Practical engineering Clear documentation Built for approvals

iDECS Engineering Services is a civil and structural engineering consultancy supporting homeowners, builders, architects and developers across Sydney and the Greater Sydney Region, including the Blue Mountains, Wollongong and Newcastle.

We focus on delivering safe, compliant and buildable engineering outcomes—whether that’s structural certification for a renovation, a fast beam/span check, or full design documentation for a retaining wall or footing system. Our approach is straightforward: understand the site and scope, apply the relevant codes and standards, and provide clear drawings and certification that certifiers and builders can act on without confusion.

10+

15

Trusted locally

Chartered experts

What we do

We provide engineering support across the full project lifecycle—early advice, design development, approvals, and construction-stage inspections.

Typical services include:

• Structural design and certification (residential & light commercial)

• Beam/span checks and member verification (timber, LVL, steel)

• Retaining wall design (masonry and reinforced concrete)

• Footing and slab design (site-specific, as required)

• Site inspections and written reports (defects, cracking, compliance checks)

• Minor civil design support (where applicable to the project)