Logo Redesign / Improvement

Hi, we are looking for someone to improve on our current logo design. We would like to keep the same colour scheme ie. the light green and black and we like the idea of the maple leaf with the key hole in the middle but are open to other ideas.

KeyCanada.ca Real Estate Listings

Tagline:
The easy way to search for Canadian real estate

Desired Color Scheme:
Main colours black / light green with the option to include terracotta / light blue

Desired Style:
Simliar to zillow.com / trulia.com

Accepted File Formats:
Standard Web Formats (.jpg, .gif or .png); Vector Formats (.eps, .pdf or .ai); Layered Formats (.psd or .tiff)

Please see below links for current logo design and general context in which the logo will be displayed. This is our original design and are please with it but feel it needs a professional touch. The style we are looking for is not to formal similar to zillow.com and trulia.com

Our tag line "The easy way to search for Canadian real estate" should be included in the design as well as "Beta". The inclusion of "Real Estate Listings" in our brand name is optional.

The main colours should be green and black, however, terracotta and a light blue are incorporated into the website so feel free to use different variation with those colours included.

Link to current logo - http://picasaweb.google.co.uk/jayhu…kjHWtQ2WW4
Logo on our homepage -  http://picasaweb.google.co.uk/jayhu…9356667602