Answer
There is no reliable average cost for every water-damaged ceiling because the repair scope varies widely. Price depends on whether the leak is fixed, how much drywall and insulation must be replaced, ceiling height and access, available support, texture type, drying and finish time, protection, primer, paint, and related electrical or trim work.
A small stain that needs only finish work is different from a sagging section or a large opening left after mitigation. Texture and paint may also need to extend beyond the visible damage to reach practical transitions. Photos and measurements help with an initial review, but an onsite walkthrough is often needed to define quantities and hidden conditions. Westpeak can provide a written estimate for ceiling drywall repair and texture matching once the moisture source has been corrected.