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Structural

Loft Conversions

Loft conversions that add real, usable headroom and living space — not just a staircase to a space you still have to duck through.

Getting the headroom right, not just the staircase

The single biggest factor in whether a loft conversion actually feels like a proper room is headroom — and that's determined by roof pitch, ridge height and how the dormer or roof-light structure is designed, decided long before anyone talks about paint colours. We get this right at the design stage so you're not left with a room you can only stand up in down the middle.

Most period properties in Hampstead and Highgate can accommodate a dormer or hip-to-gable conversion, but roof pitch and existing structure vary enough street to street that we always survey before quoting a specific approach.

What's included

  • Dormer and hip-to-gable loft conversions
  • Velux/roof-light conversions where dormers aren't suitable
  • New staircase design and structural floor strengthening
  • En-suite bathroom addition within the loft space
  • Full insulation and building-regs compliant fire safety

Planning permission for loft conversions

Many loft conversions fall under Permitted Development, but dormers on the front roof slope, conservation area properties, and anything increasing the roof height typically need full planning permission. We'll tell you honestly which category your project falls into before you commit to anything.

Types of loft conversion we specialise in

  • Rear box dormers — the most common type, a box built onto the back of the roof to create a large amount of usable space.
  • Pocket dormers and mansards — smaller dormers that add usable space, and can sit within a mansard roof.
  • L-shaped dormers — ideal for terraced or semi-detached houses with rear additions, allowing more than one extra room.
  • Side dormers — beneficial for houses with a pitched roof to the side, adding substantial loft space.
  • Piggy back dormers — raising a section of the rear roof to create standing room in an otherwise unusable loft.
  • Dormer extensions — adding both floor area and headroom where the existing roof height is limited.
01

Site Visit & Quote

Free, no-obligation assessment and a fixed written quote.

02

Plan the Work

Materials, timeline and any permissions confirmed before we start.

03

Carry Out the Job

One site manager, our own trades, start to finish.

04

Handover

Final walkthrough and snagging before we call it done.

Our loft conversion work

Loft conversion work photographed during construction, from steel supports and timber framing to roof coverings and insulation.

Overhead view of steel supports and timber floor joists during loft construction
Timber floor joists fitted with metal brackets during a loft conversion
Steel loft structure with timber joists and workers fitting the framing
Wide view of steel beams and timber framing in a loft conversion under construction
New timber stud walls and ceiling framing inside a loft conversion
Sloping roof rafters and steel support during loft construction
Interior view of sloping timber roof framing and temporary scaffolding
Yellow roof battens installed over roofing underlay
Roof tiles being fitted over yellow battens during loft conversion works
Dark roof tiling in progress beneath scaffolding and protective sheeting
Sloped tiled roof beneath protective construction scaffolding
Loft wall insulation panels and timber window openings during construction

Common questions

Do I need planning permission for a loft conversion?

Often not, if it falls under Permitted Development — but conservation area properties and front-facing dormers usually do need full permission. We'll confirm which applies to your property at the site visit.

How much headroom do I actually need?

Building regulations require a minimum head height over the staircase, but for the room to feel genuinely usable we typically aim for at least 2.2m over as much of the floor area as the roof structure allows.

How long does a loft conversion take?

A typical dormer loft conversion runs 6–10 weeks once work starts, depending on structural complexity and whether an en-suite is included.

Thinking about converting the loft? Let's see what's possible.