Direct answerUnusual water loss should be measured before repair work starts.
What to check first
Check the plant room for visible leaks.
The existing pool, property access and equipment condition can change the answer. Record what is happening before adjustments are made.
What affects the work
Compare water loss with the pump on and off.
A clear scope should separate inspection, repair and optional improvement work. This makes quotations easier to compare.
When a site visit is useful
A site visit is needed when the answer depends on pipework, water loss, structural movement or the exact equipment installed. Photos can narrow the likely cause but cannot confirm a concealed fault.