It depends on the style and size of the conversion, but in general, a loft conversion will take between 1-2 months. A loft conversion is a substantial building project, and plans will need to be drawn up. This may add to the time it takes to complete your loft conversion.
Machynlleth
Machynlleth, often described informally as Mach, is a market town, neighborhood and electoral ward in Powys, Wales and within the historic borders of Montgomeryshire (Welsh: Sir Drefaldwyn). It is in the Dyfi Valley at the crossway of the A487 as well as the A489 roads. At the 2001 Census it had a population of 2,147, rising to 2,235 in 2011. Machynlleth was the seat of Owain Glyndwr's Welsh Parliament in 1404, and because of this claims to be the "ancient capital of Wales". Nevertheless, it has never ever held any kind of main acknowledgment as a capital. It got city condition in 2000 and also 2002, but was not successful. It is twinned with Belleville, Michigan. Machynlleth held the National Eisteddfod in 1937 and 1981.