The honest answer: a caulking quote is affected by metres, access, old sealant removal, substrate, product type, site timing, and how clean the finish needs to be. A simple new-build finish line is different to a failed wet-area strip-out or an exposed external movement joint.
Lineal metres are only the start
Metres matter because they show the size of the job. But two jobs with the same metres can be very different. Ten metres of clean splashback sealing is not the same as ten metres of failed bathroom silicone that needs removal, cleaning, drying, and re-sealing.
Strip-out and prep change the job
Old silicone, failed polyurethane, mould, dust, water, paint residue, and loose backing can all slow the job down. If the existing material has failed, the quote needs to allow for proper removal and preparation, not just a fresh bead on top.
Access and staging matter
Access can be simple, awkward, high, wet, occupied, or tied to other trades. Commercial jobs can also involve induction, parking, staged access, after-hours work, or handover timing. Those details affect how the work is planned.
Product choice matters
Bathrooms, kitchens, pool surrounds, external joints, control joints, and fire-rated scopes do not all use the same product family. The right product depends on movement, water, UV, substrate, traffic, paintability, and project requirements.
What changes the price fastest
Brandon would check the joint type, rough metres, old material condition, substrate, access, timing, and whether the job is repair, full strip-out, new work, or commercial scope. That is why photos and rough measurements are more useful than asking for a square-metre rate.
Send clear photos, rough metres, suburb, timing, and any access notes. If the job can be priced from that, Brandon will quote it. If more detail is needed, he will say what is missing.