Adding content to 2 domains?

Hey everyone long time since ive posted but am back with a new question.
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We run a number of financial websites, mainly a mortgage site and a commercial site.

These sites are both on the same host and domain provider, 1 is about residential mortgages and another is about commercial mortgages.

We want to have a section on both sites about london, one about mortgages in london on the residential mortgage site, and one on commercial mortgages in london for the commercial site, the content would be different.

Would google see this as duplicate content or an attempt to mirror? we realise the smiliarities but this is legitamate as london residential and london commercial mortgages are different?

Thanks

If it has different content... then I think it's okay... but I'm a SEO-noob.

Sounds like you will be fine. They are disassociated sites offering differnet content. I don't see anything close to a problem. Comment: Why aren't you running just one site with separate commericial and residential sections? It will take half the SEO work and be more of a keyword magnet and give you more mass. Usually, sites along the same theme (properties, mortgages, home loans, commercial property, real estate, leases, etc.) can be combined to give more juice within the search engines, i.e. the SE SERPs.

If they are/will be heavily interlinked I'd keep their content as dissimilar as possible...

True say both sites could be merged, but then again i think the seperation of sites allows me to concentrate phrases on a particular domain for maximum exposure, also in our industry, its better to have a website specialising in one core i.e. mortgages and commercial mortgages.

Thanks for your help :d