Building an extension: "right to light" - does it exist?

Niall, a few things:

1) Colls v Home was in England, where a right to light does exist since 1832 (as noted)
2) The extension is blocking some light, naturally, but not an unreasonable amount (imho)
3) An extension of similar dimension is in place 4 doors down; the people who built it did the same as we did, just told the people next door that they were - the people next door didn't spit the dummy out tho
4) The owner of the house doesn't live there, it's rented. He lives in another town, so is unable to enjoy this house anyway!

Thoughts?

Rock,

1) It forms part of Irish Law - 1904. Most of our laws have been inherited.
2) This would need to be established. As an Architect, I have dealt with this issue before. It requires surveys, drawings, and professional opinions based upon established practices and methods.
3) Yes, basicaly they have given up the easement (right to light) or it doesn't effect them, infringe upon the easement.
4) again no relevance, an easement is real property, and part of the house. If you rented your house, and someone decided that that meant they could build on your garden, because you weren't actually living there, and couldn't enjoy it, would it make sense?
On the plus side, as you are in posession, the burden is on your neighbours to prove that you have infringed upon their right to light.

Are they looking for an Architect?

Regards,

Niall