I'm a landscape designer on the San Francisco peninsula considering concrete polishing as a low environmental impact solution for a back garden. I've never done this before and am learning on the web. Of course, Google gave me a dizzying array of annoying web sites. I just wanted you to know that I found yours well designed, useful and without annoying popups. I've contacted three local contractors that I found there. – Chip Krug in San Francisco
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1. Check references (Ask the company) 2. Check with licensing authorities (http://www.contractors-license.org) 3. Check with the Better Business Bureau (http://www.bbb.org)