'Practical Solutions for Sustainable Building'

Building Sustainability Assessments (BSA) is an established & accredited building sustainability assessment consultancy based in Newcastle and servicing Hunter Valley, Central Coast, Sydney and all areas throughout NSW. Since 2003 our team has provided a range of services to builders, developers, architects, building designers and home owners to meet the regulatory controls for residential and commercial buildings.

Our services include:

  • Specialists in NatHERS simulations of single and multi-residential dwellings using BERS Pro
  • Expertise in the function of the online BASIX tools and issuing of BASIX Certificates for New Dwellings, Multi Dwellings and Alterations and Additions
  • Comprehensive knowledge and experience with NCC (BCA) Section J advice and reporting
  • Experts in simulation modelling using DesignBuilder for the JV3 Verification Method as an Alternative Solution for Section J compliance

The team at Building Sustainability Assessments undertakes thermal simulation modelling of all residential projects ranging from single dwellings to large residential flat buildings. Our commercial consulting covers all aspects of Section J for all types of Class 2 to Class 9 buildings.

In the last year alone we have provided thermal performance certifications for over 4000 dwellings, issued over 1000 BASIX Certificates and provided Section J reporting for more than 200 projects.

Our sustainability philosophy is to provide practical advice based on real industry experience and to help our clients meet sustainability targets in a cost effective and achievable way.

Simple, easily understood documentation is the keystone of our success. All our documents are designed to be read and understood by the person in the field so that they know what needs to be built into the works for compliance.

 Our highly trained and experienced staff are focused on superior customer service and provision of practical cost-effective solutions. 

Since 2003 we have completed  over:

BASIX Certificates


NatHERS Assessments


Section J Reports



NatHERS Assessments


Section J Reports

Contact Us

☎  02 4962 3439


Office Hours

Monday - Friday: 8am - 4pm

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