GIRARCH specializes in residential design Australia, delivering architectural projects across multiple states with a strong understanding of local planning frameworks, building codes, and construction practices. Since 2021, we have led more than 200 projects nationwide — ranging from secondary dwelling design and granny flat design Australia to major renovations, extensions, and custom homes.
Our Australian projects reflect a practical, buildable approach to residential architecture, shaped by real site conditions, approval requirements, and construction methods. We regularly prepare documentation for DA and CDC approvals and collaborate with engineers, energy assessors, surveyors, and certifiers throughout the design process.
Project types include:
From early concept design through construction documentation, GIRARCH provides clear and coordinated architectural drawings that support both approvals and construction.

This contemporary duplex development in Cessnock is designed to respond intelligently to the site’s steep natural slope while maintaining a calm, residential street presence.
The building is arranged as two mirrored dwellings, each offering generous open-plan living spaces that connect directly to elevated outdoor decks.
This modern coastal home, designed for multi-generational living, sits on a newly subdivided block in Auchenflower—an established Brisbane suburb known for its leafy streets and proximity to the city. With its pitched rooflines, airy interiors, and relaxed elegance, the home blends craftsman charm with contemporary functionality, offerin
This modern coastal home, designed for multi-generational living, sits on a newly subdivided block in Auchenflower—an established Brisbane suburb known for its leafy streets and proximity to the city. With its pitched rooflines, airy interiors, and relaxed elegance, the home blends craftsman charm with contemporary functionality, offering a fresh take on suburban living just minutes from the CBD.
This charming granny flat is located in Chandler, one of Brisbane’s eastern suburbs known for its expansive homesites, peaceful semi-rural character, and family-friendly lifestyle—just a short drive from the city centre.
This revitalized Queenslander, set on a generous inner-city block in Auchenflower, transforms a 1960s home into a timeless residence with seven bedrooms, wraparound verandahs, and a grand two-storey extension. Carefully lifted, reimagined, and expanded, the project preserves the area’s rich architectural character while creating flexible living for a modern family.
This elegant five-bedroom home, located in Gawler Belt, SA, embraces traditional design with a modern lifestyle twist. At its heart is a spacious great room that seamlessly connects to an entertainment room, opening onto a large alfresco area—perfect for gatherings and outdoor living.
This modern farmhouse, designed for a young couple seeking a fresh start in nature, is located in Dewhurst—an idyllic pocket of Victoria nestled in the lush Dandenong Ranges. The rural setting offers expansive blocks, tranquil surroundings, and a strong connection to the outdoors, making it a perfect backdrop for a contemporary lifestyle rooted in simplicity.
This modern, compact home in Cotswold Hills makes the most of its sloping site with large open-plan living areas that feel expansive and airy. Dark exterior walls are balanced by the warmth of timber elements, creating a stylish yet welcoming atmosphere. Designed for comfort and simplicity, the home sits beautifully within its natural surroundings.
Kenthurst, located in the picturesque Hills District of Sydney, NSW, is known for its leafy charm, generous properties, and a perfect blend of rural tranquility with urban convenience. We’ve completed two major renovation and extension projects in this beautiful suburb, thoughtfully enhancing homes that reflect the character of the area.
Located in the Blue Mountains, this traditionally styled studio serves as both a guest house and a creative retreat for the musician homeowner. Surrounded by stunning views, it offers the perfect setting for artistic inspiration.
We optimized the layout of this classic four-bedroom Australian home in Suffolk Park by adding a spacious living room and kitchen extension. An attached granny flat was also introduced, blending seamlessly with the existing structure.
Nestled in the rural landscape of Carwoola, this thoughtfully designed granny flat offers smart living paired with breathtaking views.
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