How much does a loft conversion cost in North London?

Between £40,000 and £95,000 in 2026 depending on type. A Velux starts around £40,000, a rear dormer runs £50,000 to £65,000, and a mansard £70,000 to £95,000 or more.

Do I need planning permission in a North London conservation area?

Usually yes. Conservation area status normally restricts Permitted Development rights, and some streets carry Article 4 directions that remove them further. Check your address on your council's website before planning the work.

Which loft conversion suits a 1930s semi?

Often a hip-to-gable, sometimes combined with a rear dormer. The hipped side roof on these houses wastes internal volume, and squaring it off recovers the space.

Which loft conversion suits a Victorian terrace?

Usually an L-shaped dormer, which wraps around the rear outrigger and typically produces a bedroom plus a bathroom. Where head height is poor, a mansard may be the better option.

How long does a loft conversion take in North London?

Four to six weeks on site for a Velux, six to eight for a rear dormer, ten to sixteen for a mansard. Add design time, and eight to twelve weeks more if planning permission is needed.