How Much Does a Home Extension Cost in Essex? (2025 Guide)

Home extensions are one of the most popular home improvement projects in Essex. Whether you're adding a kitchen extension, rear extension or loft conversion, understanding the costs upfront is essential.

Average Home Extension Costs in Essex (2025)

Costs vary significantly depending on the size, specification and location within Essex, but here's a general guide:

Single Storey Extension

A typical single storey rear extension in Essex costs between £1,500 and £2,500 per m², depending on the specification. A 20m² extension therefore typically costs between £30,000 and £50,000.

Loft Conversion

A basic loft conversion in Essex starts from around £30,000 for a simple Velux conversion and can reach £60,000+ for a full dormer. These add significant value to your home.