People choose paint by colour and by brand, and then judge the result by how the wall looks in raking afternoon light. That light is unforgiving: it picks out every fastener pop, every ridge of dried compound, every patch that was sanded flat but never feathered out. None of that is a paint problem. It is a prep problem, and by the time the topcoat is on it is too late to fix cheaply.
Prep is unglamorous and it is most of the work. Filling and sanding, yes — but also washing down surfaces so the film actually bonds, caulking the gaps where trim meets wall, spot-priming every repair so it does not flash a different sheen than the wall around it, and masking properly so the cut lines are cut lines rather than a wobble you notice every time you walk past.
Primer deserves its own mention, because it gets skipped most often. New drywall drinks paint unevenly, patched areas drink it differently again, and glossy or previously-oiled surfaces barely hold it at all. Primer evens all of that out so the two finish coats sit on one consistent surface. Skip it and you will be applying a third and fourth coat trying to chase an even sheen you were never going to get.
If you are weighing up a repaint — a home, or a block of hotel rooms — call DEYV Innovation at (571) 867-6133. We are reachable 24/7 and happy to talk through what the job actually needs.