delivered the opinion of the Court.
A zоning ordinance of the City of Cambridge divides the city into three kinds of districts: residential, business and unrestricted. Each of these districts is sub-classified in resрect of the kind of buildings which may be erected. The ordinance is án elaborate one, and of the same general character as that considered by this Court in
Euclid
v.
Ambler Co.,
*186
The suit was for a mandatоry injunction directing the city and its inspector of buildings to pass upon an application of the plaintiff in error for a permit to erect any lawful buildings, upon a tract of land without regard to the provisions of the ordinance including such tract within a residential district. The case was referred to a master to make and report findings of fact. After a view of the premises and the surrounding territory, and a hearing, the master made and reported his findings. The case came on to be heard by a justice of the court, who, after confirming the master’s report, reported the case for the determination of the full court. Upon consideration, that court sustained thе ordinance as applied to plaintiff in error, and dismissed the bill.
A condensed statement of facts, taken from the master’s report, is all that is necessary. When the zoning ordinance-was enacted, plaintiff in error was and still is the owner of a tract of land containing 140,000 square feet, of which the locus here in question is a part. The locus contains about 29,000 square feet, with a frontage on Brookline street, lying west, of 304.75 feet, on Henry street, lying north, of 100 feet, on the other land of the plaintiff in error, lying east, of 264 feet, and on land of the Ford Motor Company, lying southerly, of 75 feet. The territory lying east and south is unrestricted. The lands beyond Henry street to the north and beyond Brookline street to the west are within a restricted residential district. The effect of the zoning is to separate from the west end of plaintiff in еrror’s tract a strip 100 feet in width. The Ford Motor Company h'as a large auto assembling factory south of the locus; and1 a soap factory and the tracks of the Boston & Albany Railroad lie near. Opposite the locus, on Brookline street, and included in the samе district, there are some residences; and opposite the locus, on Henry street, and in the same district, are other residenсes. The locus is now vacant, *187 although it was once occupied by a mansion house. Before the passage of the ordinance in question, plaintiff in error had outstanding a contract for the sale of the greater part of his entire tract of land for thе sum of $63,000. Because of the zoning restrictions, the purchaser refused to comply with the contract. Under the ordinance, business and industry оf all sorts are excluded from the locus, while the remainder of the tract is unrestricted. It further appears that provision has beеn made for widening Brookline street, the effect of which, if carried out, will be to reduce the depth of the locus to 65 feet. After а statement at length of further facts, the master finds “ that no practical use can be made of the land in question for residential purрoses, because among other reasons herein related, there would not be adequate return on the amount of any investmеnt for the development of. the property.” The last finding of the master is:
“ I am satisfied that the districting of the plaintiff’s land in a residence district would not promote the healt1 safety, convenience and general welfare of the inhabitam.-. of that part of the defеndant City, taking into account the natural development thereof and the character of the district and the resulting benefit to accrue to the whole City and I so find.”
It is made pretty - clear that because of the industrial and railroad purposes to which the'immediately adjoining lands to the south and east have been devoted and for which they are zoned, the locus is of comparatively littlе value for the limited uses permitted by the ordinance.
We quite agree with the opinion expressed below that a court should not set aside the determination of public officers in such a matter unless it is clear that their action “ has no foundation in reason and is а mere arbitrary or irrational exercise of power having no substantial relation to the public health, the public morals, the рublic *188 safety or the public welfare in its proper sense.” Euclid v. Ambler Co., supra, p. 395.
An inspection of a plat of the city upon which the zoning districts are outlined, taken in connection with the master’s findings, shows with reasоnable certainty that the inclusion of the locus in question is not indispensable to the general plan. The boundary line of the residentiаl district before reaching the locus runs for some distance along the streets, and to exclude the locus from the residential district requires only that such line shall be continued 100 feet further along Henry street and thence south along Brookline street. There does not аppear to be any reason why this should not be done. Nevertheless, if that were all, we should not be warranted in substituting our judgment for that of the zoning authorities primarily charged with the duty and responsibility of determining the question.
Zahn
v.
Bd. of Public Works,
Judgment reversed.