As-Built Drawings in South Africa: When You Need Them and How They Are Made
Many South African buildings have no plans at all, or plans that no longer match what was built. As-built drawings solve that problem by recording the building exactly as it exists today.
What Are As-Built Drawings?
As-built drawings are accurate, measured drawings of an existing building, typically including floor plans, elevations, sections, a site plan and roof plan. Unlike design drawings, which show what is intended, as-builts show what is actually there.
When Do You Need Them?
Selling or buying a property: to confirm that what is on site matches the approved plans
Regularising unapproved work: as-builts are the starting point for plan regularisation
Renovations and additions: accurate existing information prevents design errors and site surprises
Occupancy certificates: when work on site differs from the approved plans
Schools, churches and commercial buildings: for maintenance planning, space management, fire and accessibility compliance
Lost plans: when the municipality or previous owner cannot supply the original drawings
Leasing and valuations: to confirm accurate floor areas
How We Prepare As-Built Drawings
1. Desktop Research
We obtain the title deed, SG diagram, zoning information and any approved plans held by the municipality.
2. Site Survey
Traditionally, buildings are measured by tape and laser distance meter. At TectArch we also use LiDAR scanning and photogrammetry, which capture millions of measured points in a short site visit. The result is more accurate, especially for irregular, multi-storey or historic buildings. Read more about LiDAR scanning and reality capture.
3. Drawing and Modelling
The survey data is turned into clear CAD drawings or a full 3D BIM model, depending on what you need.
4. Comparison and Report
Where required, we compare the as-built drawings with the approved plans and flag any unapproved work or compliance issues so you know exactly where you stand.
Tips
Start early if you are selling. As-builts and any regularisation take time.
Ask for digital files (DWG or PDF) so they can be reused for future work.
Use a SACAP-registered professional if the drawings will be submitted to council.
How TectArch Helps
We provide as-built drawings for homes, estates, schools, churches and commercial properties across Gauteng, with fast turnaround and the option of a full 3D model.
Book a Site Assessment to get expert advice before you spend on plans.
Written by Mfanelo Hlophe, Architectural Design Team, TectArch Architects.
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