Butterfield Drive, Pontprennau, Cardiff, CF23 8NE

A semi-detached home in Pontprennau with solar panels already fitted and an EPC rating of B, which puts it well ahead of most homes at this price. The solar photovoltaics generate zero-carbon electricity on site, and the rest of the efficiency picture is just as strong. Fully double glazed windows throughout, filled cavity wall insulation, 200mm of loft insulation, and a mains gas boiler with a programmer, room thermostat and TRVs. That adds up to primary energy use of only 60 kWh per square metre per year and a score of 89 out of 100. For an owner-occupier it means lower running costs from day one. For an investor it is a ready-made answer to the energy performance rules that now apply to lettings. Inside, the ground floor offers a living room to the front, a kitchen and dining area, a hallway and a downstairs WC. Upstairs there are well-proportioned bedrooms served by the family bathroom, off a central landing. Outside, there is a patio and lawn with a shed to the rear, plus off-road parking at the front. Council tax band D, around £1,926 a year. Floor area 91 square metres. EPC B (89), certificate 2889-1901-9200-4712-4210, valid until 3 November 2032. Pontprennau has schools, shops and green space close by, with Cardiff city centre within easy reach.