In England & Wales, there are two routes to legally install a domestic biomass, wood or solid fuel burning appliance. HETAS registered installers can self certify that their work complies with the relevant building regulations, and issue the customer with a certificate of compliance (online or paper based notifications available). HETAS will notify the relevant Local Authority on their behalf. Alternatively, the customer must apply to the Local Authority Building Control department for a Building Notice, and pay the appropriate fee which can cost up to £300 per job.