Dormer vs Velux?

When Surrey homeowners start looking at loft conversions, the biggest decision is often whether to go for a Velux conversion or a dormer conversion. A Velux option is usually the simpler route because it works within the existing roof slope, but it still depends on the loft already having decent usable height. Planning Portal guidance notes loft conversions generally need around 2.2m of existing height, and your chosen design still has to comply with Building Regulations. A dormer, on the other hand, changes the roofline to create more headroom and more practical floor space. That can make a huge difference if you want a proper bedroom, office, or en-suite rather than just a room that technically exists on paper.

For many Surrey homes, the choice comes down to this: Velux if you want the least structural change, dormer if you want the best everyday usable space. At Bradley Thomas Homes, we always look at the property first, because the right answer depends on the roof structure, the staircase position, and what you actually want the room to do.