I'd suggest contacting a local nursery or garden center (not Home Depot), especially one that has experience with organic gardening. While they may not be able to directly supply the labor needed for creating and turning the garden, they may be able to point you in the right direction. Some nurseries employ local college kids who might be interested in making a few extra dollars as well to do the back breaking work of turning a heavy clay soil and adding amendments.

Preparing the soil is one of the most important steps, so either do the research ahead of time and know what you need to make the site suitable for growing vegetables, or ask the nursery or garden center if they can provide the service. Most will be willing to help out, since you're buying supplies from them!

A soil sample can be sent to your local Rutgers Cooperative Extension. Take the soil sample analysis results to your local nursery and ask what you will need to amend the soil. If they can't do this for you, walk out. It's a basic service they should be able to provide. The Cooperative Extension will also be able to provide you with lots of information, and may suggest needed amendments as well.

Here is a link that might be useful: Rutgers Coop Extensions

Oh, one more thing I forgot to mention. In Northern NJ we have deer. Deer like plants - especially vegetable plants. If you don't have an impenetrable fence around your yard, you'll need a fence to keep the deer, rabbits, groundhogs, etc. out of your garden.

Did you ever find a company? I am looking to do this as well

Most people design their own garden, then ask landscapers to do the actual work, mainly cutting trees, setting up garden beds, hauling in compost and mulch, etc.

If you let folks know what town you are in, maybe some members will be happy to help, at least give you some ideas.

I can help. I have a degree in landscape design and management. Send me an email to discuss. stevemaka @ yahoo.com

Gardenary.com. I was certified through their program to install and maintain raised bed kitchen gardens. The website a has listing of certified gardeners around the country, just enter your zip code.