Watch where the water goes in heavy rain. If it runs off the tarmac to the doorstep, a channel drain or a dished block channel at the door is a smaller job than a new drive. Older estates in town without modern gullies see this most. Edging is what stops resin and tarmac fraying at the sides. Near the sea at Rosses Point and Strandhill, metal restraints rust. Ask what the edge is made of. Blocks are not automatically permeable. Tight joints on a sealed bed act like a slab. Open joints on a permeable bed drain. Ask which you are getting. If your existing blocks have sunk into a dip, more blocks won't fix it. That's the bed and the base. Have one lifted and look underneath. On plots at Drumcliff or Riverstown where the drive meets grass, say if a mower or tractor crosses the edge. It needs a restraint that won't lift. Where the drive meets the public footpath matters. The council won't want your run-off on the road.
Keep a full block drive and an edge-and-channel job apart. Ask for them as separate prices.
Mark where water reaches the door after rain. Say whether you want a whole block drive or an edge on what is there.
On older Sligo estates with no gullies, a channel at the door is often the first useful job.