Over 20 Years Experience


Residential & Commercial Design

Duplex Designs in Sydney, Newcastle, Central Coast & Surrounds

Our team are the experts in duplex plans in New South Wales

Sorensen Design has been producing award winning duplex designs since its inception in 2002. All of our staff are fully qualified and are passionate about duplex plans. Sorensen Design and Planning are experts in duplex design, whether your duplex plan needs to be a side by side or a detached dual occupancy, Sorensen Design have the skills and expertise to manage your project from concept to building. Sorensen Design was awarded the 2015 duplex design of the year for the Building Designers Association of Australia (BDAA). This being a prestigious award exemplifies our knowledge of duplex designs. Our director Adrian Sorensen is an accredited professional chartered building designer with the BDAA, with over 25 years of building design experience. Additionally, Adrian has structural engineering qualifications which ensures that your duplex does not only look sensational, but is practical to build as well. We take care of the entire council application process and organise all sub consultants. Sorensen Design are HIA green smart accredited and also have in house accredited nathers energy rating specialists, ensuring that your duplex is sustainably designed. We have in house Building Code of Australia (BCA) and disabled access consultants, ensuring your duplex design runs smoothly.

Sorensen Design can give advice on costings and the practicalities of your duplex floor plans.  Our team uses the latest in 3D building design software, providing our clients with high resolution 3D images and a 3D walk through of the duplex, allowing to visualise the completed work. We provide a prompt and efficient service with same day quotations, as we place a high value on responsiveness and are truly passionate about what we do. Call us now to get your obligation free phone consultation!

Duplex Projects in New South Wales

Why design with Sorensen Design?

Sorensen Design are national award winning building designers and have been established since 2002. We design award winning duplex house plans that have functional floor plans, ensuring your duplex designs and prices are coordinated. We take your wants and desires and produce concept plans of duplex. We take care of all council approvals and of all other consultants e.g. structural engineers, certifiers and home energy rating. You as our client only have to focus on your dream duplex house design. Call us now to get your obligation free consultation!

Why choose us?

  • We have been established since 2002 and are multi-award winning building designers and town planners
  • We have been members of the Building Designers Association of Australia (BDAA) continuously since 2004
  • Our Director Adrian Sorensen is an accredited chartered building designer with the Building Designers of Australia Association (BDAA), with over 25 years of building design experience
  • Sorensen Design & Planning has twice been awarded residential builder of the year in the Housing Industry of Australia (HIA) Housing awards
  • We use licensed copies of archicad software, so we can produce high resolution 3D images of your project
  • All of our staff are fully qualified with multiple years of building design and town planning experience
  • We are a boutique company that services a wide area. However, we only take on a sufficient amount of clients to service them to the highest levels
  • We are familiar with all council requirements, lodging your development application (DA) on your behalf, as well as engaging all other sub consultants e.g. structural engineers and surveyors where required
  • Our most recent award proudly is the 2019 BDAA National Design Award Winner for New Residential Buildings over 450m2 and under $2500m2
  • Winner of numerous other BDAA awards for renovations, new houses, multi-residential design, dual occupancy, alterations and additions, as well as bathrooms, kitchens and interiors
  • We are passionate about what we do!


We found Sorensen Design when we walked through their award winning duplex on Sunset Beach, which was for sale at the time. We engaged Adrian and the team to design our duplex on a steep and sloping block. We can’t believe the result! Adrian and his team are truly experts at what they do and a pleasure to work with.

-  Colin and Barbara Brown