• Our objective is to design meaningful architectural spaces, whilst conserving Melbourne’s heritage places
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  • 25 William Street
  • Cremorne Victoria 3121
  • hello@trethowan.com.au
  • T 03 9421 5448
  • Follow us on Instagram
The Fifth Province
Commercial
  • Heritage,
  • Restoration
Greenline Project Hub
Institutional
  • Heritage
Malvern East House
Residential
  • Architecture,
  • Heritage,
  • Interiors
Barwon Heads Golf Club
Commercial
  • Heritage
Queen Victoria Market Shed Restoration
Commercial
  • Heritage,
  • Restoration
140 Flinders Lane Melbourne
Commercial
  • Restoration,
  • Heritage,
  • Interiors
271 Spring Street
Commercial
  • Interiors,
  • Heritage,
  • Restoration
563 Bourke Street Melbourne
Commercial
  • Interiors,
  • Heritage,
  • Restoration
Bellarine Peninsula House
Residential
  • Restoration,
  • Heritage,
  • Interiors
Emporium Melbourne
Commercial
  • Heritage,
  • Restoration
Cremorne House
Residential
  • Heritage,
  • Architecture
Firbank Grammar – Hindley House
Institutional
  • Architecture,
  • Heritage,
  • Interiors
Armadale House
Residential
  • Architecture
East Melbourne House
Residential
  • Architecture,
  • Heritage
Malvern House
Residential
  • Architecture,
  • Interiors
St Peter's Eastern Hill Plaza
Institutional
  • Restoration,
  • Heritage
Anglican Diocese of Melbourne Offices
Institutional
  • Interiors,
  • Restoration,
  • Heritage
Queenscliff House
Residential
  • Architecture,
  • Heritage

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  • © Trethowan 2025

Our Office

  • 25 William Street
    Cremorne Victoria 3121
  • hello@trethowan.com.au
  • T 03 9421 5448

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