An HMO loft conversion adds one or two letting rooms, often with an ensuite, in the roof space. Landlords in Derry (BT47 and BT48) usually come to us with a council letter, a fire risk assessment or a house they have just bought. We price from whichever you have. Derry has a university population, so many shared houses are let to students on yearly tenancies, and summer is the main window for works.
- Area
- County Londonderry, Northern Ireland
- Postcodes
- BT47 and BT48
- Pricing region
- Northern Ireland
What do loft conversions for extra rooms in Derry involve?
- Ensuite where space allows
- Building control sign-off
- Planning or permitted development check
- Fire doors and extended alarm system
- New stair within the protected route
Which rules apply in Derry?
Loft conversions for extra rooms in Derry must satisfy national law for Northern Ireland, the NI HMO standards and licence conditions and, where walls, drainage or fire separation change, the building rules. In short:
- All new HMOs need planning permission; councils such as Belfast apply HMO policy areas and limits on concentration.
- New HMOs need building control approval as well as planning permission.
- Doors on protected routes are typically FD30 or FD30S, self-closing on three hinges; emergency lighting is required in HMOs of 4 or more storeys.
- Space and amenity standards come from the HMO (Living Accommodation Standard) Regulations (NI) 2019 and the licence conditions.
How much do loft conversions for extra rooms cost in Derry?
| Item | UK typical | Local guide | Per |
|---|---|---|---|
| Dormer loft conversion, about 30 m² | £40,000 – £60,000 | £36,000 – £54,000 | project |
| Rooflight loft conversion, about 30 m² | £22,500 – £30,000 | £20,250 – £27,000 | project |
These are typical ranges including VAT, adjusted for Northern Ireland, where costs run below the UK average. The fixed price for a house in Derry follows a site visit.
How long does it take?
Typical time on site: 6–10 weeks. We agree the programme with you before starting and send photo updates as the work progresses.
If the house is let to students, we work backwards from the next tenancy start date in Derry.
When do Derry landlords need it?
We usually get the call when:
- Moving to a larger HMO with the right consents
- A house with usable roof space
Questions about loft conversions for extra rooms in Derry
How much head height do I need?
As a rule of thumb, about 2.2 metres at the highest point of the existing roof space before any work. Less can work with a dormer or lowered ceilings.
How far do you travel from Derry?
We cover the whole of County Londonderry and work UK-wide. For Derry the nearest towns on our list are Londonderry County Borough (0 miles), Strabane (14 miles), Coleraine (27 miles).
Where do I check the HMO rules for an address in Derry?
With the local council for the address. In Northern Ireland, licensing is run centrally by the NI HMO Unit, and all new HMOs need planning permission and building control approval from the local council.
How much do loft conversions for extra rooms cost in Derry?
Our guide ranges for Northern Ireland are in the table on this page, and the guide-price tool gives a figure for your house. A fixed written quote follows a free site visit.
Loft conversions for extra rooms near Derry
- Londonderry County Borough · 0 mi
- Strabane · 14 mi
- Coleraine · 27 mi
- Omagh · 28 mi
- Ballymena · 42 mi
- Enniskillen · 47 mi
- All of County Londonderry
Other HMO services in Derry
- Extensions for extra rooms in Derry
- Large HMO conversions (7+ sharers) in Derry
- Escape routes, emergency lighting and fire stopping in Derry
- Ensuite installation in Derry
- Layout changes and room reconfiguration in Derry
- Fire alarm and detection systems in Derry
- EPC and energy upgrades in Derry
- Void and between-tenancy refurbs in Derry