Dormer Loft Conversion in Newbury — 1960s Bungalow Master Suite
A 1960s bungalow in Newbury, RG14. Converting a bungalow loft is structurally different from a standard house — the ceiling structure must carry a habitable floor load it was never designed for. This requires structural steel beams to be installed at ceiling level spanning the full width of the property. We installed two RSJ beams, built a large rear dormer to create headroom, and delivered a full master bedroom suite in what had been unusable roof space. Fourteen weeks — the most complex residential loft conversion we regularly undertake.
Project Summary
- Location
- Newbury, RG14
- Property type
- Bungalow, 1960s
- Service
- Loft Conversion
- Type
- Large rear dormer — bungalow
- Build duration
- 14 weeks on site
- New room
- Master bedroom + en-suite + dressing area
- Structural steelwork
- 2× 254×146 UC RSJ beams at ceiling level
- Dormer
- Full-width rear dormer
- Planning
- Permitted development
- Building regulations
- Approved
Build Documentation
From Groundworks to Completion
Stage 1
Steels at Ceiling Level
The first stage was the structural steel installation — before any roof work could begin. The ceiling of the bungalow was opened from above after tiles were stripped in a section. The two RSJ beams were craned into position and lowered through the open roof onto the padstones prepared in the gable walls. Building control inspection at this stage.
Stage 2
Rear Dormer
With the structural floor in place, the rear dormer frame was built. The dormer on a bungalow is proportionally very large — it occupies almost the full rear roof slope. Timber stud frame, OSB, grey fibre cement board cladding. Flat roof over the dormer with GRP membrane.
Stage 3 — Completed
Internal Conversion
Winder staircase installed through the existing ground floor hallway — the most disruptive phase for the occupants. The staircase opening required temporary boarding during completion. Full first-fix electrics, heating zone extension, and en-suite plumbing completed before boarding and skimming.
The Brief
The clients were a couple in their 50s — their children had left home, the property was a bungalow, and they wanted a separate master suite. The loft space was clearly there — a 1960s bungalow has a generous roof void — but without structural work, it couldn't become a room. The brief: a master bedroom, en-suite, and dressing area.
What We Built
Dormer loft conversion on a 1960s semi-detached bungalow in Newbury. Two 254×146 RSJ beams installed at ceiling level spanning the property width (approximately 7.2m clear span). The beams bear on padstones in the external brick gable/flank walls. Large rear dormer — approximately 5m wide × 2.5m projection — built to create full 2.4m headroom. Dormer clad in grey fibre cement board. Front slope: two Velux windows within PD limits. Staircase through the existing hallway, compact winder at 42° pitch. Master bedroom (3.8m × 3.4m), en-suite (1.5m × 2.4m), separate dressing area.
Why Berkshire Bespoke Builders
- ✓Owner-managed — Pindi on site, personally
- ✓32 years experience — time-served builder
- ✓Fixed-price quotes — itemised, written, no extras
- ✓Building regs managed — submissions + inspections
- ✓Based in Berkshire — Binfield, RG42
FAQ
Loft Conversions Questions Answered
Why is a bungalow loft conversion more expensive than a standard house?
The structural engineering required for a bungalow is substantially more complex. The original ceiling joists were not designed to carry floor loads — two RSJ beams spanning the full width must be installed at ceiling level. The beams require padstones in the gable walls, structural engineer calculations, and a crane for installation. This adds approximately £8,000–£12,000 to the structural stage compared to a standard two-storey house.
How much headroom does a bungalow loft have?
A typical 1960s bungalow has a ridge height of approximately 4.5–5m above ground level. After installing the new floor structure at ceiling level, the available headroom at the ridge is around 2.2–2.5m. The rear dormer extends the full-headroom zone across most of the usable floor area.
Does a bungalow loft conversion need planning permission?
A large rear dormer on a bungalow typically qualifies for permitted development, subject to the standard limits. Front Velux windows must not protrude above the plane of the existing roof slope. We confirmed PD status for this Newbury project at the initial site visit.
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