Mapping FAQs

  1. How do I find out if my property is registered?

  2. I have a dispute with my neighbour over where the boundary lies. Can you tell me who is right?

  3. Can I measure my legal boundary precisely from the map?

  4. I believe that there is an error in the registry map, what do I do?

  5. Can an Ordnance Survey Ireland map indicate where my legal boundary is?

  6. What feature does the line on the map represent?

  7. There is a fence and a wall next to each other and only one line is shown on the map, why is this?

  8. I believe Ordnance Survey Ireland’s mapping of my property is incorrect, can I arrange for a surveyor to come out and amend the mapping?

  9. I feel that a feature is incorrectly shown on your mapping; can you tell me why it is represented this way?

  10. I require an Expert Witness to comment on the mapping, does Ordnance Survey Ireland offer this service?

     

1.  How do I find out if my property is registered?

The PRA website www.prai.ie offers a public guide to registration issues.

 

2.  I have a dispute with my neighbour over where the boundary lies. Can you tell me who is right?

No. The Land Registry map is an index map and identifies property, not boundaries. Therefore, we are not in a position to advise. 

 

3.  Can I measure my boundary precisely from the map?

It is not possible even when using the highest order of survey techniques to achieve perfect accuracy when drawing/digitising features on a map. OSI maps are therefore subject to accuracy limitations. This means that scaled measurements between features shown on the map may not exactly match the actual distance measured between the same features on the ground. Different levels of accuracy apply depending upon the scale of the map and the original method used to create it.

Paper maps (particularly copy maps included in deeds) can be subject to distortions and inaccuracies, as any copying processes (such as photocopying, scanning) and printing processes can lead to the distortions in the map image.

 

4.  I believe that there is error on the Registry Map, what should I do?

If you feel that mapping of your registered title is incorrect, please contact Land Registry at the earliest stage to establish if they can assist.

5.  Can an Ordnance Survey Ireland map indicate where my legal boundary is?

No. Ordnance Survey Ireland mapping does not depict legal property boundaries nor do we attempt to show property ownership on our mapping.

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 our 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.

 

6.  What feature does the line on the OSI map represent?

Ordnance Survey Ireland maps use the same line symbol for a wall, fence, hedge, bank, ditch and stream. Where many features are represented in close proximity it may not be possible to represent them all at the scale of the mapping and it may not be obvious from the map which feature the line represents.

Even if a correct interpretation of the map can be made, the line on the map may not be the legal boundary.  It is the position of the actual feature on the ground, not the position of the line on the map that is important in attempting to trace the position of the boundary.

Accurate analysis of the OSI map can usually only be achieved by taking the map onto the site and comparing it with the features on the ground.  This can help decide what has been shown, what has been omitted for the sake of clarity or because the map scale does not allow multiple features in close proximity to be shown.

 

 7.  There is a fence and a wall next to each other and only one line is shown on the map, why is this?

Where a fence, hedge or wall runs approximately parallel to another feature and so close that they cannot both be plotted correctly at the scale of survey, then only one feature is shown. 

8.  I believe Ordnance Survey Ireland’s mapping of my property is incorrect, can I arrange for a surveyor to come out and amend the mapping?

Ordnance Survey Ireland welcomes all customer feedback about the content and accuracy of our mapping. We understand that there may be a delay between changes taking place on the ground and when we are able to capture them within our continuous mapping revision programme. Any issues relating to the content or accuracy of our mapping that fall within our specification will normally be investigated at the next revision of the mapping for the area. For our large scale products the following revision cycles may be informative:

  • For Urban and Suburban areas i.e. all 1:1,000 and some 1:2,500 plans, a one year revision cycle is established.
  • For Periurban areas i.e. all other 1:2,500 plans, a three year cycle is established.
  • For Rural areas i.e. all 1:5,000 plans, a five year revision cycle is established.

However, should you feel that these changes/amendments may affect your title plan; you need to contact the Property Registration Authority at the earliest opportunity.

 

9. I feel that a feature is incorrectly shown on the OSI map; can you tell me why it is represented this way?

Unfortunately Ordnance Survey Ireland does not keep records or surveyors’ notes of site visits.  The map becomes the only record kept.  The OSI are unable to comment on the detail of specific features shown on the mapping or provide reasons why or how a feature is shown on the map.

 

10.  I require an Expert Witness to comment on the mapping, does Ordnance Survey Ireland offer this service?

Ordnance Survey Ireland is unable to become involved in property boundary disputes. If you need an expert to prepare evidence, there are a number of relevant professional organisations including:

The Society of Chartered Surveyors (SCS) www.scs.ie provides a searchable database of Land Surveyors who can act as Expert Witnesses and prepare evidence for court.

The Irish Institution of Surveyors also provides a searchable database of Land Surveyors who offer a similar service.

http://www.irish-surveyors.ie/

 

First Published 31 January 2011