real estate logo

I need a logo for Real Estate Company. My company will handle commercial, residential, industrial, business opportunity and land. I need standalone logo, letterhead, fax cover and business card design. I currently have a website [login to view URL] and we are planning to use this website and modify and change the name to Crown Realty. The website will be [login to view URL] (not up yet) My choice of colors are royal blue, gold, dark green and purple. You do not have to use all 4 colors. I would like my logo to resemble a building rather than a house. I like balanced look (not heavy on either left or right side) For business card: I want to have each sales agent to have a choice of putting their Mobile number. If one decided to put his or her mobile number they could maybe put it in. Is it possible to get logo in black & white version for newspaper advertising?