Planning permission for extensions across Derry/Londonderry
Need planning permission for extensions in Derry/Londonderry? We survey the house, prepare what the council needs and deal with the officers until a decision is made.
- Guide price in Derry/LondonderryFrom £300 inc VAT
- PlanningWe find the right route for you
- Timescale8–13 weeks typical decision period
- Postcode districtsBT48
Working in Derry/Londonderry
Across BT48, we can visit, measure and advise. Neighbouring towns we cover include Limavady (15 miles), Coleraine (27 miles), Magherafelt (31 miles).
For homes towards County Tyrone, Strabane is around 13 miles away. In Northern Ireland, extension projects follow the NI planning rules and council building control, which we account for from the first survey.
Will the council need to approve it?
In Northern Ireland we check the permitted development limits for your house type and, where needed, apply to your council for planning permission, then submit full plans or a building notice to council building control.
Before any drawing is finalised we check whether the house is listed, in a conservation area or subject to an Article 4 direction.
Northern Ireland has no Party Wall Act. Where work is on or close to a shared boundary, we agree access and protection with your neighbour in writing before work starts.
Building close to a public sewer needs the agreement of NI Water, which we check during design.
Applications are decided by your council, which handles local planning in Northern Ireland.
Fees in Derry/Londonderry
Guide fees for Derry/Londonderry including VAT, using our Northern Ireland factor of ×0.86. Council and building control charges are not included.
| Option | What it covers | Guide price |
|---|---|---|
| Essential | Permitted development confirmed in writing (certificate or notification) | £300 – £600 |
| Standard | Householder planning application handled | £500 – £950 |
| Premium | Application with heritage or design statements, and responses to the council | £750 – £1,400 |
Our handling fee only. Council fees are extra and are set by the Northern Ireland Executive. Drawings are priced separately.
Try the guide-price tool to see a range for your own size and finish.
What is included
- Planning history and constraints check for your address
- Advice if conditions are attached or changes are requested
- Route recommendation in writing
- Liaison with the planning officer
How the project works
Site visits are free and there is no obligation. Where drawings are needed, the design stage is priced in writing before it starts.
Free site visit
A designer visits, takes measurements and photos, and discusses layouts, budget and timing with you.
Design and approvals
We produce the drawings and structural design, and manage the approvals so they are in place before work starts.
Fixed written price
With the design and specification agreed, you get a fixed written price and a start date.
Build and sign-off
The build is managed from start to finish, inspected at each stage and signed off on completion.
Common questions in Derry/Londonderry
How long does this take for a Derry/Londonderry home?
8–13 weeks typical decision period, depending on the council and the complexity of the project.
Do you cover all of Derry/Londonderry?
Yes. We cover Derry/Londonderry and the surrounding parts of County Londonderry. Site visits are free and there is no obligation.
Do I need building regulations approval in Derry/Londonderry?
Yes. Almost every extension needs it, whatever the planning route. We prepare the drawings and book the inspections.
What happens if planning is refused?
You can revise the design and reapply, or appeal. We read the officer’s report and tell you honestly which option has a better chance.
Book a free site visit in Derry/Londonderry
We will measure up, check the planning position and give you honest guide figures.
- Free, no-obligation site visit
- Planning route checked before you spend on drawings
- Written price once the design is agreed
- Building control sign-off at the end
Prefer to talk? Call 0800 088 6341 or .
Book a free site visit
Tell us a little about the project and we will arrange a time.