Extension and loft costs in Islington

Mostly Georgian and Victorian terraces, many divided into flats, with some Edwardian houses and postwar council estates.

• House extension cost in Islington

  A single-storey rear extension typically £68,000 to £106,000 all in.

  Expected £87,000

  £68,000£106,000
• Side-return extension cost in Islington

  A side-return extension typically £50,000 to £81,000 all in.

  Expected £66,000

  £50,000£81,000
• Loft conversion cost in Islington

  A loft conversion with a rear dormer typically £69,000 to £108,000 all in.

  Expected £89,000

  £69,000£108,000

This report is an informed estimate built from public data about your property and current London build costs. It is not a survey, a quote, a valuation or planning advice. Always get written quotes and, where noted, professional advice before committing to work.