This estimate is based on a standard retrofit wall insulation installation into a 90mm wall cavity with a typical 2.4m stud height. Pricing includes the required council building consent exemption application and the installation of interconnected smoke alarms where required for compliance.

This is an indicative estimate only. Actual pricing may vary depending on the property's construction, accessibility, wall configuration, existing services within the walls, and any additional compliance or remedial work identified during a site assessment.