Loft Conversion Cost in Birmingham: 2026 Price Guide

Birmingham's roof shapes are less uniform than in a lot of Victorian cities, which is worth knowing before you get a loft conversion quote. The steep, decorative gables of Bournville's Arts and Crafts housing are a genuinely different proposition from the straightforward pitched roofs of a Moseley or Kings Heath terrace, and a builder unfamiliar with the estate's construction can under- or over-estimate a job there.

• Rooflight (Velux) conversion: £19,000-£33,000
• Rear dormer conversion: £33,000-£48,000
• Hip-to-gable or mansard: £48,000-£72,000+

Party walls on Birmingham's terraces

Most loft conversions in Selly Oak, Kings Heath and the tighter parts of Moseley involve a shared party wall, meaning a Party Wall Agreement with neighbours is required before work starts. This is one of the more common causes of delayed start dates on Birmingham loft projects specifically - budget several weeks for it rather than assuming it'll be quick.

Rear-facing dormers stay simplest

A rear dormer that doesn't face the street usually falls under permitted development across most of Birmingham, which is why it's the default recommendation almost everywhere in the city - the main exception is inside Edgbaston or Bournville's conservation boundaries, where even rear alterations sometimes get closer scrutiny than elsewhere.