The easiest way to create a printable "For Sale" sign for standard 8.5 by 11-inch paper with a household printer is by using Microsoft Word. Type "For Sale" in the font of choice and a text size of at least 50 points. Change the page orientation to "landscape" on the Page Layout tab in the Page Setup group and increase the font size as desired to fill the space.
The text color may be changed by selecting the text, clicking the arrow next to "font color" in the top bar and selecting the desired color. Create a page border for the sign by clicking the Page Borders button on the Page Layout tab in the Page Background group. Click "Box" in the Settings section to apply the border to the entire page. Select a line style from the Style section in the middle of the screen. Select a line color from the Color drop-down menu. Select a line width and click "OK." The line border is applied to the document.
If Microsoft Word is not available, a similar sign may be created in Microsoft Paint, Byword, Google Docs, iA Writer, Notepad, OpenOffice or Evernote. A more decorative sign may be created in Adobe Photoshop.