Go and check some in different areas and see how hard/soft/clay etc it is. Estimate a small area ( ie. break it into sections ) and work out how long and add up all the individual sections. THEN GENERALLY ADD SOME TO THIS! Ask if she wants any regular garden maintenance?? There are going to be a heap of requests for this type of work in next few months Andy. Try to get them as a regular for maintenance AND then charge top dollar if you cant. You will not have enough time for all the requests you are going to get -TRUST ME
. Even my regualars who do not want regular garden maintenance will fall under this category as I just dont have enough time to FIX THE PROBLEMS WHEN THEY HAVE BECOME A HUGE MESS DURING SPRING. I will request to have them on a regular program and clean it up over a period of time and then KEEP IT TIDY! Many people just dont know what they are in for if the rain keeps coming then the sun comes out
About mid September its gunna go "bang"
just before the mighty pies do it to whoever make it also - they also wont know what hit them!!