The census records, currently available for 1891, 1881 and previous decades can be used for an approximate date.Another source of information may be the original owners of the land; this may have been, for example, a religious trust or a member of the nobility.Most houses either date from a specific time period or reference a particular architectural style.Understanding that style and its design conventions can help you to select and arrange windows that reinforce this intended character.You may be surprised by how much you can learn locally.Ask your neighbours if they know anything about the house.
These are dateable by looking at individual elements.
A wander along a typical Irish street can be a feast for the eyes, highlighting the way in which windows are arranged in an elevation, their glazing patterns and detailing, and their opening format – such as sash or casement – all contribute to our collective national architecture that makes us part of who we are and makes our buildings look the way they do.
This is especially true of Ireland, where most traditional street architecture and vernacular buildings depend upon basic classical rules of proportion and detailing for their architectural effect, rather than applied decoration that is commonplace in other countries.
You may also be surprised at how time-consuming the research can be.
This guide provides advice on how to get started and lists resources which you may find useful.