griffith valuations for 1848 onwards - how to date the information?

[aghadowey]

Shane hasn't been online for a few months and may not reply for some time but in answer to your question- the valuation revision books which start from the date of printed Griffith's Valuation until c1930 allow you to trace the occupancy of a property. The ones for Northern Ireland have been put online (www.proni.gov.uk) but for the Republic of Ireland you'll need to visit the archives in Dublin.
http://www.moughty.com/blog/the-revision-books.html

[sydpinman]

Thanks aghadowey.
Another avenue to explore.