Omagh house extensions
From a small utility to a two-storey addition, we take on house extensions throughout Omagh, starting with a free visit and a planning check.
- Postcode districtsBT78
- Price regionNorthern Ireland (×0.86)
- Planning rulesNorthern Ireland
- Site visitFree, no obligation
What extensions cost in Omagh
We publish guide prices so you can budget before anyone visits. For Omagh they are adjusted by ×0.86, the factor we use across Northern Ireland.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Extensions over a garage | 12 m² | £21,500 – £28,000 |
| Conservatory replacement extensions | 14 m² | £25,500 – £33,500 |
| Kitchen extensions | 20 m² | £36,000 – £46,000 |
| Orangery extensions | 16 m² | £38,500 – £48,500 |
| Single-storey rear extensions | 20 m² | £35,000 – £45,000 |
Planning rules in Omagh
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.
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.
Covering Omagh and nearby
We cover Omagh and the postcode districts BT78. Nearby, we also take on projects in Strabane (16 miles), Cookstown (22 miles). Just over the County Fermanagh border, Enniskillen is about 23 miles away.
Which extension suits a Omagh home?
In Northern Ireland, extension projects follow the NI planning rules and council building control, which we account for from the first survey.
For many houses here, single-storey rear extensions, annexe extensions or side extensions gives the most useful space for the budget.
All extension types we build in Omagh
- Wraparound extensions · from £30,500
- Timber frame extensions · from £18,000
- Building regulations for extensions · from £750
- Glass box extensions · from £25,500
- Utility and boot room extensions · from £12,000
- Annexe extensions · from £47,000
- Side return extensions · from £15,000
- Porch extensions · from £3,400
- Bungalow extensions · from £22,500
- Extensions over a garage · from £20,500
- Kitchen extensions · from £23,000
- Orangery extensions · from £25,500
- Flat roof extensions · from £18,000
- Single-storey rear extensions · from £18,000
- Side extensions · from £18,500
- Pitched roof extensions · from £19,000
- Double-storey extensions · from £32,500
- Home office extensions · from £13,500
- Extension plans and drawings · from £1,000
- Conservatory replacement extensions · from £17,000
- Planning permission for extensions · from £300
- Bedroom extensions · from £22,000
Free site visit
A designer visits, takes measurements and photos, and discusses layouts, budget and timing with you.
Design and approvals
Once the layout is agreed, we deal with the council: planning permission or written confirmation that none is needed, plus building control.
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 Omagh
How much does an extension cost in Omagh?
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.
Do you handle building regulations?
Yes. We prepare the drawings and calculations, submit them and book inspections, ending with a completion certificate.
How long does an extension take in Omagh?
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.
Do I need planning permission for an extension in Omagh?
Not always. It depends on the size, position and your property's history. In Northern Ireland some single-storey rear extensions are permitted development; larger ones need planning permission.
Book a free site visit in Omagh
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.