BER Cert 4 bedroom house, semi-detached. Renovated & extended 2011: BER awarded B3
However, BER assessor in 2011 did not account for insulation levels added to subfloor during full renovation of property.
Additional insulation (spray foam) added to attic 2020. Wish to update BER to reflect this & and account for subfloor insulation as we are renewing our Mortgage.