Building regulations for extensions across Lisburn
We prepare building regulations for extensions for homes in Lisburn, as a stand-alone service or as the first stage of a design and build project.
- Guide price in LisburnFrom £750 inc VAT
- Approval routeFull plans or building notice to council
- Timescale2–5 weeks for drawings
- Postcode districtsBT10, BT11, BT17, BT27, BT28
Fees in Lisburn
Fees below are our Lisburn guide (×0.86, the Northern Ireland factor), including VAT. Council and building control fees are extra.
| Option | What it covers | Guide price |
|---|---|---|
| Essential | Building regulations drawings for a simple single-storey extension | £750 – £1,550 |
| Standard | Drawings plus structural calculations | £1,100 – £2,250 |
| Premium | Complex or two-storey pack with energy calculations | £1,850 – £3,300 |
Our design fee only. Building control charges are set by your council (or, in England and Wales, a registered building control approver) and quoted separately.Council fees are extra and are set by the Northern Ireland Executive.
For a figure based on your own dimensions, use our guide-price tool.
Working in Lisburn
Postcode districts we cover around Lisburn include BT10, BT11, BT17, BT27, BT28. We also work in nearby Belfast (7 miles), Castlereagh (7 miles), Newtownabbey (11 miles), Antrim (15 miles).
Northern Ireland's housing ranges from city terraces to large numbers of detached houses and bungalows on rural plots, many in render, where single-storey extensions fit easily.
Do I need planning permission in Lisburn?
In Northern Ireland building control is run by the councils under the Building Regulations (Northern Ireland). We submit full plans or a building notice and book the inspections through to completion.
Before any drawing is finalised we check whether the house is listed, in a conservation area or subject to an Article 4 direction.
Building close to a public sewer needs the agreement of NI Water, which we check during design.
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.
Applications are decided by your council, which handles local planning in Northern Ireland.
Included in a typical project
- Structural calculations for beams, lintels and foundations
- Inspection bookings throughout the build
- Completion certificate on sign-off
- Building regulations drawings and written specification
- Energy and glazing checks, including whole-house calculations if needed
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
First, a site visit: we look at the house, garden, access and drains and listen to what you need.
Design and approvals
Drawings are prepared and agreed with you, then submitted for the right planning route and building regulations approval.
Fixed written price
You receive a written, itemised price and programme. Nothing starts until you are happy with it.
Build and sign-off
Work is carried out to the agreed programme, inspected by building control and signed off at the end.
Common questions in Lisburn
Who do I contract with in Lisburn?
Your contract is with S&K Property Investments and Improvement Ltd, which designs and manages the project and the build teams who carry it out.
Will my neighbours in Lisburn be involved?
If a planning application is needed, the council notifies neighbours. Where work is close to a shared boundary, we agree access and protection with them in writing.
Do you cover all of Lisburn?
Yes. We cover Lisburn and the surrounding parts of County Antrim. Site visits are free and there is no obligation.
Full plans or building notice?
A full plans application gets the drawings checked before work starts, which we usually recommend for extensions. A building notice is quicker to submit but carries more risk if something needs changing on site.
Book a free site visit in Lisburn
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.