SEC. 6. That any lawful use of a building or premises existing at the time of the adoption of orders and regulations made under the authority of this Act may be continued, although such use does not conform with the provisions hereof or with the provisions of such orders and regulations; and such use may be extended throughout the building, provided no structural alteration, except those required by law or regulation, is made therein and no new building is erected. Where the boundary line of any use district divides a lot in a single ownership at the time of the adoption of orders and regulations under the authority of this Act, the commission may permit a use authorized on either portion of such lot to extend to the entire lot, but not more than twenty-five feet beyond the boundary line of the use district.

SEC. 7. That maps of the districts established by said commission and copies of all orders and regulations as to the height and area of buildings to be erected therein and as to the uses to which such buildings may be lawfully devoted, and copies of all other official orders and regulations of the commission shall be filed in the office of the Engineer Commissioner of the District of Columbia. Copies of all orders and regulations shall be published in one or more newspapers printed in the District of Columbia for the information of all concerned. SEC. 8. That it shall be unlawful to use or permit the use of any building or premises or part thereof hereafter created, erected, changed, or converted wholly or partly in its use or structure until a certificate of occupancy shall have been issued by authority of said zoning commission.

SEC. 9. That buildings erected, altered, or raised, or converted in violation of any of the provisions of this Act or the orders and regulations made under the authority thereof are hereby declared to be common nuisances; and the owner or person in charge of or maintaining any such buildings, upon conviction on information filed in the police court of the District of Columbia by the corporation counsel or any of his assistants in the name of said District, and which court is hereby authorized to hear and determine such cases, shall be adjudged guilty of maintaining a common nuisance, and shall be punished by a fine of not more than $100 per day for each and every day such nuisance shall be permitted to continue, and shall be required by said court to abate such nuisance. The corporation counsel of the District of Columbia may maintain an action in the Supreme Court of the District of Columbia in the name of the District of Columbia to abate and perpetually enjoin such nuisance.

SEC. 10. That the Commissioners of the District of Columbia shall enforce the provisions of this Act and the orders and regulations adopted by said Zoning Commission under the authority thereof, and nothing herein contained shall be construed to limit the authority of the Commissioners of the District of Columbia to make municipal regulations as heretofore: Provided, That such regulations, are not inconsistent with the provisions of this law and the orders and regulations made thereunder. In interpreting and applying the provisions of this Act and of the orders and regulations made thereunder they shall be held to be the minimum requirements for the promotion of the public health, safety, comfort, convenience, and general welfare. This Act shall not abrogate or annul any easements, covenants, or other agreements between parties: Provided, however, That as to all future building construction or use of premises

where this Act or any orders or regulations adopted under the authority thereof impose a greater restriction upon the use of buildings or premises or upon height of building, or requires larger open spaces than are imposed or required by existing law, regulations, or permits, or by such easements, covenants, or agreements, the provisions of this Act and of the orders and regulations made thereunder shall control. SEC. 11. That all laws or parts of laws and regulations in conflict with the provisions of this Act are hereby repealed.

Approved, March 1, 1920.

[S. 3269.]

An Act To amend an Act regulating the height of buildings

in the District of Columbia, approved June 1, 1910

Be it enacted by the Senate and House of Representatives of the United States of America in Congress assembled, That an Act entitled "An Act to regulate the height of buildings in the District of Columbia," approved June 1, 1910, be, and it is hereby, amended by adding at the end of paragraph 5 of said Act the following proviso: "And provided further, That a building be permitted to be erected to a height not to exceed one hundred and thirty feet on lots 15, 804, and 805, square 322, located on the southeast corner of Twelfth and E Streets northwest, said building to conform in height and to be used as an addition to the hotel building located to the east thereof on lot 18, square 322."

Approved, June 7, 1924.

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[H. R. 11214]

An Act To amend an Act regulating the height of buildings in the District of Columbia, approved June 1, 1910, as amended by the Act of December 30, 1910

Be it enacted by the Senate and House of Representatives of the United States of America in Congress assembled, That paragraph 3 of section 5 of an Act entitled "An Act to regulate the height of buildings in the District of Columbia," approved June 1, 1910, as amended by the Act of December 30, 1910, be, and it is hereby, further amended to read as follows: "On a residence street, avenue, or highway no building shall be erected, altered, or raised in any manner so as to be over eight stories in height or over ninety feet in height at the highest part of the roof or parapet, nor shall the highest part of the roof or parapet exceed in height the width of the street, avenue, or highway upon which it abuts, diminished by ten feet, except on a street, avenue, or highway sixty to sixty-five feet wide, where a height of sixty feet may be allowed; and on a street, avenue, or highway sixty feet wide or less, where a height equal to the width of the street may be allowed: Provided, That any church, the construction of which had been undertaken but not completed prior to the passage of this Act, shall be exempted from the limitations of this paragraph, and the Commissioners of the District of Columbia shall cause to be issued a permit for the construction of any such church to a height of ninety-five feet above the level of the adjacent curb."

Approved, February 21, 1925.

[H. R. 9398]

An Act To amend an Act regulating the height of buildings

in the District of Columbia, approved June 1, 1910.

Be it enacted by the Senate and House of Representatives of the United States of America in Congress assembled, That an Act entitled "An Act to regulate the height of buildings in the District of Columbia," approved June 1, 1910, be, and it is hereby, amended by adding at the end of paragraph 5 of said Act the following proviso:

And further provided, That the building to be erected on lots 813, 814, and 820, in square 254, located on the southeast corner of Fourteenth and F Streets northwest, be permitted to be erected to a height not to exceed one hundred and forty feet above the F Street curb.

Approved, April 16, 1926.

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