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I agree with Matthew's remarks regarding what type of content to write. You'll want to spend a bit of time promoting it as well. Posting it to your social profiles and sending it out to your email newsletter at the very least. In addition, you may find forums or social sharing sites for contractors that would be appropriate places to share your content. You'll want to tread carefully to make sure you're not coming off in a spammy way, but if you're sharing a genuinely useful article and not a sales pitch you'll normally be OK.