Original: Part B requires 20% carbon reduction, but this is no longer required as the Building Regulations is at a higher standard than current planning policy and a further reduction would adversely affect viability.
Simplified: Part B requires 20% carbon reduction, but this is no longer required as the Building Regulations is at a higher level than current planning policy and a further reduction would negatively affect viability
Simplified: Part B required 20% carbon reduction, but this is no longer required as the Building Regulations are of better quality than the current planning policy and a further reduction would badly affect success.
Simplified: Part B requires 20% carbon reduction, but this is no longer required as the Building Regulations is at a higher standard than current planning policy and a further reduction would adversely affect how the project can progress.