Pay attention to the appliances and fittings. Look for A-rated (energy efficient) kitchen appliances. Also look for aerated taps, which reduce water use.
If mains gas is available, use it for cooking as well as heating. If it’s not, consider an electric induction hob, which saves energy over a conventional electric or halogen hob.
If you are undertaking a bathroom renovation, think about the amount of water you are going to consume. You can usefully reduce this by buying low flush toilets, low flow showers and basin taps and a smaller capacity bath.
(Advice kindly provided by the Federation of Master Builders).