Rooms can be cold for a number of reasons - often we find draughts, poor cavity wall insulation or loft insulation. As part of your new build handover process you will no doubt have had an air test. The issue with this is that it can actually can be conducted on a similar property or corners are cut to cheat (taping up areas of heat loss to make it pass are common, for example trickle vents and around skirting)
Commonly we find a lack of efficient heating systems and it can be something as simple as the radiators not working... In some instances the heating is completely incorrectly connected or in the example shown below, it is often the underfloor heating system not in the room at all!
A Snaggers Blog
HomeSnag inspectors are experts at inspecting new-build houses. This blog shares real examples to demonstrate the importance of getting your new build house or apartment snagged professionally
"I always insist that there is specific provision for snagging," says Thomas Moran, partner at law firm Speechly Bircham. "Reputable developers do this anyway, but there are all sorts in the market, some big, some small, so you need a contractual promise than within, say, a year they will come back to remedy any minor defects in the finishing."
read full article here