Servicing Williamstown 3016
House extensions Williamstown, overlay-first.
Rear extensions and second-storey additions for Williamstown's Victorian terraces and waterfront homes — designed to read correctly from the street, engineered for salt-air life.
30+
Years experience
500+
Homes transformed
100%
Licensed & insured
Inner West
Melbourne specialists
Williamstown extensions
Behind the ridge, above the parapet.
In Williamstown the extension question is rarely just about internal space — it's about how the addition presents to the street. Under a heritage overlay, first-floor additions have to sit behind the existing ridge and setback well behind the parapet. Rear extensions have to relate to the original roof pitch and materiality without pretending to be Victorian.
RenoWorx starts every Williamstown extension with the heritage advisor's likely position, not with the internal plan. That way the design that gets drawn is the design that gets built — with a planning outcome we can predict.
Heritage overlay experience
Regular applicant under HO2 and individually listed properties.
Coastal-grade envelope
Flashings, fixings and paint systems specified for bayside exposure.
Terrace-tight construction
Party-wall protection and zero-lot construction sequencing.
Recent work
Featured projects nearby.
Client stories
Trusted by Melbourne homeowners.
"From the first meeting through to handover, RenoWorx made what we expected to be a stressful renovation feel completely manageable. The finish is exceptional — every detail considered, every trade-person professional. We could not recommend them more highly."
Sarah & James
Williamstown · Whole-home renovation
"The level of detail and the quality of the trades was clearly a step above. Our extension feels like it was always part of the original house."
"We interviewed four builders. RenoWorx were the only ones who actually listened. The kitchen is everything we hoped for."
What we deliver
Tailored to Williamstown.
Heritage pre-application
Early conversation with Hobsons Bay's heritage advisor before drafting escalates.
Planning submission
Materiality statement, shadow diagrams, streetscape drawings and neighbour consultation.
Party-wall protection
Structural survey and temporary support on zero-lot Victorian terrace builds.
Structural addition
Steel portals, first-floor framing, roof reconstruction and tie-ins to original brick.
Coastal envelope
Cladding, flashing and fixings specified for long-term bayside performance.
Fitout & handover
Internal trades, joinery, finishes and defect-period walkthrough.
Why RenoWorx
Why Williamstown homeowners choose us.
Three decades earning the trust of Melbourne homeowners — through the quality of our work, and the way we work.
- 01
Local knowledge
We know the housing stock, council requirements and trades in your area.
- 02
Transparent pricing
Detailed scope and a fixed quote upfront — no vague allowances or surprises.
- 03
Respectful sites
We protect your home, communicate weekly, and leave each day tidy.
- 04
Built to last
Quality fixtures, considered detailing — workmanship warranty included.
The Renoworx Standard
Where engineering meets artistry.
A degree-qualified engineer and a craftsman obsessed with the finish. The best renovations happen when the planner and the builder are in total sync — that's the Renoworx duo.
Director
Matthew
Degree-qualified engineer with 30 years on the tools. Leads project management, supervision and client liaison.
Lead Craftsman
Oscar
Master of the Renoworx Finish — perfect floor falls, laser-straight tile alignment, gallery-grade detail.
Ready when you are
Plan your Williamstown extension
Book a site visit. We'll read the overlay, sketch what's likely to be approved and come back with a fixed-price path.
Our process
A clear path from first call to handover.
01
Consultation
We meet on site to understand your vision, your home, and what success looks like.
02
Design & quote
Detailed scope, fixed pricing, design coordination with our trusted partners.
03
Build
Skilled trades, weekly updates, a clean and respectful site from start to finish.
04
Handover
Walk-through, defect-free finish, and a workmanship warranty you can rely on.