
BASIX Certificates & Compliance Optimisation NSW
Clear guidance on BASIX assessments, compliance requirements and sustainability outcomes for residential projects across New South Wales.
Trusted by homeowners, architects, builders and developers across NSW.
Supporting homeowners, architects, building designers, builders and developers delivering new homes, renovations, swimming pools and multi‑residential developments across New South Wales.
Our BASIX Services
Senica provides BASIX Certificates and sustainability assessments for residential developments across NSW.
BASIX Certificates and sustainability assessments for new residential dwellings across NSW
BASIX assessments for major renovations and home extensions requiring development approval
BASIX Certificates for granny flats and secondary dwellings throughout NSW.
BASIX assessments for swimming pools and associated development applications.
BASIX Certificates and sustainability assessments for townhouse and multi‑residential developments.
Already have a BASIX Certificate?
Our team can review your assessment and identify compliance issues or alternative solutions
BASIX
What is a BASIX Certificate?
A BASIX Certificate is a mandatory sustainability assessment required for most new homes and significant residential developments in NSW.
The BASIX framework assesses water efficiency, energy efficiency and thermal comfort to ensure homes achieve higher sustainability standards while reducing operating costs for occupants.
Our team prepares BASIX Certificates for new homes, alterations and additions, secondary dwellings, swimming pools and multi‑residential developments throughout NSW.
Core Components of BASIX Assessments

Water Efficiency
BASIX assesses fixtures, rainwater harvesting and water-saving measures to reduce water consumption and improve sustainability outcomes.

Energy Efficiency
Building orientation, insulation, glazing and lighting are assessed to improve energy performance and reduce greenhouse emissions.

Thermal Comfort
Thermal performance is evaluated to create more comfortable homes with reduced heating and cooling demand.
Benefits of BASIX Assessments
Beyond development approval requirements, BASIX delivers long-term benefits for homeowners, builders and developers.
Development Compliance
BASIX compliance is required for many NSW residential projects and supports the development approval process.
Lower Energy Bills
Energy-efficient homes consume less electricity and gas, helping reduce ongoing utility costs for occupants.
Improved Comfort
Better insulation, glazing and thermal design help maintain comfortable indoor temperatures throughout the year.
Better Environmental Outcomes
Reduced water consumption and lower greenhouse gas emissions contribute to more sustainable communities.
Related Services
Complement your BASIX assessment with our related sustainability, planning and development consulting services.
Thermal performance modelling and NatHERS assessments for residential developments.
Development application support and planning advice for residential and commercial projects.
Sustainability consulting and ESD reporting for residential and commercial developments.

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Accreditations, Memberships and Professional Capability
Senica’s work is supported by technical knowledge across sustainability, energy efficiency and development compliance services. The About page should link to a dedicated Accreditations and Memberships page where relevant qualifications, memberships, approved assessor credentials and technical capabilities can be clearly presented.
Frequently asked questions
Discuss your Project
Contact Us
Ready to Get Started?
Every project is different. We take the time to understand your design, compliance requirements and approval pathway before recommending the most appropriate assessment approach.
Send your plans or project information to info@senica.com.au or call 02 8006 7784 and our team will provide project-specific advice, a tailored fee proposal and clear guidance on the next steps required for your project.






