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Hey Robert! Though I don't know the complete details of your scenario, you've done a good job providing some clues. Here is what I'd suggest: These do sound like two distinct businesses. There is no obvious connection between a roofing contractor and a window washing company. So, good on this. I am assuming the 2 companies are fully differentiated with different names, phone numbers, separate websites that don't interlink and totally unique content on the two websites. Any other approach would be problematic. However, both of your business models are likely SABs (service area businesses) unless customers are actually visiting either company at the place of business. That seems unlikely for either a roofing contractor or a window washer. If both are SABs, you should be hiding the Google My Business listing address for both. Providing you are doing everything in point #2 correctly, there is no reason not to include complete NAP on each website for the company. You don't need to hide the address on the website or on other citations. You only need to do that on Google, because it's their unique requirement. Hope this helps and please let me know if you have any further questions!

I agree. Just another link. Even nofollow links are good links, but no, this one is not a nofollow link. It's a dofollow as they say..link :).

Additional to the above points, I would suggest adding Canonical tag to the articles. For major articles you can also use Google Webmaster tools to request Google to fetch and index a page, you have a limited number of these requests, so used them wisely.

Google just pushed out a toolbar pagerank update today. http://www.seroundtable.com/june-2011-google-pagerank-13615.html