Premium alterations and additions for Sydney homes

Plan My Alteration

Integrated architectural design and construction services

As families grow and lifestyles evolve, many homeowners find themselves needing more space without wanting to leave the neighbourhood they love. Thoughtfully designed alterations and additions can transform the way a home functions while significantly increasing its value.


At Henry May, we specialise in premium residential alterations and additions throughout Sydney. Combining architectural design and construction expertise under one roof, we create seamless extensions and remodels that feel like a natural continuation of your existing home.


Whether you're expanding a heritage terrace, reconfiguring a family residence, or undertaking a major structural transformation, we deliver projects tailored to the way you live.

Expanding possibilities without compromising design

Successful additions require more than simply creating extra space. The new work must integrate seamlessly with the existing structure while improving flow, functionality, and natural light.


Our team carefully considers every aspect of your project, including planning requirements, structural implications, heritage considerations, and future flexibility. By managing both design and construction, we ensure every decision contributes to a cohesive and well-executed result.


From initial concepts through to construction, we guide you through the process with clear communication and expert advice.

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Personalised solutions for changing needs

Our architect-builder model creates a more efficient and collaborative renovation experience.  The result is a smoother process and a home that feels thoughtfully designed rather than simply extended.

  • Design and construction managed by one team
  • Early buildability and cost planning
  • Architectural expertise throughout the project
  • Streamlined communication and decision-making
  • Premium construction quality
  • Detailed project management
  • A single point of accountability from start to finish

Download your complete guide to a stress-free build.

Download your complete guide to a stress-free build

Why choose Henry May?

Our architect-builder model creates a more efficient and collaborative renovation experience.  The result is a smoother process and a home that feels thoughtfully designed rather than simply extended.

  • Design and construction managed by one team
  • Early buildability and cost planning
  • Architectural expertise throughout the project
  • Streamlined communication and decision-making
  • Premium construction quality
  • Detailed project management
  • A single point of accountability from start to finish
  • Do I Need Council Approval for Alterations and Additions?

    Approval requirements depend on the scope and location of the project. Larger extensions and structural changes typically require council approval or complying development certification. We manage the process on your behalf.
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  • Can I Remain in My Home During Construction?

    This depends on the extent of the work. Some projects can be staged to allow occupancy, while larger renovations may require temporary relocation for safety and convenience.
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  • How Much Value Can an Addition Add to My Home?

    A well-designed addition can significantly increase both property value and functionality. The outcome depends on location, design quality, and how effectively the new space integrates with the existing home.
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  • What Types of Homes Do You Work On?

    We work on a wide range of high-end residential properties, including heritage homes, terraces, contemporary residences, and architecturally designed homes throughout Sydney.
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Henry May

Eastern Sydney

Create more space without compromising design

If you're considering extending or reconfiguring your home, call us or complete the enquiry form to discuss your ideas and explore the possibilities.

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