Loft Conversions in Luton

Dormer, hip-to-gable and rooflight loft conversions across Luton and Dunstable. Staircase, insulation, fire protection and building control sign-off included, and an en-suite where the head height allows it.

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The loft is usually the cheapest square metre in the house.

You already own the space, it already has a roof over it and it already sits on foundations that were sized for the whole house. That is why a loft conversion generally costs less per square metre than an extension, and why it is the first thing worth pricing when a family in a Luton semi runs out of bedrooms. The published UK cost ranges, and the places where the reputable sources flatly disagree with each other, are set out on our loft conversion cost guide for Luton.

What decides whether it works is head height, the position the staircase can physically land in, and the roof structure you have got. A traditional cut roof with purlins is straightforward to open up. A modern trussed roof is not, because those trusses are doing structural work and cutting them without replacing what they provide is exactly the sort of thing that makes a house unsafe. We survey before we quote, every time.

Fire is the thing homeowners underestimate most. A loft conversion turns a two storey house into a three storey house in the eyes of the Building Regulations, and that brings a protected escape route, fire doors and interlinked alarms with it. That is not us being awkward. It is what gets you a completion certificate, and it is the first thing a buyer's solicitor asks for.

What is involved in converting a loft

Survey and feasibility

Head height measured, roof structure identified, staircase landing position worked out and drainage checked. If the answer is that your loft is not worth converting, you get that answer free rather than a quote.

Structural design

New floor joists sized to carry a habitable floor loading, the dormer or gable structure designed, and steels where the existing structure needs supporting. Engineer's calculations supplied.

Dormer, gable or rooflight

Built and made watertight, with the roof covering matched to the existing house. Most of the noisy, weather-dependent work happens in this stage.

Staircase and fire protection

A new staircase designed into the plan rather than squeezed in afterwards, plus the protected escape route, fire doors and interlinked alarms the Regulations require for a third storey.

Insulation, first fix and plaster

Insulation to current standards, electrics and plumbing first fixed, then boarded, plastered and left ready to decorate.

En-suite and finish

Where head height and drainage allow, an en-suite shower room tiled and fitted, then decoration and a snagging list worked through with you.

Loft conversion questions we get asked in Luton

What are the four types of loft conversion?

Rooflight or Velux, where nothing structural changes to the roof shape and windows go into the existing slope. Dormer, where a box is built out of the roof to create full head height and floor area. Hip-to-gable, where a sloping hip end is rebuilt vertically as a gable wall, which suits a lot of Luton semis and end terraces. And mansard, where most of the roof is rebuilt at a steep angle, giving the most space and needing the most work.

What is the cheapest way to convert a loft?

A rooflight conversion, because you are not altering the shape of the roof, you are not building new external structure and you usually stay inside permitted development. The trade-off is that you only get full head height in the middle of the room, so the floor area you can stand up in is smaller than the floor area you are paying to build.

How much head height do I need for a loft conversion?

The usual rule of thumb is around 2.2 to 2.4 metres from the top of the existing ceiling joists to the underside of the ridge, measured before any new floor goes in, because the new floor structure eats into it. That is a rule of thumb rather than a regulation, and the real answer depends on your roof type and where the staircase can land. We measure it properly at the survey and tell you either way.

Do I need planning permission for a loft conversion?

Many loft conversions in England are permitted development, subject to the volume allowance, no extension beyond the roof plane on the principal elevation, materials matching the existing house, and side-facing windows being obscure glazed and non opening below 1.7 metres. Conservation areas and properties whose permitted development rights have been removed are different. We check yours against the actual rules before you commit to drawings.

Will a loft conversion need building regulations approval?

Yes, always, whether or not it needs planning permission. Building control will want to see the floor structure, the escape route, the fire doors, the insulation and the staircase. We handle the applications and the inspections, and you end up with a completion certificate, which is the document that matters when you sell.

Can I put an en-suite in a loft conversion?

Usually, if the head height allows it in the position the drainage can reach. The constraint is rarely the plumbing itself, it is finding somewhere with enough standing height that does not eat the bedroom. We work the en-suite into the layout at design stage rather than trying to find room for it later.