RETROSPECTIVE WORK

Retrospective plans, also known as as-constructed drawings, are drawings prepared after building work has already been completed. They document what has actually been built on site, rather than what was originally approved or proposed.
These drawings are commonly required when existing structures differ from approved plans, or where no approval documentation exists. Retrospective plans provide accurate information to councils, certifiers, engineers, and other consultants to support compliance checks and approval processes. 

Yes. We prepare as-constructed and retrospective drawings for existing structures, including those that may be unapproved or undocumented.
Our role is to accurately document the existing building conditions to assist councils, private certifiers, engineers, or building surveyors during assessment. While retrospective drawings do not guarantee approval, they are often a required first step in addressing compliance, rectifying records, or progressing an approval pathway. 

Councils or certifiers may request retrospective plans when unapproved building work is identified, during property sales, insurance matters, compliance investigations, or when applying for further approvals or extensions.
They are also commonly required when historical approvals cannot be located, or where construction differs from previously approved drawings. Retrospective documentation helps authorities understand the existing structure and assess it against current or applicable building standards. 

Typically servicing across the Wide Bay, Gladstone, and Fraser Coast councils. Blueprint DC is based in Bargara. For select projects, we may also go beyond our core service area by arrangement. 

To prepare retrospective or as-constructed drawings, we typically require access to the site to measure and document the existing structure. This may include floor layouts, elevations, structural elements, and setbacks.
Where available, any previous plans, approvals, survey information, or engineering documentation can be helpful. In some cases, additional input from engineers or certifiers may be required depending on the nature and complexity of the structure. 

Retrospective plans can support the approval and compliance process by providing accurate documentation of existing work. They allow councils, certifiers, and consultants to assess whether a structure meets relevant planning and building requirements.
While they do not automatically approve or legalise building work, they are often an essential component in progressing approvals, seeking certification, or determining whether remedial works are required. 

 No. Retrospective or as-constructed drawings do not guarantee approval. Approval decisions are made by councils, private certifiers, or relevant authorities based on planning controls, building regulations, and technical assessments.
However, professionally prepared retrospective plans significantly improve clarity, reduce uncertainty, and provide the documentation required for authorities to properly assess the existing structure and advise on next steps. 

Yes, strong structural engineering experience! Owner, Matt Bauer, has a structural & civil engineering history, nearing 2 decades. Learn more about Matts history on our About Us page.