Why quotations for the same house can differ
It is common to receive proposals that differ substantially for what appears to be the same installation. In most cases the difference is not the margin — it is that the proposals describe different configurations, or cover a different scope of works.
The two most frequent causes are exclusions and optional items. A proposal that leaves out the supporting structure or the electrical works will present a lower figure than one that includes them, without either being wrong. We would recommend comparing what is covered before comparing what is charged.
