Opinion by
Mr. Justice Mestrezat,This is an appeal from the order and decree of the court below granting a peremptory writ of mandamus on the relation of the district attorney of Cambria County commanding and requiring the controller of the county to advertise for sealed bids upon the alterations and additions proposed to be made to the present courthouse of the county, according to plans and specifications on file in the office of the county commissioners. The facts sufficiently appear by the petition and exhibits thereto attached and the opinion of the court, and need not be repeated in detail here. We all agree that the writ was properly granted, and that the decree should be affirmed.
The controlling question in the case is whether the *244respondent as controller of the county, has the right, under the facts presented here, to refuse to advertise for bids for the proposed alterations and additions to the courthouse. He claims this right under Section 10, of the Act of June 27, 1895, P. L. 403, which provides that no contract involving an expenditure exceeding $100 shall be made by the commissioners nor the payment thereof be certified by the controller unless when made with the lowest and best bidder, after due notice to be published by the controller, when directed by the commissioners, “if he approves the purpose of the proposals invited.” The reason for the controller’s refusal to advertise for bids for the proposed improvements appear from the copy of his letter to the commissioners attached as an exhibit to relator’s petition. He “recognizes the desirability of some alterations,” but “fails to discover necessity for entering into” the large and costly improvements presented in the plans and specifications submitted by the architect of the commissioners. He vaguely insinuates some additional matters for declining to advertise for bids, but which, it is apparent, are not within his discretion.
The Act of April 15, 1834, P. L. 537, provides that it shall be lawful for the commissioners, having first obtained the approbation of two successive grand juries and of the Court of Quarter Sessions, to erect when occásion shall require the necessary buildings for the accommodation of the courts and of the several county officers. The act also imposes on the commissioners the duty to keep and maintain such buildings in suitable repair, and, having first obtained the approbation of the grand jury and of the court, it authorizes the commissioners to alter, add to, or enlarge such public buildings. The authority to determine when “occasion shall require” the erection of the buildings is vested by this act in two successive grand juries and the Court of Quarter Sessions, and after their approval the commissioners may proceed to erect the buildings: Appeal of Commrs. *245of Northampton County, 57 Pa. 452. It was said in Mahon v. Luzerne County, 197 Pa. 1, 18, that under the Act of 1834 the occasion for the erection of a public building having been determined to exist “the mode of meeting it, the size, style, arrangement, costs and location of the building were left to the discretion of the commissioners.” The control of the commissioners over these details is, however, by the Act of April 19,1895, P. L. 38, now made subject to the supervision and approval of the court: Mahon v. Luzerne County, supra. When this approval has been obtained, the act provides that the commissioners shall let the work by contract which shall be subject to the approval of the judges of the court.
It will thus be seen that the act empowers the commissioners and imposes upon them the duty to erect the necessary buildings for the accommodation of the courts after obtaining the approbation of the grand jury and the court, and after the approval by the judges of the plans and specifications which the commissioners shall adopt and submit to the court. In the case in hand, not only two but ten successive grand juries recommended and approved the proposed alterations and additions to the courthouse, and in each instance the report of the grand jury was approved by the Court of Quarter Sessions. Plans and specifications for the proposed improvements were prepared by an architect and accepted by the commissioners who submitted them to both judges of the court who approved them. The statutes authorizing the commissioners to make the proposed alterations and additions have been complied with in evex’y particular, and the commissioners have authority to proceed with the improvements, and desire to do so, but the controller, exercising the discretion he claims to be vested in him under the Act of 1895, refuses to advertise for bids on the sole ground that he does not “approve the purpose of the proposals invited” which is subject to his approval. We have pointed out above his objections to the improvement and that they are matters not within *246his discretion. The “purpose of the proposals” in th.e matter in hand is the erection of the proposed alterations and additions to the courthouse which the statutes authorize and direct to be made, and the propriety and legality of the purpose cannot therefore be questioned. The plans and specifications, showing the details of the work, in the execution of the purpose were, as the statutes declare, for the consideration and approval of the commissioners and the court. In the absence of fraud, bad faith or a disregard of public duty in connection with carrying out the improvements by the proper officials, which is not shown to exist here, the discretion of the commissioners as to the details of the work, when not abused, cannot be interfered with. The controller’s act does not confer the authority nor impose the duty claimed by the appellant. If it be so construed, it would transfer to the controller the authority and powers clearly granted to the grand jury, the court and the commissioners in the erection of public buildings without any indication in the title of the Act of 1895 of an intention to do so. We need not determine here the exact meaning of the word “purpose” in the act nor the extent of the controller’s discretion which he may exercise under the act in other cases. It is clear, under the facts of the present case, that he was not justified in refusing to advertise for bids- for making the alterations and additions to the Cambria County courthouse.
It is apparent from the facts disclosed by the record in the case that the respondent can have no valid excuse for not advertising for sealed bids for the improvements to the courthouse, as requested by the commissioners, and, therefore, the case is within the proviso to the 2d Section, of the Act of June 8, 1893, P. L. 345, and the learned judges of the court below did not err in awarding the peremptory writ in the first instance.
Decree affirmed.