Chiefmall is the largest search engine to find a contractor near you. It is especially focused on home improvement and the construction business, launched by Dave, Alex and team.
The search engine indexes a fairly large corpus of over 420 000 contractors and features geocoding and live indexing ... An interesting aspect of the site is that users can not only search for contractors but also post jobs to all contractors they have searched for. Behind the scene contractors are being matched based on their geographical location and expertise with respect to that job.
More info: ChiefMall
Source:→ Google Blogoscoped