Major Renovations, Extensions & High Performance Custom Homes

Two Hammers Construction is a custom home builder specialising in major renovations, extensions and high performance homes across Yallingup, Dunsborough, Augusta, Eagle Bay, Margaret River and the wider South West.

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Whether you’re reimagining your current home or starting fresh, Two Hammers specialises in creating beautiful homes, built for our South West lifestyle.

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What Services We Offer

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Major Home Renovations

A major renovation should do more than make an old home look new.

We improve the way your home functions, flows and performs while respecting the character and potential of the existing building. From reworking tired layouts to improving thermal comfort, natural light and energy efficiency, we approach every renovation as a considered transformation.

Not just a renovation. A better way to live.

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High Performance Custom Home

A high-performance home isn’t about adding a few fancy products.

It’s about how the whole building works together. Insulation, glazing, airtightness, ventilation, moisture management and orientation all play a part in creating a home that feels warmer when it’s cold, cooler when it’s hot, fresher, quieter and more comfortable.

We build architectural, energy-efficient and healthy custom homes around your site, your lifestyle and the way you want to live

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Home Extensions

Need more space without leaving the place you love?

We design and build thoughtful extensions that feel connected to the original home rather than added on as an afterthought. We consider the existing structure, your lifestyle, the site and the South West climate to create spaces that feel natural, comfortable and built to last.

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Sustainable & Solar Passive Design

Good sustainable design starts before construction.

We consider the site, orientation, shading, natural ventilation, materials and energy use from the beginning. Solar passive design can help your home make better use of the sun, reduce reliance on mechanical heating and cooling, and remain comfortable throughout the seasons.

For clients interested in Passive House or Passivhaus principles, we can discuss how high-performance building strategies may be incorporated into the design and construction of your home.

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About Two Hammers Construction

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You love where you live, but the house itself isn’t quite keeping up.

Maybe it needs more space. Maybe the layout no longer works. Or maybe it’s time to make your home more comfortable, efficient and better suited to the way you live.

At Two Hammers Construction, we work with homeowners to transform existing homes and create new ones from the ground up. Our work includes major renovations, extensions and architectural custom homes designed for comfort, durability and long-term liveability.

Founded by Stefan and Ashua, Two Hammers combines more than 25 years of construction experience with creative design knowledge and a strong understanding of building performance.

We don’t believe in doing things just because they’ve always been done that way. We think carefully about how a home looks, how it performs and how it will feel to live in for years to come.

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Two Hammers design & build process

From the first sketch to the final detail

A well-built home starts with a well-considered process.

We bring design, costing, planning, approvals and construction together so the important decisions are made with clarity from the beginning.

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Initial conversation

We start by understanding your home, your site, your ideas and what you want to achieve.

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Design and feasibility

We explore the possibilities, consider buildability and provide early cost guidance to help shape the project realistically.

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Planning and approvals

We help coordinate the necessary planning and approval requirements before construction begins.

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Construction

Our hands-on approach keeps the details, decisions and workmanship connected throughout the build.

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The final result is a home that feels like yours, performs properly and is built for the long term.

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We design, build & transform homes.

We specialise in Major Renovations, Extensions, Energy Efficiency, Sustainability, Solar Passive and Passive House (Passivhaus) homes

Tell Us About Your Project

Why build with Two Hammers?

Thoughtful design & building know-how

We understand that good design needs to work in the real world. Every project balances aesthetics, function, buildability, performance and budget.

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South West of WA Experience

Building in the South West means responding to coastal conditions, changing weather, local landscapes and the way people live here. We design and build with the region in mind.

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A high-performance approach

Comfort, energy efficiency and healthy indoor air quality should be considered from the start, not added as an afterthought.

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Personal, collaborative service

You won’t be passed from one department to another. We keep communication clear and decisions considered, working closely with you throughout the project.

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Design and build across the South West

We work with homeowners across of South West of Western Australia:

Augusta, Busselton, Dunsborough, Eagle Bay, Yallingup, Margaret River and Surrounding areas.

Open-concept living area with gray sofa, round black dining table with four chairs, and a bedroom visible through sliding barn doors. The space has hardwood floors, modern decor, and natural light from a window with a green tiled wall behind the dining area.
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Open-concept living room and kitchen with vaulted ceiling, white walls, wood flooring, a blue sofa, a dining table with chairs, a wood staircase with glass railing, and large windows bringing in natural light.
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What Our Clients Say

Modern house with large glass windows and balcony, surrounded by desert plants including a large aloe vera in the front yard.

"My new house now stands proudly in Margaret River WA. Two Hammers Construction designed, obtained all necessary permits, and built my new house on time and on budget. A no stress journey. I recommend this builder to anyone wanting a quality product. A contented customer."

- Nino

Modern bathroom with a standalone white bathtub, gold towel warmer, walk-in shower with gold fixtures, and a wooden vanity with a white sink.

"We absolutely love our renovation. Our new bathroom, kitchen and walk in wardrobe that were designed by Two Hammers are beautiful. We couldn't be happier."

- Dave

Frequently Asked Questions

  • We specialise in major renovations, extensions and high-performance custom homes. Our work may include architectural homes, energy-efficient homes, sustainable building projects and homes incorporating solar passive or Passive House principles.


  • Yes. We work across Yallingup, Dunsborough, Eagle Bay and the wider South West region.

  • Yes. We work with homeowners who want to improve the space, flow, comfort and performance of an existing home. We consider both the original building and the way you want to live in it going forward.


  • A high-performance home is designed to be more comfortable, energy efficient and durable. Its performance depends on the building as a whole, including insulation, glazing, airtightness, ventilation, orientation and moisture management.

  • Yes. We use considered design and construction principles to support comfort, lower energy demands and long-term liveability. The right approach depends on the site, design, materials and goals of each project.


  • Solar passive design uses the site, orientation, windows, shading and natural ventilation to help regulate the temperature and comfort of a home. It is considered during the design process rather than treated as an add-on later.

  • We can discuss how Passive House or Passivhaus principles may be incorporated into your project. The specific approach will depend on the design brief, site, performance goals and certification requirements.

  • Yes. We can help bring together design, feasibility, costing, planning, approvals and construction. We also enjoy collaborating with architects and designers when you already have a design team in place.

  • The earlier, the better. Involving a builder during the early stages can help identify buildability considerations, provide more realistic cost guidance and support better design decisions before plans are finalised.

  • We build throughout Yallingup, Dunsborough, Eagle Bay, Augusta, Margaret River, Busselton and the wider South West of Western Australia.