Well, I guess it depends on whether you're commercial or residential, but let's presume you're a bit of both.
The short version is, you have to spend money to make money, but for very little, you can transform your business. Here's some tips for you...
> Flyers (biased I know!), Cheap and effective form of marketing. Get out there for a week, push yourself and you can get 10,000 flyers delivered into homes, businesses and every fish and chip shop / post office / community centre in your area. You will get a response from this, and if you deliver it yourself, you only need pay for the design and print
> Business cards - wherever you are, there's an opportunity. You need GOOD quality business cards, make sure you always have some, your partner has some in case you lose yours, your associates have some, even ask your friends to give them to friends.
> Website - If someone hasn't seen your flyers / business cards, then chances are they'll try and find you on google. Get yourself a nice website, there's people on here who can help you with that and not charge you the earth either.
> Sign Writing your vehicle - Get it done WELL, you need a GOOD design, gone are the days of sticking on vynal letters and it doing the job, it's 2010!!!
> Networking - go to business breakfasts - I bet you could probably attend a networking event every day for a week if you drove a bit.
> Yellow Pages - ahhh, I know, expensive!!! But for your type of trade, it still works, unfortunately you need to pay them A LOT of money.
You have some options there. If you exclude my yellow pages suggestion, you can do all that for less than ?1,500. I know that may seem a lot now, but unless you spend it, you'll stay where you are.
Hope that helps some.