What is a porch?
A porch is a small extension built around the front door, giving a lobby for coats and shoes and stopping draughts reaching the hall. Most are brick with a pitched tiled roof to match the house, though glazed and timber porches are also common.
How much does a porch cost in County Londonderry?
In County Londonderry, a porch typically costs £5,500–£14,000 from a 3 m² porch to a small front extension, including VAT at 20% (standard rate). The guide for County Londonderry reflects typical costs in Northern Ireland, roughly 14% below the UK-wide figure. Design, structural calculations and council fees are extra.
| Size or type | Guide range |
|---|---|
| From a 3 m² porch to a small front extension | £5,500–£14,000 |
| Higher specification | £14,000–£17,500 |
The main things that change the cost:
- Moving meters, drains or the doorbell and lighting
- Size and roof style
- Whether building regulations apply
- Front door specification
Your exact price depends on the survey and drawings. The guide price tool gives a quick range in the meantime.
Do you need planning permission for a porch in County Londonderry?
Whether you need planning permission depends on your house and its location in Northern Ireland. In Northern Ireland a porch is permitted development if its ground area is no more than 3 square metres, it is no higher than 3 metres (3.5 metres with a pitched roof) and it is at least 2 metres from a boundary with a road.
Northern Ireland has no Party Wall Act. Work on shared walls relies on agreement with the neighbour and common law, so we agree the arrangements in writing before work starts.
If the answer is not clear-cut, we can apply for formal confirmation before you commit to the build.
What we handle
Handled as part of most porches:
- Electrics for lighting
- Front door and windows
- Design to match the house
- Foundations and brickwork
- Roof and guttering
- Plastering and decoration
How long does it take?
The build itself usually takes 2 to 4 weeks on site. Allow time beforehand for drawings and approvals, usually 6 to 12 weeks.
Building in County Londonderry
Northern Ireland has many detached and semi-detached homes on generous plots, which suits single-storey rear extensions and garage conversions.
Towns we cover in County Londonderry include Derry, Coleraine, Limavady and Magherafelt.
How it works
- 01
Visit and measured survey
A free visit to understand the project, check access and take measurements.
- 02
Design and pricing
Design options, then a fixed quote based on the chosen drawings and specification.
- 03
Permissions sorted
Applications, building control and neighbour arrangements, all before the start date.
- 04
Build and handover
Work follows the agreed programme, with inspections along the way and a completion certificate at the end.
Questions about porches in County Londonderry
Can you move the gas or electric meter?
Meters belong to the supplier or network operator. We coordinate their move as part of the job, which can add time.
Who approves a porch in County Londonderry?
Planning matters in County Londonderry go to the council covering your address, and the work needs building control approval. We prepare and submit the applications for you.
Do I need planning permission for a porch in County Londonderry?
In Northern Ireland a porch is permitted development if its ground area is no more than 3 square metres, it is no higher than 3 metres (3.5 metres with a pitched roof) and it is at least 2 metres from a boundary with a road.
Can I have a toilet in my porch?
A downstairs toilet usually needs a larger front extension, a drainage connection and building regulations approval.
How much does a porch cost in County Londonderry?
In County Londonderry, a porch typically costs £5,500–£14,000 from a 3 m² porch to a small front extension, including VAT at 20% (standard rate). Your fixed price depends on the survey and drawings.
How long does it take?
Usually 2 to 4 weeks on site.