What is a hip-to-gable loft conversion?

A hip-to-gable loft conversion replaces the sloping side (the hip) of a semi-detached or detached roof with a vertical gable wall. This extends the ridge and creates enough space for a staircase and a full-size room, usually combined with a rear dormer.
How much does a hip-to-gable loft conversion cost in Omagh?
In Omagh, a hip-to-gable loft conversion typically costs £47,500–£67,000 for a hip-to-gable with rear dormer, including VAT at 20% (standard rate). Building costs in Northern Ireland run about 14% below the UK average, and the figures for Omagh are adjusted to reflect that. Design, structural calculations and council fees are extra.
| Size or type | Guide range |
|---|---|
| A hip-to-gable with rear dormer | £47,500–£67,000 |
| Higher specification | £67,000–£84,000 |
What moves the price most:
- Size of the rear dormer
- Gable wall construction and finish
- Bathroom and plumbing
- Staircase design
A guide range is only a starting point: the guide price tool gives an instant figure for your size, and a free survey turns it into a fixed quote.
Do you need planning permission for a hip-to-gable loft conversion in Omagh?
Here is how the rules work for a hip-to-gable loft conversion in Northern Ireland. In Northern Ireland roof enlargements must be set back from the verges to be permitted development, so a hip-to-gable conversion usually needs planning permission.
Northern Ireland has no Party Wall Act. Work on shared walls relies on agreement with the neighbour and common law, so we agree the arrangements in writing before work starts.
We check this for your address before design work starts, so there are no surprises later.
What we handle
Handled as part of most hip-to-gable loft conversions:
- Survey and planning check
- Roof extension and rear dormer
- Building control sign-off
- Insulation, electrics, plumbing and plastering
- Drawings and structural calculations
- Gable wall built in brick or block and finished to match
How long does it take?
Build time is typically 7 to 10 weeks on site. Allow time beforehand for drawings and approvals, usually 6 to 12 weeks.
Building in Omagh
Across Northern Ireland, bungalows and chalet bungalows are common, so loft conversions and rear extensions are popular projects.
Omagh sits in County Tyrone. We cover the whole of Omagh, including postcodes BT78 and BT79.
How it works
- 01
Visit and measured survey
A free visit to understand the project, check access and take measurements.
- 02
Drawings and written quote
We prepare the design and give you a written, itemised quote with inclusions and exclusions.
- 03
Approvals in place
We handle planning, building control and neighbour notices before work starts.
- 04
Build and sign-off
We run the build to a written programme and hand over the completion certificate.
Questions about hip-to-gable loft conversions in Omagh
Do I need planning permission for a hip-to-gable loft conversion in Omagh?
In Northern Ireland roof enlargements must be set back from the verges to be permitted development, so a hip-to-gable conversion usually needs planning permission.
How long does it take?
Typically 7 to 10 weeks on site.
Can the gable be brick?
Yes. We match the existing finish, whether brick, render or pebbledash.
Do you build hip-to-gable loft conversions in Omagh?
Yes. We build hip-to-gable loft conversions across Omagh, including postcodes BT78 and BT79. Every project starts with a free home visit.
Will it look strange next to my neighbour?
On a pair of semis the roofs will no longer match unless your neighbour does the same. Many streets already have several converted roofs.
How much does a hip-to-gable loft conversion cost in Omagh?
In Omagh, a hip-to-gable loft conversion typically costs £47,500–£67,000 for a hip-to-gable with rear dormer, including VAT at 20% (standard rate). Your fixed price depends on the survey and drawings.
