Build a room-by-room list
For a Penzance refurbishment, give each room its own short list: walls, ceiling, boarding, repairs, coving and decoration. Include photos labelled by room so the details are easy to follow. GRE Plastering works for the private and commercial sector, so say whether the property is a home or business and whether it will be in use during the work.
Agree what belongs in this stage
Some rooms may need preparation and plasterboarding while others are ready for a plaster finish or decorating. Explain which work is part of the current enquiry and which is planned for later. Mention any other trades and access commitments. You can then discuss the scope and availability with Garry without treating every room as the same job.