Croydon South, Victoria, Australia
Call Us Now: 
Passive Homes In Box Hill
Where Smart Design Meets Sustainable Living
At Coy’s Constructions, we design and build passive homes and energy efficient renovations across Box Hill, Box Hill North and Box Hill South. Our homes are quiet, comfortable year round and light on energy use without compromising on design.
Why Build a Passive Home in Box Hill?
Box Hill’s tree-lined streets and generous blocks are ideal for high performance homes. With airtight construction, serious insulation, high performance glazing and balanced ventilation, your home stays warm in winter, cool in summer and healthy all year, while keeping bills low.
Passive Home Services
Insulation upgrades to roof, walls and slab, matched to Melbourne’s climate
solar-ready, efficient systems: heat-pump hot water, induction cooking, zoned climate control
Our Renovation and Building Process
Coy’s Constructions have carefully refined our renovation and building process to ensure that your project is simple, stress free, delivered on time and budget.
Call, email or use our contact form (you can also book a call). We’ll ask a few easy questions to understand your goals and where you’re up to.
Tom our owner and ideas lead visits your home or site to assess what’s feasible, discuss options and answer your questions.
Covers the upfront costs for information, working drawings and application fees so a contract can be prepared. You’re not locked in just covering preliminaries. Includes a draft sketch.
We meet again to capture your brief and inspiration, then work with our designer to produce sketches used for formal quoting and budget alignment.
You receive an estimate based on standard inclusions plus any upgrades/wish-list items. Nothing’s fixed yet tweak away and Tom will advise on improvements.
Final construction drawings are prepared for council submission. You review every detail; once approved, we provide final costings.
Review and sign your contract, receive your Homeowners Warranty Insurance certificate, and pay a 5% deposit. We organise the building permit and schedule your build cue the champagne!
Why Choose Coy’s Constructions
- 17+ years of residential building across Melbourne’s east
- Deep local knowledge of Whitehorse planning and neighbourhood character
- Proven Passive House detailing and airtight construction expertise
- Transparent timelines, tidy sites and quality finishes that last
We also work in Mont Albert, Surrey Hills, Blackburn, Balwyn, Burwood, Doncaster and surrounding suburbs
Recent High Performance Work Nearby
From period renovations brought close to retrofit standard to new high-performance builds, our projects across Whitehorse show how smart detailing delivers comfort, quiet and durability.
FAQs about Building Passive Homes in Box Hill
Do I need council approval to build or renovate in Box Hill?
Most extensions and all new builds require a building permit; many also need a planning permit due to overlays in the City of Whitehorse. We assess this early and manage the approvals for you.
What makes a home “passive” and why is it worth it in Box Hill?
A passive home uses airtight construction, insulation, high-performance windows and MVHR to keep temperatures stable with minimal heating or cooling ideal for Melbourne’s climate and Box Hill’s leafy streets.
Can you retrofit my existing Box Hill home to passive standards?
Yes. We upgrade the envelope (membranes, insulation, glazing), improve airtightness, and add MVHR and efficient services. Where full certification isn’t practical, we target the biggest comfort and energy wins.
Do I need council approval to build or renovate in Box Hill?
Upfront costs can be higher for better windows and detailing, but running costs drop significantly. We provide itemised budgets so you can see payback and options clearly.
How long does a passive build or renovation take in Box Hill?
Timeframes depend on scope and approvals. After design and permits, allow a clear construction program; we share milestones and progress updates throughout.
What heating and cooling do you recommend?
We pair the passive envelope with high-efficiency split systems (or hydronic where suitable) and MVHR for clean, balanced fresh air with very low energy use.
Are there rebates for efficiency upgrades in Victoria?
Rebates for heat-pump hot water, efficient appliances and solar come and go. We point you to current schemes and help you plan around them.
Thinking of Building a Passive House in Box Hill?
Whether you’re planning a new passive home or an energy-efficient renovation, Coy’s Constructions delivers healthier, quieter, low-energy homes made to last.
Ready to begin? Get in touch to discuss your Box Hill site, goals and budget, and we’ll map a clear path from concept to handover.