Loft conversions in County Down

Covering County Down

Our coverage across County Down includes Bangor, Newtownards, Newry and Banbridge.

Homes in County Down

Across Northern Ireland you find city terraces, suburban semis and rural bungalows and farmhouses, so the right approach depends on the plot and the planning history.

What is a loft conversion?

A loft conversion turns an unused roof space into habitable rooms, usually a bedroom with an en-suite, by strengthening the floor, adding a staircase, insulating the roof and putting in windows. The type you need depends on the roof: rooflight, dormer, hip-to-gable or mansard.

Design drawings and structural calculations
New floor joists, steels and staircase
Dormer or rooflights, insulation and plasterboard

What is the guide price for a loft conversion in County Down?

Guide prices for loft conversions, including VAT where it applies. Your fixed price is confirmed in writing after the survey.

Loft conversions	Guide price incl. VAT
Rooflight conversion	£30,000 to £45,000
Dormer conversion	£50,000 to £90,000
Hip-to-gable with dormer	£60,000 to £95,000
Mansard conversion	£65,000 to £110,000

Planning and building rules in County Down

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.

In Northern Ireland, roof enlargements such as dormers often need planning permission depending on size and position.

What can affect a loft conversion?

Head height under the ridge decides whether a conversion is practical.
The new staircase usually takes space from the landing or a bedroom below.

What are the steps?

Tell us about the project. Call, use the guide price tool or send the form with a few photos and a postcode.
Free site visit. We measure up, look at access, drains and the structure, and talk through options and budget.
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.

Questions about a loft conversion in County Down

How much does a loft conversion cost?

Roughly £30,000 to £45,000 for a rooflight conversion, £50,000 to £90,000 for a dormer, £60,000 to £95,000 for a hip-to-gable and £65,000 to £110,000 for a mansard, including VAT.

How long does a loft conversion take?

Usually 6 to 14 weeks on site depending on the type.

How do I get a price for loft conversions in County Down?

Use the guide price tool for a ballpark figure, then book a visit for a fixed written price for the agreed specification.

Other towns nearby

Learn more about loft conversions, or see every project we cover in County Down.