What is a house renovation?
A house renovation brings an older or tired home up to date. It can include rewiring, a new heating system, replastering, new floors, windows, kitchens and bathrooms, and changes to the layout. A full renovation is often combined with an extension or loft conversion.
How much does a house renovation cost in County Londonderry?
In County Londonderry, a house renovation typically costs £750–£1,550 per m² for a medium to full renovation, including VAT at 20% (5% may apply to homes empty for two years or more). For a typical 90 m² project that is roughly £67,500–£139,500. Building costs in Northern Ireland run about 14% below the UK average, and the figures for County Londonderry are adjusted to reflect that. Design, structural calculations and council fees are extra.
| Size or type | Guide range |
|---|---|
| Smaller project (63 m²) | £47,000–£97,500 |
| Typical project (90 m²) | £67,500–£139,500 |
| Larger project (126 m²) | £94,500–£195,500 |
| Rate per m² | £750–£1,550 |
What moves the price most:
- Finishes
- Structural and damp repairs
- Extent of rewiring and replumbing
- Windows and doors
Use the guide price tool to see how size and specification change the figure, then ask for a written, itemised quote.
Do you need planning permission for a house renovation in County Londonderry?
Before anything is built in County Londonderry, we confirm which approvals apply in Northern Ireland. In Northern Ireland structural and notifiable renovation work needs building control approval; listed homes need listed building consent.
In Northern Ireland building control approval comes from the council, usually through a full plans application or a building notice, with inspections during the work and a completion certificate at the end.
Our first visit includes a check of your planning history, so you know the route before paying for drawings.
What we handle
Handled as part of most house renovations:
- Kitchens and bathrooms
- Joinery, doors and floors
- Building control for notifiable work
- Condition survey and scope of works
- Structural repairs and damp treatment
- Decoration
How long does it take?
The build itself usually takes 8 to 20 weeks on site depending on scope. Allow time beforehand for drawings and approvals, usually 6 to 12 weeks.
Building in County Londonderry
Northern Ireland has many detached and semi-detached homes on generous plots, which suits single-storey rear extensions and garage conversions.
Towns we cover in County Londonderry include Derry, Coleraine, Limavady and Magherafelt.
How it works
- 01
Survey and brief
We visit, discuss your ideas and budget, and survey the property or site at no cost.
- 02
Drawings and written quote
We prepare the design and give you a written, itemised quote with inclusions and exclusions.
- 03
Approvals
Planning or permitted development confirmation, building regulations and any party wall matters.
- 04
Construction and completion
We build, put right any snags and hand over the building control certificate.
Questions about house renovations in County Londonderry
Do I need planning permission for a house renovation in County Londonderry?
In Northern Ireland structural and notifiable renovation work needs building control approval; listed homes need listed building consent.
Does a renovation need building regulations approval?
Some parts do, such as rewiring, structural changes, new windows and heating systems. We handle notifications.
Do you build house renovations in County Londonderry?
Yes. We build house renovations across County Londonderry, including postcodes BT28, BT45, BT46, BT47 and BT48. Every project starts with a free home visit.
How long does a full renovation take?
Typically 8 to 20 weeks on site depending on the size of the house and scope.
How much does a house renovation cost in County Londonderry?
In County Londonderry, a house renovation typically costs £750–£1,550 per m² for a medium to full renovation, including VAT at 20% (5% may apply to homes empty for two years or more). A typical 90 m² project comes to roughly £67,500–£139,500. Your fixed price depends on the survey and drawings.
Can I live in the house during a renovation?
For light work, yes. For a full renovation, most clients move out for some or all of the job.