I have recently begun to take on full permaculture designs for properties and business, this involves details maps/plans, notes and lists of elements to be included.
Some of my information supplied with consultations have previously run to 18 pages of notes with 4-6 plans, so these would probably be classed closer to a full design than a simple 3 hr consultation with a mud map.
My resistance so far to full designs handed over to a client has been my will to see people get involved more in their own plans. I certainly help people with heritage fruits selection and other such long term plantings, but I believe the range available and the nature of taste being so personal that lists of Australian Natives, herbs or veggies a client should plant often take away a chance for the clients to have real meaningful input into their design.
Often great success has come (and reduced costs to the client) through completing a limited design through a consultation and then following up with some implentation and further developement of ideas with the clients onsite.
This way the concepts and principles of Permaculture are firmly embeded in the design and the family has a good understanding of how to advance from there.
I would however look at any request and proceed based on its benefits to the client.
The 8th of July 2007 will in my mind go down as a black day for Permaculture in Australia with my being told that very soon we will see the launch of Jim's Permaculture, after completing the minimum 72hrs ( or abouts) PDC- Permaculture Design Course, they will commence to complete designs and implement them for you through their franchises.
I have waited twelve years making sure I have as many skills as possible to be able to complete a succesful Permaculture design, this is a complex document covering a large range of diciplines, I have completed studied in 31 other subjects plus 2 more planned for next year to build my skills and currently run 12 different courses through my classroom on site.
I am currently teaching & faciltating my 4th PDC course through local a community house using 11 tutors and 12 site visits with a total of 147hrs ( all for $275max due to funding).
I will leave it to you to decide who best to complete a design for your property, business and life.

