Most commercial property sites are aimed at either providing an electronic marketplace or producing an electronic brochure. There are, however, a few sites that go further.
One of the best of these sites is a subscription service provided by the Estates Gazette at www.egi.co.uk. Services include a searchable database of the full text of the magazine going back 10 years, plus a comprehensive daily news alert service.
As a large number of reporters work directly for the service, the site manages to secure a number of exclusives which can be accessed online almost immediately. Additionally you can search the full text of the Estates Gazette law reports and planning decisions and access the full text of the many detailed articles contained in the journal.
The main rival to this is another subscription site provided by Focus at www.focusnet.co.uk. Services include:

a daily property news synopsis and searchable news archive together with a database showing details of property deals including lease-break and rent-review dates, planning and ownership details;