The two most common types of loft conversion in Macclesfield are the Velux (rooflight) conversion and the dormer conversion. Both can create excellent usable space, but they suit different properties and budgets. This guide explains the key differences.
Velux / Rooflight Conversions
A Velux conversion retains the existing roof structure and adds roof windows (rooflights) to bring in light and ventilation. The floor is strengthened, insulation is added, and the space is fitted out as a habitable room.
- Lower cost than a dormer — typically £20,000–£35,000.
- Least disruptive to the existing roof structure.
- More likely to fall within permitted development.
- Suitable where there is already sufficient head height (ideally 2.2m+).
- Limited by the existing roof pitch — lower-pitched roofs may not provide enough usable floor area.
Dormer Conversions
A dormer conversion extends the roof outwards to create a vertical-walled section with its own roof. This dramatically increases the usable floor area and head height.
- More usable floor space than a Velux conversion.
- Higher cost — typically £35,000–£55,000 for a rear dormer.
- Rear dormers generally fall within permitted development; front dormers do not.
- Suitable for most house types, including those with lower roof pitches.
- Can accommodate an en-suite bathroom more easily than a Velux conversion.
Which Is Right for Your Home?
If your loft already has good head height and you primarily need a bedroom or home office, a Velux conversion may be sufficient and more cost-effective. If you need maximum usable space, want to add an en-suite, or your roof pitch is relatively shallow, a dormer conversion is likely the better choice.
Planning a Project in Macclesfield?
Speak to J & L Building & Design
Over 30 years building across Macclesfield and Cheshire. One point of contact from first call to final handover. Free, no-obligation quotes.




