Depending on the job overall, know the common rate of base materials (pallet of mulch/sod or plants) then get an idea of removal work and manpower needed. Base rate is a 25% increase over my cost on supplies / materials. Labor is different depending on number of workers and how much I will be involved myself. Always add 2-3 hours of labor to project as there is always something that comes up that can put you in a bind. I use a plant broker for larger jobs vs shopping myself for smaller jobs at local nursery. Establish relationships with local suppliers and if you can afford it pay for supplies upon delivery vs 15-30 net payment after the job is completed. That has gone along way for me for local nursery I use. This has formed a more respected relationship and when I call for job supplies, they are very helpful with getting things together quickly.
