Hi, I am a business coach and I help people figure this stuff out, so here are a few ideas for you to get you moving forward.
If you have not set up your web site and would like an inexpensive option try, www.webstarts.com
. I use them and have been very pleased with the low cost and the user friendly interface. If you want someone to do it for you, check out www.elance.com
and put the job out for bid, you can get a pretty low cost and attractive web site for as little as $50.
Advertising your business means getting in front of the people who need your service, with would be people trying to sell a house, so I would try and make friends with some Real Estate agents who could recommend your service. If you also do professional organizing you may also want to advertise those services. (people need decluttering when moving). It has been my experience that male agents are more apt to recommend you since sometimes female agents like to do this themselves.
I would join a chamber, find some networking groups in your area and get involved. Also if there is a real estate association where realtors meet, see if you can give them some information or get involved in their events.
Don't waste money on newspaper advertising, but perhaps get a list of real estate agents and send out a post card to them. Offer them a referral fee for putting you in front of clients.
Hope that helps.