delivered the opinion of the court.

Smith brought mandamus against the building inspector, Williams, to compel him to issue a permit for a public garage. She obtained a judgment; the case was brought here and reversed, 76 Colo. 151, 230 Pac. 395. The ground of reversal was that an issue of fact, that is, whether plaintiff had expended money on the faith of a permit which had beeri afterwards revoked, was still undetermined. That issue has now been tried and determined in favor of the plaintiff, and the building inspector brings the case here again. His principal point is that we were wrong in the former opinion in saying that the question of public health and safety was forestalled by the action of the council in granting the leave to build, under Pratt v. Denver, 72 Colo. 51, 209 Pac. 508. He argues that the city may and' it is its duty to suppress everything dangerous to public health and safety, and that no permit can be granted for such a thing. The proposition is undoubtedly right but the question of danger or not is for the council, and they, having determined it, cannot afterwards revoke their decision, on the same evidence, to the detriment of the licensee who has substantially altered his position in reliance on it.

The supersedeas is denied and judgment affirmed.

Mr. Chief Justice Allen and Mr. Justice Whitford concur.