Our Services
Practical, resilient engineering solutions tailored for Australian homes.
Structural and Civil Engineering Design
End-to-end design and drafting services for Residential, Commercial, and Industrial establishments – from concept to construction-ready documentation.
Civil Engineering
Preparation of high-quality documentation for Development Applications (DA) and Complying Development Certificates (CDC), On-site inspections and detailed compliance reporting throughout the construction phase .
Clear advice and reliable documentation from chartered engineers. Project Management and Engineering Advisory – supporting effective project delivery through technical guidance, stakeholder coordination, and design oversight.
Project Management and Engineering Advice
Why clients choose iDECS
Practical, resilient designs tailored for Sydney homes and infrastructure.


Fast turnaround options for common checks and certifications
Clear documentation that reduces back-and-forth with certifiers
Local understanding of NSW approval pathways and construction conditions
Every job is different, but our process stays consistent
We keep communication simple and responsive—so you know what you’re getting, when you’ll get it, and what’s needed to move to the next step.
FAQs
What types of residential projects do you handle?
We work on new builds, duplexes, townhouses, knockdown-rebuilds, renovations, extensions, and retrofitting projects.
Do you offer services for owner-builders or investors?
Yes, we support owner-builders and property investors with customised design, compliance, and project management services to help them navigate council and building requirements.
Do you provide both DA and CDC submissions?
Yes, we prepare and submit both Development Application (DA) and Complying Development Certificate (CDC) packages, including all required engineering and design documentation.
Are your engineers chartered?
Yes, our team is fully chartered with over 19 years of experience in civil, structural, and residential design.
Can I engage your team just for structural engineering or design support?
Absolutely. We offer modular services — whether you need a standalone engineering design, site inspection, or full project management, we’re happy to tailor our service to suit your needs.
How do I get started with idecs?
Simply reach out to speak with a chartered engineer for clear advice and reliable documentation.
Contact Us
Start your project with idecs today.
iDECS Engineering Services
Civil & Structural Engineering | Inspections | Certification
Service area: Sydney & Greater Sydney Region (Blue Mountains, Wollongong & Newcastle)
Phone: +61 403 229 133 |Email: admin@idecs.coma.u
ABN: 75 691 519 874
Services
Structural Certification • Timber Design • Beam/Span Checks • Retaining Wall Design • Footing/Slab Design • Site Inspections & Reports • Civil Works
Standards & Compliance
Design and certification aligned with NCC and relevant Australian Standards (as applicable to each project).
Disclaimer
Information on this website is general and does not constitute engineering advice. All services are provided under a written proposal and are subject to review of site conditions, supplied documentation and required approvals. To the extent permitted by law, iDECS Engineering Services excludes liability for loss arising from reliance on this website without obtaining project-specific professional advice.
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