Small damage can have a larger boundary
The visible crack or hole does not always show the full loose area. A repair may need to extend to sound material, be supported or boarded, receive a base coat and then be blended into the surrounding finish. Very small isolated repairs can also carry a minimum visit cost.
Explain what caused it
State whether the damage followed rewiring, a pipe repair, window installation, impact, movement, a leak or a previous failed patch. Active water ingress and structural movement need appropriate investigation before a cosmetic repair.
Making good after services
For electrical chases or plumbing openings, confirm that first-fix work and testing are complete, cables or pipes are positioned correctly and no further access is expected. Photograph the entire route and any deep openings.
Cracks
Record the length, width, location and whether the crack has changed. Cracking around doors, windows, ceiling junctions or extensions may have different causes. A plasterer can assess the finish but is not automatically a structural engineer.
Matching existing texture
Perfectly invisible blending is not always achievable, particularly across decorated, aged or textured surfaces. Discuss the likely repair boundary and whether a complete wall or ceiling will give a more consistent result.
Describe the surfaces clearly
Include the location, approximate dimensions, current condition, desired finish and safe photographs. Sending an enquiry is not confirmation that a business has accepted the job.