There are a few ways to determine when a swimming pool was constructed and/or when the barrier was substantially modified or rebuilt.
Preferably, the council or owner can provide documents such as an OC or receipts for building work.
If not, another option is an online mapping tool which includes historical satellite imagery:
- Nearmap: a paid subscription is required.
- Google Earth: a free tool. Tip: use the historical imagery option from the ‘view’ menu (more advice at Google Earth Help).
- SIX Maps: a free tool offered by the Department of Customer Service. It doesn’t have historic imagery but may be used in concert with other mapping tools.