Is there a legal limit on the height of a wall that you can build between adjacent properties
You have seen all the correct replies above and I note two small but important points.
#1
The 2.0M high section of wall has to drop to 1.2M high where it lies in front of the building.
The front elevation or face of the house defines the front building line and in front of that line you cannot build a wall higher than 1.2M without permission.
You might of course plant a tall hedge or whatever, but not a wall.
#2
The wall will need to be properly sized with supporting piers at regular intervals.
Single brick thickness [4 inches or 102.5mm] can be seen up ot 1.2M, but strictly speaking this exceeds the 1 in 4 rule of thumb for widths to height.
Tall walls need to be in 215mm solid block laid flat. capped and rendered on the side visible from the public road, with piers as appropriate.
You will see them being built in 215mm hollow block, but the lack of mass may expose them to risk of collapse in hight winds.
Oh, and all those unrendered, uncapped block walls you see?
Not compliant.
See Below
ONQ.
[broken link removed]
All advice on AAM is remote from the situation and cannot be relied upon as a defence or support - in and of itself - should legal action be taken.
Competent legal and building professionals should be asked to advise in Real Life with rights to inspect and issue reports on the matters at hand.
=============================================
From: http://www.irishstatutebook.ie/2001/en/si/0600.html
SCHEDULE 2
Article 6
Part 1
Exempted Development — General
Development within the curtilage of a house
Column 1
Description of Development
CLASS 5
The construction, erection or alteration, within or bounding the curtilage of a house, of a gate, gateway, railing or wooden fence or a wall of brick, stone, blocks with decorative finish, other concrete blocks or mass concrete.
Columns 2
Conditions and Limitations
1. The height of any such structure shall not exceed 2 metres or, in the case of a wall or fence within or bounding any garden or other space in front of a house, 1.2 metres.
2. Every wall other than a dry or natural stone wall bounding any garden or other space shall be capped and the face of any wall of concrete or concrete block (other than blocks with decorative finish) which will be visible from any road, path or public area, including public open space, shall be rendered or plastered.
3. No such structure shall be a metal palisade or other security fence.