Loft Conversion

Mansard Roof Loft Conversion

An under-used loft transformed into three light-filled bedrooms and a family bathroom, with a full mansard roof extension built to Building Control standards from start to finish.

8 Weeks
From First Fix to Handover
3
New Bedrooms Added
100%
Building Control Signed Off
1
New Family Bathroom
Mansard Roof Loft Conversion — Alpha London Builders

The Brief

Our client had an unused loft space that was little more than storage — low headroom, a single small window, and no realistic way to use it as living space. They wanted three new bedrooms and a family bathroom, without moving out during the build.

Our Approach

We started with structural calculations and a full mansard roof design, then submitted the Building Control application before any work began on site. Structural steels were installed to support the new roof, followed by first-fix plumbing and electrics for the new bathroom, insulation, and a new staircase.

Because the family remained in the property throughout, we sequenced the work to keep noisy and disruptive stages to set hours, and kept the site clean and secure at the end of every day.

The Result

The finished loft conversion added three genuinely usable bedrooms and a family bathroom, with full Building Control sign-off completed before handover. The whole project ran from first fix to final handover in 8 weeks.

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