendations.  Triple bottom line assessment methods are applied to all projects to ensure that the results are socially, economically and environmentally responsible.

In carrying out business and professional activities Zenith Town Planning also aims to contribute to realising the Sustainable Development Goals of the UN 2030 Agenda for Sustainable Development.  These goals will build an inclusive, sustainable and resilient future for people and the planet through economic growth, social inclusion and environmental protection.  Allen, the principal of Zenith Town Planning, is the leader of the Eurobodalla Branch of Surfrider Foundation Australia - a not-for-proft environmental group dedicated to the protection of Australia's waves and beaches.