These examples are only rough guides because every site is different.
A small bathroom with wall and floor tiles may take several working days once preparation, waterproofing, tiling, grouting, and finishing are included. Even if the bathroom is small, the number of cuts, fittings, and drying times can stretch the job.
An open - plan floor may move faster if the surface is flat, the tile layout is simple, and there are not too many cuts. A larger floor can still take longer if levelling is needed or if large - format porcelain tiles are being used.
A shower area can also take longer than expected because waterproofing, falls, corners, trims, drainage, and silicone joints all need care.
The main point is that the final timeline should be based on the site inspection, not only on the square metre size.