This is not correct.
ALL new buildings must legally comply with the Building Regulations, a legal requirement and a statutory requirement in law.
What has gone wrong is that builders (house builders in particular) are able to use registered private companies to carry out the building control inspections, such as warranty providers like the NHBC and surveyors.
Unlike local authority building control who inspect every stage they need to for building control approval, the private companies are often satisfied to see a photograph e mailed to them if they do not make an inspection on site. They also tend to have a relationship with the builder and/or the site management and a degree of trust results meaning inspections may not be as comprehensive as they perhaps should be if at all.
Perhaps your petition should be about legal action being taken against housebuilders and building control companies when building regulations are found to have not been followed.