Covering County Londonderry
Our house-to-flat conversions service in County Londonderry covers Derry, Coleraine, Limavady and Magherafelt.
Homes in County Londonderry
Housing in Northern Ireland mixes terraces in Belfast and Derry with detached houses and bungalows in towns and rural areas, many with room to extend.
What is included in a house-to-flat conversion in County Londonderry?
A house-to-flat conversion divides a single house into two or more self-contained flats, each with its own front door, kitchen and bathroom. It always needs planning permission and full building regulations approval, particularly for fire separation and sound insulation between flats.
- Planning and building control applications to the council
- Feasibility check against local planning policy
- Separate electrics, heating and metering
How much should I budget for a house-to-flat conversion?
What house-to-flat conversions typically cost. These are guide ranges; the written quote for your house replaces them.
Priced on survey.
What approvals does a house-to-flat conversion need in Northern Ireland?
In Northern Ireland the council handles both planning and building control. Permitted development rules are set by the Planning (General Permitted Development) Order (Northern Ireland) 2015, and there is no party wall act, so we agree access and protection with neighbours in writing.
This needs full planning permission from the council in Northern Ireland, plus building control approval.
What should I think about before starting?
- Some councils restrict the loss of family houses or limit flat conversions in certain streets.
- Mortgage lenders and freehold arrangements need early legal advice.
What happens after I enquire?
- Tell us about the project. Call, use the guide price tool or send the form with a few photos and a postcode.
- Survey at your house. We look at the existing structure, services and access, and agree what the design needs to achieve.
- Drawings, approvals, written quote. We prepare the design, apply for the approvals it needs, and give you a fixed price in writing.
- We build it. Work follows an agreed programme, with inspections at each stage and a final sign-off.
House-to-flat conversions: common questions
Does converting a house into flats need planning permission?
Yes, always. Subdividing a house into flats is development under planning law.
What are the main building regulations issues?
Fire separation between flats, protected escape routes, sound insulation and separate services.
Do you work in County Londonderry?
Yes. County Londonderry is within our coverage for house-to-flat conversions, along with nearby Derry and Coleraine.
House-to-flat conversions near County Londonderry
- House-to-flat conversions in Derry
- House-to-flat conversions in Coleraine
- House-to-flat conversions in Limavady
- House-to-flat conversions in Magherafelt
Learn more about house-to-flat conversions, or see every project we cover in County Londonderry.

