Dormer loft conversions · Bangor, County Down

Dormer loft conversions in Bangor, County Down

Homeowners in Bangor, County Down can get dormer loft conversions from one company: the design, the paperwork and the building work sit with us rather than with three separate firms.

Covering Bangor, County Down

Our coverage around Bangor, County Down (BT19, BT20) also includes Newtownards, Holywood and Carrickfergus.

Homes in County Down

Northern Ireland has a high proportion of detached houses and bungalows outside the cities, which often suit side extensions, rear extensions and upward extensions.

What is a dormer loft conversion?

A dormer loft conversion builds a box-shaped extension out from the rear slope of the roof, creating vertical walls and full head height across most of the new floor. It is the most popular type of loft conversion because it gives the most usable space for the cost.

  • Steelwork and new floor structure
  • Dormer frame, roof covering and cladding
  • En-suite, electrics and fire-protected escape route

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

Typical ranges for dormer loft conversions. Ground conditions, access and specification move the final figure, which we fix in writing before work starts.

Dormer loft conversionsGuide price incl. VAT
Rear dormer, bedroom only£50,000 to £65,000
Full-width dormer with en-suite£60,000 to £80,000
L-shaped dormer (over rear outrigger)£65,000 to £90,000

Planning and building rules in Bangor, County Down

Projects in Northern Ireland need planning clearance from one of the eleven councils and building control approval, also from the council. The Party Wall etc. Act does not extend to Northern Ireland, so work near neighbours is agreed directly and documented carefully.

In Northern Ireland, roof enlargements such as dormers often need planning permission depending on size and position. Building control approval is needed for every loft conversion.

What can affect a dormer loft conversion?

  • A flat dormer roof needs proper falls and a quality membrane.
  • L-shaped dormers are common on Victorian terraces with a rear outrigger.

What happens after I enquire?

  1. Start with a conversation. A short call or the online form is enough for us to understand what you want to build.
  2. Free site visit. We measure up, look at access, drains and the structure, and talk through options and budget.
  3. Price and paperwork. The design is priced line by line, and we submit the planning and building control applications.
  4. Construction and completion. One site lead co-ordinates every trade through to the building control certificate.

Your questions answered

How much does a dormer loft conversion cost?

Typically £50,000 to £80,000 including VAT, and up to around £90,000 for an L-shaped dormer.

Can a dormer include a bathroom?

Yes. The full head height in a dormer makes it the best place for a shower room or en-suite.

Do you work in Bangor, County Down?

Yes. Bangor, County Down is within our coverage for dormer loft conversions, along with nearby Newtownards and Holywood.

Dormer loft conversions in nearby towns

Learn more about dormer loft conversions, or see every project we cover in Bangor.

Planning an extension, loft or new home?

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