The matter of the cost of building highrise accommodation as opposed to other low rise options was a far more definite matter and a number of cost evaluations undertake in the 1970s found that highrise units were more costly than other units because of the infrastructure and maintenance requirements. According to Ash (1980), in the British context it was the remo val of height weighted subsidies, combined with the high maintenance cost of highrise, that ultimately led to the this form falling out of favour with local housing authorities.