Welcome to CMS BASIX basics

Building consultants offering building and environmental solutions for architects, building designers, builders, developers and home owners.

What is BASIX?

• BASIX is a planning initiative of the NSW Government that requires all new dwellings to to be designed and built to achieve a 40% reduction in water consumption and 40% reduction in greenhouse gas emissions compared to the average dwelling.That is, new dwellings have to use less water and be more energy efficient.

• A BASIX certificate has to be lodged with the Development Application plans.

• Typically the BASIX certificate for a single dwelling is a six page document, with a unique certificate number.

• A BASIX certificate for a large multi-unit residential development may be twenty four pages.

• A typical BASIX certificate for a single dwelling includes commitments that certain items will be included in the construction. For example some commitments could be R2.5 ceiling insulation, a 3000 litre rain water tank and a solar hot water system. A building certifier will check that all BASIX commitments have been built or installed before issuing an occupancy certificate.