must turn square corners when they deal with the Government,’ it is hard to see why the government should not be held to a like standard of rectangular rectitude when dealing with its citizens.” (48 Harv.L.Rev. 1299.)’ (Woodie v. Byram, 132 Cal.App.2d 651, 654 [282 P.2d 920].) Commentators have been uniformly critical of judicial reluctance to invoke the doctrine of estoppel against a governmental agency where justice and equity so require. (2 Davis, Administrative Law Treatise, supra, pp. 514-519;-Newman, Should Official Advice be Reliable? 53 Colum.L.Rev. 374; Comment, Never Trust a Bureaucrat: Estoppel Against the Government, 42 So.Cal.L.Rev. 391; Comment, Estoppel Against the Government in California, 44 Cal.L.Rev. 340.)
“In this state we have rejected the rigid application of the notion that equitable estoppel may not be invoked against the government. The doctrine has most commonly been applied where tort claimants have been misled by governmental employees with respect to procedural or time requirements of a claim statute. (Rand v. Andreatta, 60 Cal.2d 846, 849 [36 Cal.Rptr. 846, 389 P.2d 382]; Farrell v. County of Placer, supra, 23 Cal.2d 624, 628; Cruise v. City and County of San Francisco, 101 Cal. App.2d 558, 563 [225 P.2d 988]; see Merco Constr. Engineers, Inc. v. Los Angeles Unified School Dist., 274 Cal.App.2d 154, 160 [79 Cal.Rptr. 23].) The application of the doctrine, however, has not been confined to such cases. It has been applied in many varying situations. (See Farrell v. County of Placer, supra, 23 Cal.2d 624, 627-628.) For example, the doctrine has been applied to estop a school district from denying a teacher permanent classification (Briney v. Santa Ana High School Dist., 131 Cal.App. 357, 361 [21 P.2d 610]; Crawford v. Board of Education, 20 Cal.App.2d 391, 396 [67 P.2d 348]); to estop a municipality from asserting a violation of a zoning regulation (Woodie v. Byram, supra, 132 Cal.App.2d 651, 654); to estop a city from denying the validity of a contract to serve water to a subdivision outside the boundary of a city (Sawyer v. City of San Diego, 138 Cal.App.2d 652, 662 [292 P.2d 233]); and to estop a city from abandoning a condemnation action (McGee v. City of Los Angeles, 6 Cal.2d 390, 394 [57 P.2d 925]; Times-Mirror Co. v. Superior Court, 3 Cal.2d 309, 326 [44 P.2d 547].)
“It has been said that ordinarily estoppel should not be invoked where to do so would be harmful to some specific public policy or public interest or where it would enlarge the power of a governmental agency or expand the authority of a public official. (McNeil v. Board of Retirement, 51 Cal.2d 278, 285 [332 P.2d 281]; Boren v. State Personnel Board, 37 Cal.2d 634, 643 [234 P.2d 981]; County of San Diego v. California Water