I spotted some ads on bulletin boards around town offering to convert a patch of your lawn to organic garden. It sounds like you don't have to do anything except maybe wander out and eat what grows there.
This is an idea and a business that is awesome! Folks who are generally sustainable-practices-friendly but have never heard of permaculture tell me, 'I'd do that if someone converts my yard!' I'm wondering how many businesses are doing this, but it just isn't generally well known.
Speaking of converting lawns, I just found a link to a group in California that have created a CSA out of multiple folks' backyards. It sounds like something some people I just met want to start in the Seattle area: http://myfarmsf.com/index.html.
We also run such a company called The Lazy Locavores. We do installs and provide services that include basic coaching to ongoing mentoring and maintenance. We are full time Urban Farmers. WOOHOO!! You can see some of our work this season http://shibaguyz.com .
Don't destroy the earth! That's where I keep all my stuff! Including this tiny ad: