What is a planning or building regulations application?

Planning permission decides whether a project can be built; building regulations decide how it must be built. Most extensions, lofts and conversions need building regulations approval even when planning permission is not required.
How much does a planning or building regulations application cost in County Down?
In County Down, a planning or building regulations application typically costs £750–£2,250 for application management (council fees extra), including VAT at 20% (standard rate; planning application fees carry no VAT, council building control fees include VAT). Building costs in Northern Ireland run about 14% below the UK average, and the figures for County Down are adjusted to reflect that. Council application fees are extra.
| Size or type | Guide range |
|---|---|
| Application management (council fees extra) | £750–£2,250 |
| Larger or more complex projects | £2,250–£2,750 |
What moves the price most:
- Planning conditions
- Building control route
- Type of application
- Revisions requested by the council
Use the guide price tool to see how size and specification change the figure, then ask for a written, itemised quote.
Planning and building regulations in County Down
Here is how the rules work for a planning or building regulations application in Northern Ireland. In Northern Ireland planning applications go to one of the 11 councils, which also provide building control.
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.
Our first visit includes a check of your planning history, so you know the route before paying for drawings.
What we handle
The work we manage on a planning or building regulations application:
- Certificate of lawfulness applications
- Discharge of planning conditions
- Permitted development assessment
- Written agreement with neighbours on shared walls
- Building control application and inspections
- Planning or householder applications
How long does it take?
Allow about 8 weeks for a householder planning decision (two months in Scotland). If the drawings are for a planning application, add the council’s decision period once they are submitted.
Building in County Down
Across Northern Ireland, bungalows and chalet bungalows are common, so loft conversions and rear extensions are popular projects.
Towns we cover in County Down include Bangor, Newtownards, Newry, Banbridge and Downpatrick.
How it works
- 01
Survey and brief
We visit, talk through what you want and record the existing building.
- 02
Design options
Sketch layouts to agree the approach before detailed drawing starts.
- 03
Drawings and documents
The drawings and forms the council and building control need.
- 04
Approval
We follow the application through to a decision and pass on the approved drawings.
Questions about planning and building regulations applications in County Down
How long does a planning decision take?
Councils aim to decide most householder applications within 8 weeks.
Do you handle planning and building regulations applications in County Down?
Yes. We handle planning and building regulations applications across County Down, including postcodes BT18, BT19, BT22, BT24 and BT25. Every project starts with a free home visit.
What happens if I build without approval?
The council can take enforcement action, and missing approvals cause problems when selling. It is always better to get approvals first.
What is a certificate of lawfulness?
A certificate from the council confirming that a project is permitted development. It is optional but useful when selling the house.
What about shared walls in County Down?
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.
How much does a planning or building regulations application cost in County Down?
In County Down, a planning or building regulations application typically costs £750–£2,250 for application management (council fees extra), including VAT at 20% (standard rate; planning application fees carry no VAT, council building control fees include VAT). Your fixed price depends on the survey and drawings.
