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BASIX certificates and residential sustainability assessments for developments across New South Wales

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 for new homes and residential developments throughout New South Wales

BASIX Certificates and sustainability assessments for new residential dwellings across NSW

BASIX assessments for residential alterations additions and renovations requiring approval

BASIX assessments for major renovations and home extensions requiring development approval

BASIX certificates for secondary dwellings granny flats and residential additions in NSW

BASIX Certificates for granny flats and secondary dwellings throughout NSW.

BASIX assessments for residential swimming pools and associated development approvals

BASIX assessments for swimming pools and associated development applications.

BASIX certificates for townhouses apartment developments and multi-residential projects

BASIX Certificates and sustainability assessments for townhouse and multi‑residential developments.

BASIX certificate reviews supporting compliance updates and development approval requirements

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

BASIX water efficiency assessment including rainwater harvesting and water saving measures

Water Efficiency

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

BASIX energy efficiency assessment including solar energy and residential sustainability measures

Energy Efficiency

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

Thermal comfort assessment supporting BASIX and residential energy performance compliance

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.

Green Star Accredited Professional logo supporting Senica’s sustainable building consulting credentials.
Home Energy Rating and NatHERS logos for Senica’s accredited residential energy efficiency expertise.
Professional accreditation logo for NABERS accreditation and energy efficiency expertise.

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.

© 2025 by Senica Consultancy Group. All rights reserved.

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