Blaise Building

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.

Passive House People
BLAISE BUILDING SERVICES

ABOUT US

Blaise Building Services team on site
Who We Are

Our Foundation: A Home Should Protect the People Inside It

A custom home should protect the people inside it, acting as a healthy, quiet sanctuary for your family rather than a source of dampness or cold drafts. At Blaise Building Services, we are not high-volume contractors. We are selective specialists who have spent over 20 years refining our construction approach, delivering bespoke homes that perform to a measurable, certified standard.

Our credentials are built on building science, structural precision, and early design-to-budget collaboration. We work closely with architects and property owners who refuse to compromise on thermal comfort, durability, and occupant wellbeing.

Certified Passivhaus Designer

20+ Years Experience

Blower Door Tested Every Build

Eastern Suburbs Specialists

Architect Collaboration

Design-to-Budget Certainty

Six Reasons to Build with Blaise

20+ Years Experience

Over two decades of hands-on precision building across Sydney's Eastern Suburbs.

3 Blower Door Tests

Three independent tests during construction — not just at handover — to verify airtightness.

Up to 90% Energy Saved

Verified reduction in heating and cooling energy for the lifetime of the building fabric.

Passivhaus Certified

Formally credentialled by the Passivhaus Institut, Germany — the gold standard in high-performance building.

The Founder

Stephane's Story: The Motivation Behind the Practice

Our founder's story is grounded in a personal motivation. Stephane Blaise grew up in France, working with concrete, carpentry, and project management from a young age. This hands-on background taught him to respect structural details and meticulous craftsmanship.

After moving to Sydney with his wife Elise, the family welcomed twin boys who were born premature and structurally fragile. The Eastern Suburbs home they moved into looked perfect on paper and passed every standard pre-purchase inspection. Within months, however, they discovered a silent crisis: the building fabric leaked air, trapped condensation, and developed toxic black mould.

As the children suffered from persistent respiratory issues, the standard construction advice they received was simply to “open a window.”

That experience changed the direction of Stephane's career. He shifted focus to building physics and Passivhaus standards — and founded this practice so that no other family would face the same consequences.

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Stephane Blaise — Director, Blaise Building Services

Stephane Blaise

Director & Certified Passivhaus Designer

How We Build

Our Construction Core Beliefs

We believe that comfort is not a luxury — it is a basic obligation of a home. To deliver on this, our team maintains a strict, client-first process.

Performance is Measurable

We use PHPP software to model and calculate your home's energy use and indoor humidity before we turn a spade of soil. Every decision is backed by building science, not assumptions.

Science Replaces Assumptions

We verify our on-site execution through three independent Blower Door Tests during construction, ensuring our precision values are met at every stage — not just at handover.

Early Cost Transparency

We collaborate with your architect during the design stage to ensure structural buildability and budget alignment, so every decision is resolved on paper before we begin on site.

Our People

Meet The People Behind

We maintain a deliberately small, specialised crew. Stephane personally leads project delivery alongside our senior estimators, site supervisors, and long-standing subcontractors.

Our Credentials

Verified Credentials and Affiliations

We back our technical knowledge with professional industry standing. Every credential listed below is independently verified and current.

Certified Passive House Tradesperson — Passivhaus Institut, Germany

Certified Passivhaus Designer — Passivhaus Institut, Germany

Licensed Builder — NSW Fair Trading

Member, Master Builders Association NSW

Member, Australian Passive House Association

Fully insured — public liability, professional indemnity, and home warranty insurance

Common Questions

Honest Answers to Our About Us FAQs

Taking on a custom project requires an experienced, highly qualified team. Read through our background questions to understand our certifications and track record.

Access Our Complete FAQs

Who is Stephane Blaise and what makes his approach different?

Stephane is a certified Passivhaus designer and tradesperson with over 20 years of hands-on building expertise. Unlike standard project managers who coordinate from an office, Stephane maintains personal involvement in projects, supervising every site to ensure European finishing standards are met on every build.

Why does builder involvement matter on a premium residential project?

When a builder collaborates with your architect early, they bring cost and constructability intelligence to the design table. This ensures the specified materials and high-performance detailing are practically achievable, preventing the costly redesigns and late-stage variations that typically cause budget blowouts.

What qualifications does a Sydney Passive House builder need?

A builder must hold formal, certified credentials from the Passivhaus Institut in Germany. Stephane Blaise holds credentials as a certified high-performance builder in Sydney, which is the gold standard for high-performance residential construction.

Stephane Blaise

About the Author

Written and reviewed by Stephane Blaise. Director, Blaise Building Services. Certified Passive House Tradesperson and Certified Passivhaus Designer (Passivhaus Institut, Germany). Licensed Builder, NSW Fair Trading. Member, Master Builders Association NSW and Australian Passive House Association.

Certified Passivhaus Designer — Passivhaus Institut, Germany
Licensed Builder — NSW Fair Trading
Master Builders Association NSW & Australian Passive House Association