Making a cost estimate- first job
This subject has been discussed before and I have read most of these posts. However, I still am missing the key link, which is not how much to charge but how to estimate how long it will take me to put in the plant material. I agreed to do the job on an hourly basis plus materials. I need to give them an estimate on what that will be.
The planting area is easy to dig, all brought in sandy soil which I will amend appropriately. Are there formulas that can be used to estimate? Is there a ball park average time to plant, say for instance a 4' shrub or a gallon perennial? Or should you do it on a sq ft basis, like X sq ft of perennials, X square ft of shrubs? Or do you cost out each plant by adding X percent for labor cost?
This estimating, I'm sure was covered in your degree courses, but I am just a Master Gardener who was asked to do this for an acquaintance.