House extensions in Newtownards
We design and build house extensions for homes in Newtownards and the surrounding County Down area, with guide prices adjusted for the region.
- Postcode districtsBT23
- Price regionNorthern Ireland (×0.86)
- Planning rulesNorthern Ireland
- Site visitFree, no obligation
Areas we cover around Newtownards
Postcode districts we cover around Newtownards include BT23. Neighbouring towns we cover include Bangor, County Down (5 miles), Downpatrick (18 miles), Banbridge (29 miles), Newry (39 miles). For homes towards County Antrim, Castlereagh is around 8 miles away.
Popular extension prices in Newtownards
Use these Newtownards guide prices to sense-check a budget; the guide-price tool narrows them to your own size, and the site visit turns them into a written figure.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Double-storey extensions | 32 m² | £49,500 – £65,000 |
| Single-storey rear extensions | 20 m² | £35,000 – £45,000 |
| Conservatory replacement extensions | 14 m² | £25,500 – £33,500 |
| Extensions over a garage | 12 m² | £21,500 – £28,000 |
| Side return extensions | 11 m² | £22,500 – £28,500 |
| Orangery extensions | 16 m² | £38,500 – £48,500 |
What works best for Newtownards houses?
In Northern Ireland, extension projects follow the NI planning rules and council building control, which we account for from the first survey.
The types we would usually look at first for a home in Newtownards are bungalow extensions, side extensions and annexe extensions, depending on the garden and how the house is laid out.
Do extensions in Newtownards need planning permission?
In Northern Ireland the Planning (General Permitted Development) Order 2015 lets some single-storey rear extensions go ahead without planning permission, up to 3 m on a semi-detached or terraced house and 4 m on a detached house, within height and boundary limits. Larger, side and two-storey extensions normally need planning permission from the council, and building control approval is separate.
In a conservation area or area of townscape character the permitted development rights are more limited, listed homes need listed building consent, and if rights have been removed by a condition, any extension needs an application.
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.
Applications are decided by your council, which handles local planning in Northern Ireland.
All extension types we build in Newtownards
- Single-storey rear extensions · from £18,000
- Orangery extensions · from £25,500
- Porch extensions · from £3,400
- Bungalow extensions · from £22,500
- Building regulations for extensions · from £750
- Annexe extensions · from £47,000
- Kitchen extensions · from £23,000
- Planning permission for extensions · from £300
- Side return extensions · from £15,000
- Timber frame extensions · from £18,000
- Wraparound extensions · from £30,500
- Utility and boot room extensions · from £12,000
- Extension plans and drawings · from £1,000
- Extensions over a garage · from £20,500
- Double-storey extensions · from £32,500
- Bedroom extensions · from £22,000
- Pitched roof extensions · from £19,000
- Glass box extensions · from £25,500
- Side extensions · from £18,500
- Conservatory replacement extensions · from £17,000
- Flat roof extensions · from £18,000
- Home office extensions · from £13,500
Free site visit
We visit your Newtownards home, measure up, talk through what you want and check the planning position.
Design and approvals
We draw the design, agree it with you and handle planning or permitted development checks and building regulations.
Fixed written price
With the design and specification agreed, you get a fixed written price and a start date.
Build and sign-off
Work is carried out to the agreed programme, inspected by building control and signed off at the end.
Questions about extensions in Newtownards
How much does an extension cost in Newtownards?
Using our Northern Ireland factor (×0.86), a standard-spec single-storey extension of 20 m² is a guide £35,000 to £45,000 including VAT, and a 32 m² two-storey extension £49,500 to £65,000. Your written price follows the survey.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Newtownards, and the guide-price tool gives a range for your own size and finish in about a minute.
How long does an extension take in Newtownards?
Usually 2 to 4 months of design and approvals, then 10 to 16 weeks on site for a single-storey extension or 16 to 24 weeks for two storeys.
Will my neighbours need to be told?
If you apply for planning permission the council notifies neighbours, and we agree access with them in writing for work near a shared boundary.
Who do I contract with?
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.
Book a free site visit in Newtownards
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.