Diy dormer roof dormer extensions loft conversion lancashire what is a dormer extension. at boarshurst we consider loft conversions that need dormer frames larger than for a single window as 'extensions'.. The dormer will give you loads more useable space so i would go for every time. £7.5k extra sounds a lot if you are excluding labour you'll definitely need to allow for a skip or 2 and you'll find scaffold for the non dormer approach will make life a lot easier.. Dormer loft conversion. discussion in 'uk diy' started by mike, jun 29, 2008. mike guest. hi, do the uk building regs prevent front-facing dormer loft conversions where the height of the existing roof is not exceeded ? (i'm not in a conservation area btw). thanks, mike.
Types of dormer loft conversion. the most popular type of dormer conversion in the uk is a simple flat roof dormer. as well as being the cheapest form of dormer to build, a flat roof dormer also offers the largest amount of additional internal space.. I've just bought a 3 bedroom mid terraced house in south east london and really want to put in a rear facing dormer (full height and width). the quotes we've received have been about 30k upward and we only have 20k to do the entire house.. The average cost for a diy loft conversion is £29100. you are likely to spend between £9400 and £48800 total. exact price may vary depending on your area and project details..

