Our website: http://www.urbacon.com.br/
The first version of the logo was a letter "U" with the shape of a shovel inside, that was also the shape of a house.
After a few years, the company started to open subsidiaries, so the focus of the logo moved from the word "Urbanizadora" (which meant what the company did) to the name "Concórdia", and the word "Urbanizadora" became a slogan.
But now we are going back to our roots and focused only on the original business again, so we are open to a revised version of our original logo too.
*** IMPORTANT ***
We will only change the symbol for something new if we really love it, as we think that the logo on the file "Concordia Old Logo 02.png" is very timeless (specially with the trending flat designs) and it is really well known by our market already.
Some of the designs submitted so far have the potential for that, but the vast majority have not.
So if you don't have an inspiration to do something VERY clean, modern and meaningful, you'd definitely have a better chance getting inspired by taking a look at the logo evolution of brands like PEPSI, APPLE, XEROX, STARBUCKS, GOOGLE, SHELL, WINDOWS, etc, and trying to apply this trends to the logo on the file "Concordia Old Logo 02.png", modernizing font style and colors, and showing some renderings of your version of the logo.