Retrofit cost North West (UK 2026)

Terraced and 1930s semi dominate. The modal retrofit candidate in the North West is the cavity 1930s semi with an existing gas boiler; the calculator's modal case.

The Greater Manchester Combined Authority Retrofit Accelerator provides a coordinated route for area-based programmes; useful signposting for households in pilot LAs.

Phased deep retrofit on a 90 m² 1930s NW semi: £30,000to£48,000(pre-grant), £19,000to£39,000(net of BUS plus GBIS).