A company is shopping for a new web designer. They are in the property management industry with a total of eight domains. One for the corporate site and the others for the individual communities they own/manage. The question is this: What are the pros and cons with regard to SEO in having one domain for the corporate site with individual internal pages for each community vs keeping the existing structure of eight domains. Different SEO marketing groups give different answers with those known in the property management industry as leaning toward the separate domain structure while straight SEM's with no industry affiliation seem to lean toward the one domain structure. I am looking for a best practice here. All input greatly appreciated.