County Armagh
Building Regulations for rear extensions in County Armagh
Construction drawings, structural calculations and building control through to the completion certificate. Rear extensions in County Armagh: we cover 3 towns including Craigavon, Portadown and Armagh, with design, approvals and the build under one contract.

County Armagh has terraces near the centre, semis on the edges and many detached houses and bungalows in the surrounding countryside, where plots are often generous.
What does it cost in County Armagh?
As a guide, £2,500–£5,500 including VAT. These are guide ranges; the written quote after the survey is the figure that counts.
What approvals does it need in County Armagh?
In Northern Ireland building control is run by the councils. A rear extension needs approval (full plans or building notice) and is built to the Northern Ireland Technical Booklets.
Insulation and glazing follow Technical Booklet F1 in Northern Ireland, checked by council building control.
Conservation areas, Areas of Outstanding Natural Beauty and listed buildings restrict permitted development in Northern Ireland.
Where in County Armagh do we work?
FAQ
Questions people ask
What is a completion certificate?
The document confirming the work meets the regulations. Keep it; buyers' solicitors ask for it.
Do I need regs if I don't need planning?
Yes.
What stages are inspected?
Typically foundations, damp proofing, drainage, steelwork, insulation and completion.
Do you cover all of County Armagh?
We cover 3 towns and districts in County Armagh, including Craigavon, Portadown and Armagh.
Who builds the extension?
Vetted building teams working under contract to us; your contract is with S&K Property Investments and Improvement Ltd.