At Blaise Building Services, we believe in improving the living conditions of every human and looking after the planet by providing a healthier environment through high performance construction. Our aim is to make healthier, more economical and sustainable homes the new norm.
Blaise Building Services is a dedicated high-performance home builder in Sydney, constructing bespoke custom homes across the Eastern Suburbs. As a certified performance home builder, we use building science to deliver custom homes with stable indoor temperatures, zero risk of mould, and healthy indoor air.
Ready to start? Book your On-Site Feasibility Study with Stephane. One hour on-site. No obligation. Full audit of your property, your goals, and your build viability.
Reduction in heating and cooling demand vs standard builds
Mechanical ventilation eliminates condensation at the source
Delivering high-performance builds in Sydney's Eastern Suburbs
Blower Door Tests at framing, rough-in, and lock-up — not just handover
Standard custom building in Sydney often focuses solely on aesthetics, leaving thermal performance to minimum code requirements. This unscientific approach results in drafty frames, internal condensation, and rooms that require constant, expensive mechanical heating and cooling to remain livable.
As an experienced energy-efficient home builder in Sydney, we prioritise your home's building envelope first. By focusing on insulation continuity, vapour membranes, and high-performance glazing during construction, we build homes designed to manage heat and moisture naturally — providing superior thermal comfort year-round.
Read Our Carpentry Standards Story
A high-performance home uses structural physics rather than active heating and cooling to keep your family comfortable. Our performance-focused design delivers four verified outcomes on every build.
Your home maintains a consistent indoor temperature in every room, regardless of outdoor conditions — no cold bedrooms, no hot living areas.
Proper mechanical ventilation and continuous thermal detailing eliminate the condensation that causes black mould in standard homes — permanently.
Our heavy, insulated envelopes and airtight double- or triple-glazing block out traffic noise, ocean winds, and suburban sound intrusion.
Your home operates with a fractional carbon footprint, maintaining a healthy indoor environment and dramatically reduced energy bills throughout its lifetime.
Building a high-performance custom home requires a disciplined, collaborative pre-construction phase. Through our Early Construction Involvement (ECI) process, we work alongside your architect during the design development stage.
We produce a detailed Quick Building Estimate and audit material specifications for cost, constructability, and airtightness before drawings are submitted for approval — ensuring our contract reflects documented construction realities.
Review Our Step-by-Step Build ProcessWe join at the schematic stage to review detailing, airtightness specifications, and material selections for buildability — before any DA fees are committed.
A detailed, itemised cost model aligned to your specific drawings using 3D SketchUp takeoffs — no ballpark figures, no post-contract surprises.
Every insulation junction, membrane detail, and thermal bridge point is reviewed on paper before construction begins — protecting your performance outcome.
With all specifications documented, we sign a fixed-price contract that reflects real, verified costs — delivering budget certainty from site start to handover.
Stephane has answered three of the most critical questions we receive from custom home buyers seeking performance-focused design.
A high-performance home is a custom residence engineered to specific building-science targets rather than built to code minimums. It utilises continuous insulation, airtight construction, and balanced heat-recovery ventilation to deliver verified thermal comfort, healthy air, and extremely low energy bills.
We eliminate cost risks early. By collaborating with your architect during the schematic stage, we align material specifications with your actual budget before final drawings are finalised — ensuring our contract reflects documented construction realities, preventing costly variations during construction.
A renovation needs a high-performance approach if the existing home suffers from drafty bedrooms, damp walls, internal mould, or astronomical energy bills. Surface-level cosmetic upgrades do not change how a home feels; a high-performance renovation focuses on upgrading the building envelope to restore year-round comfort.
Every project below is a physically tested, high-performance build constructed in Sydney's Eastern Suburbs.
High-Performance
A precision high-performance build in the Eastern Suburbs with a thermally broken envelope, continuous insulation, and verified airtightness at handover.
Custom Performance Build
An architect-led high-performance rebuild combining structural steel, European-standard finishes, and a fully certified Passive House building envelope.
Performance Certified
Australia's first structural rooftop garden on a certified high-performance Passive House, with a verified airtightness result of 0.9 air changes per hour.
Selecting an experienced, high-performance home builder in Sydney requires clear technical direction.
Access Our Complete FAQsLess than a standard home. The primary maintenance item is replacing your mechanical HRV air filters every 6 to 12 months, which is a simple task that we support with automated care reminders.
Passive House is the most rigorous, certified high-performance building standard in the world. While a high-performance home applies similar building-envelope principles, Passive House requires formal, completed testing and international certification to verify performance.
Yes, absolutely. You can open every window and door normally. When windows are closed, your mechanical heat-recovery ventilation system runs constantly in the background, supplying fresh, filtered air while keeping dust and allergens out.
Stop relying on active heating and cooling to compensate for a draughty building frame. Speak with Stephane Blaise today to review your custom plans, evaluate your insulation detailing, and secure a Sydney builder who understands the exact science of high-performance construction.
Request Your High-Performance Envelope Audit
