No. Ordnance Survey Ireland mapping does not depict legal property boundaries nor do the OSi attempt to show property ownership on the OSi map.
OSI only show the existence of physical features on the ground at the time of survey, which are surveyed to Ordnance Survey Ireland specification and accuracy standards. Although some property boundaries may be coincident with surveyed map features, no assumptions should be made in these instances.
Physical features on the ground change over time, and for this reason, Ordnance Survey Ireland has a continuous mapping revision programme. In the event that there are changes to the physical features on the ground, this may involve OSi surveyors visiting your property so that the mapping can be updated and amended. However, such revision will not affect legal land ownership and title deeds of a property and registered title will not change unless authorised by the Property Registration Authority.
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