The following announcement was written by the folks at Findmypast:
BRAND NEW RECORDS
Ireland Valuation Office Books contains just under 2 million records. The collection houses several types of manuscript records from the Valuation Office in Ireland including field books, house books, quarto books, rent books, survey books, and tenure books. All of these books helped to inform the publication of Griffith’s Valuation; a comprehensive assessment of the rental value of Irish lands and property from the mid-1820s to the mid-1850s.
Each record includes both a transcript and an image of the original document. The amount and type of information will vary depending on the date and nature of the document. Images offer additional information, particularly about the land being assessed. Some book types, such as tenure books, include notations about the property as well as notes on the cost of rent and any additional observations. House books also often include descriptions of a property and its various components, such as notations of office, barn and piggery. Quarto books include observations about the tenement.