You can work as much or as little as you want. People pay way too much for websites, so there's a long tail of customers that you can actually save money and do a decent job for, you just have to seek them out. Many small businesses prefer to work for someone local as well.
Many small businesses are happy to pay $X/month to their web master to keep the site alive as well, since they know nothing about computers. Many web agencies charge over $100/month to do essentially nothing, and charge for change fees.
If you have a very trusted friend or family member to structure a corporation for you, then you can earn a modest 'wage' and they uh, aren't very good at not leaving envelopes full of cash at your place. That part's obviously up to you, probably not legal, but everyone breaks the speed limit now and then.