Residential con't...

Our Process..

Initial Meeting…

We come to you, at a convenient time and discuss your requirements in detail. We’ll offer advice and suggestions on all facets of design, engineering, approvals, and construction. The first consultation is free.

A day or two after this meeting, we will provide a detailed written quote. Based on your local council requirements. This process ensures minimum delays with council approval.

Preliminary Design…

Once we have been commissioned, we will draw up a draft design based on our discussion. If required, we will provide multiple options for you to explore.


Design Meeting…

We come out to see you again and discuss the proposed design(s) in detail and take note of any changes that may be required. After this meeting, the drawings are updated as required for design sign-off. Optional 3D drawings are also presented to help envisage your new home/extension.


Construction drawings…

Once the design is signed off, we then proceed to detail up the plans for the Construction Certificate. This will include all measurements including window and finishes schedule to ensure a smooth build.

These drawings can then be provided to the Structural Engineer and other external consultants as required by your local council. Builders will also be able to quote off these plans.

Our client can submit the plans to the Council to save cost or we can submit them for you. We will help you fill out the paperwork for the Development Application.


Approval …

Our support does not stop there, we ensure your plans are approved and any changes required by the council are made free of charge, we aim for these to be minimal.

We also answer any questions your builder may have during construction.


What we provide…

Development Application (DA) and Construction Certificate(CC) documentation that complies with your Local Council requirements or Complying Development Certificate (CDC) through a Private Certifier.

What is the difference between a DA and a CDC?

A Development Application (DA) is a merit-based assessment conducted directly through the local council. Complying Development Certificate (CDC) is a combined planning and construction approval process. It is designed to enable straightforward development applications to be fast-tracked.

All Architectural design & documentation include –

  • Conceptual sketching
  • Architectural drawings
  • Compliance schedules
  • Window schedule
  • BASIX Certificates (Building Sustainability Index)
  • Shadow Diagrams
  • Waste Management Plans
  • Statement of Environmental Effects
  • Arrange and Coordinate Engineering and/or Hydraulic Plans as required.


  • 3D modeling and colour visualisation

What Our Clients Say...

“This was our 2nd project with obrien design + drafting. Adam is very knowledgeable of BCA requirements, a very good communicator and gives fast turn around. He provided various options then fined tuned the chosen design. The plans were accurate and detailed which made construction easy. I highly recommend their services, we couldn’t be happier.”

Wayne - Kellyville

“We used obrien design + drafting for our extension and would highly recommend them to anyone. They were enthusiastic and professional throughout the entire process and their customer service was excellent.”

Angela - Silverdale


“What a refreshing change to have dealt with this business who care about your project as if it were their own."

Martin - Agnes Banks

"I have been a client of Adam O’Brien at Obrien Design & Drafting for the past 4 years. Adam is a true professional. He takes pride in his work, is creative and innovative, and the results speak for themselves as the end product is impeccable and well presented. Adam delivers when he says he will deliver. He is always willing to help whenever there are issues that need to be resolved and is always available when I need to contact him. And to top it off, he is an all-round nice person who I would recommend to anyone looking for an architect." 

Anthony S - Five Dock

"O’Brien design helped us make our dream home become a reality. They designed our home, completed all plans, and helped us with the approval process. We have been in the house for over a year and could not be happier. Adam was very professional and always went out of his way to assist us with any questions we had. We would highly recommend O’Brien design."

Kirsten M - Wallacia

"Very professional, always willing to help with every issue we had along the way. Assisted with our DA & basix, made it very easy to deal with the council I would definitely use Adam again for our next build."

Steve B - Silverdale


3D graphic we created for one of our developers in Western Sydney.

1st-floor addition

Here we have the original home, completed 1st-floor addition, and the 3D image at Kellyville.

Get in Touch
PO Box 7612,
South Penrith, NSW, 2750

0413 604 092

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