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Loft conversion & bedroom suite - residential design and build services

CASE STUDY · Crouch End, North London (N8)

Loft conversion & bedroom suite

A rear dormer loft conversion creating a principal bedroom, en-suite and built-in eaves storage, with a new staircase designed to sit within the existing landing.

01. OVERVIEW & BRIEF

Client brief

The family needed a quiet principal bedroom and en-suite bathroom on a new second floor, with generous built-in storage in the front eaves and a staircase that looked and felt like part of the original Edwardian house.

02. PROPERTY CHALLENGE

Property challenge

Head height at the existing ridge was tight and the first-floor landing was narrow. We had to position the new structural floor steels carefully to maximise ceiling height while designing a winder staircase that met Building Regulations headroom rules without encroaching on the box room.

03. ORAMA SCOPE

Scope & approach

Working from external scaffolding under a temporary weatherproof roof, we installed steel floor beams between the party walls, framed a full-width rear dormer, insulated to current Part L standards, built a matching timber staircase, and fitted out the bedroom and en-suite.

04. PLANNING & COORDINATION

Planning & design coordination

Secured a Lawful Development Certificate under Permitted Development rights, Party Wall agreements with both adjoining neighbours, and full Building Control approval including fire door and escape route upgrades.

EXECUTION STAGES

Construction stages

Sequenced by Costas Joannides to ensure structural integrity, tidy site coordination, and seamless transitions between trades.

01Phase

Scaffolding & Structural Floor

Erecting tin-hat scaffolding, hoisting RSJ steel beams into party wall pockets, and laying new independent floor joists.

Verified on SiteStage 01
02Phase

Dormer Framing & Weatherproofing

Constructing the rear dormer timber shell, fitting high-performance PIR insulation, rooflights, and weatherproof cladding.

Verified on SiteStage 02
03Phase

Staircase & First-Fix Services

Opening the landing trimmer, fitting the bespoke flight, and routing first-fix plumbing and electrics for the en-suite.

Verified on SiteStage 03
04Phase

Joinery, En-Suite & Handover

Plasterboarding, en-suite tiling and sanitaryware, bespoke eaves storage joinery, fire doors, and Building Control sign-off.

Verified on SiteStage 04

IMAGE GALLERY

Before, progress & completion

Select any photograph to view it enlarged.

PROJECT PHOTOGRAPHY

Project gallery

Photography documenting the project from existing condition through to completion.

Unconverted loft with exposed rafters and no usable floor structure
New stud framing, insulation and rooflights during the conversion
Completed loft bedroom with built-in eaves storage and rooflight daylight
Compact en-suite shower room formed within the converted loft

PROJECT OUTCOME

Outcome

A calm, light-filled top floor suite that adds a generous double bedroom, shower room and full-width eaves storage while preserving every room on the floor below.

  • Full-width rear dormer maximising usable floor area and head height
  • New staircase integrated seamlessly above the existing first-floor flight
  • Compact luxury en-suite shower room with concealed cistern and wall niches
  • Bespoke flush-fitted storage built into the front roof slope eaves

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Book a free initial home visit in Potters Bar, Hertfordshire or North London. Direct consultation with founder Costas Joannides.

Free initial consultationBase: Potters Bar (EN6)45+ years residential craft
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