WILL THE STRUCTURE ACTUALLY HANDLE IT?
In Perth homes, structural changes are not cosmetic decisions. They affect how loads move through the building - from the roof to the walls, through the slab, and into the ground below. If that load path is interrupted without proper engineering, the result isn’t subtle. It often shows up as cracked walls, sagging ceilings, sticking doors, or long-term structural movement.
That’s where a residential structural engineer becomes essential.
We provide structural engineering services across Perth and surrounding WA suburbs, supporting homeowners, builders, and designers with compliant, build-ready structural documentation aligned with Australian Standards, the National Construction Code, and relevant WA requirements.
WHAT HAPPENS WHEN YOU REMOVE A LOAD-BEARING WALL?
Here’s a common scenario.
A homeowner wants an open-plan kitchen and living space. The wall in the middle “looks non-structural”. It probably isn’t.
That wall may be carrying roof loads, ceiling loads, or even bracing loads from wind pressure. Remove it without engineering, and the weight above has nowhere safe to transfer.
Our role is to assess what that wall is supporting, calculate the new load distribution, and design the correct beam size, supports, and footing upgrades if required. Not oversized. Not under-designed. Just right.
Engineering takes the guesswork out of renovation decisions.
NEW HOMES DESIGNED FOR PERTH CONDITIONS
For new residential builds, structural engineering starts with soil.
Perth is known for reactive clay soils in many areas. Under Australian Standard AS 2870, sites are classified into categories such as A, S, M, H, E, or P, ranging from stable sand to highly reactive clay. This classification directly affects slab thickness, reinforcement design, footing systems, and long-term performance.
Designing for Perth conditions means understanding ground movement patterns, seasonal moisture variation, and how slab-on-ground systems perform over time.
We engineer footings, slabs, framing, retaining walls, and structural elements to suit the specific site classification - not generic assumptions.
RENOVATIONS, EXTENSIONS & SECOND STOREY ADDITIONS
Renovations can be structurally complex because they involve old and new systems working together.
An extension requires tying new footings into existing slabs. A second-storey addition involves assessing whether the original footings and load-bearing walls can support additional vertical load.
In many Perth homes built decades ago, original footings were not designed for future vertical expansion. Before building up, the existing structural capacity needs to be verified.
If strengthening is required, we design practical solutions such as additional supports, underpinning, or load redistribution to ensure comp
liance and long-term structural integrity.
These assessments are calculation-driven, not opinion-based.
TESTIMONIALS
WHAT OTHERS ARE SAYING ABOUT US
JOHN SMITHS
Complete Structural Design provided me with an excellent experience. Despite facing engineering issues, the team managed to complete my project without any hassle. I highly recommend their services and will definitely be utilizing them again. Their professionalism and personalized approach were top-notch.
TINA JOHNSON
The team at CSD provided structural solutions and were friendly, helpful, and knowledgeable. They quickly turned my plan into a reality that matched my vision. If you need assistance from a professional team, I highly recommend giving them a call.
DEB PETERSEN
I highly recommend Alex and the team at Complete Structural for their exceptional assistance with various designs and elevations that involved multiple drafting techniques. Their extensive knowledge and valuable advice in the building industry have been invaluable to me.
LICENSED, CERTIFIED & COUNCIL-READY DOCUMENTATION
Structural drawings submitted for building approval must be prepared or certified by a qualified professional. Our documentation aligns with Australian Standards and is prepared for smooth submission to Perth building certifiers and local councils in line with WA planning requirements.
Clear documentation helps reduce site delays, avoid costly variations, and gives builders confidence during construction.
Turnaround times are structured to support residential build schedules, helping projects move from concept to approval efficiently.
WHY ENGINEERING MATTERS
Most structural issues do not happen instantly. They develop gradually through stress, movement, and unaccounted load changes.
Proper structural engineering is not about overbuilding. It’s about precision - calculating exactly what is required for safety, compliance, and durability.
When engineering is done properly, it becomes invisible. The home performs quietly, safely, and predictably for decades.
That quiet performance is the result of careful structural design beneath the surface.