Except as otherwise provided in Section 11.52.060, a building or structure shall not be used on any lot or parcel of land any portion of which abuts upon a parkway, major or secondary highway, or street unless the one-half of the highway or street which is located on the same side of the center line as such lot or parcel of land has been dedicated and improved as provided in this chapter.

Parkways, major highways, and secondary highways and streets shall be dedicated to the width from the center line specified in LACC Ord. 1494, Section 467(a)—(d), except that dedication in any case shall not be required to such an extent as to reduce the area or width of any lot or parcel of land to less than that specified in Sections 11.36.070 or 11.36.120.

Before a structure subject to the provisions of this chapter may be used, curbs, gutters, sidewalks and drainage structures where required shall be constructed at the grade and at the location specified by the road commissioner unless there already exists within the present right-of-way, or on property the owner has agreed to dedicate, curbs, gutters, sidewalks or drainage structures which are adequate and the road commissioner so finds. Sidewalks shall be not less than four feet in width unless the available portion of the highway or street is less, in which case they shall be the width specified by the road commissioner. Curbs, gutters, drainage structures and sidewalks shall comply with the standards of the road commissioner. All construction within the existing or proposed road rights-of-way shall be done under provisions of LACC Ordinance 3597 entitled "Highway Permit Ordinance of the County of Los Angeles," adopted May 28, 1940.

In lieu of dedication, the road commissioner may accept an agreement to dedicate signed by all persons having any right, title, interest or lien in the property, or any portion thereof, to be dedicated. The signatures on such agreement shall be acknowledged and the road commissioner shall record such agreement in the office of the county recorder of this county.

In lieu of the required improvements, the road commissioner may accept from any responsible person a contract to make such improvements. Said improvements shall be completed within the time specified in the agreement to improve, except that the road commissioner may grant such additional time as he or she deems necessary if, in the opinion of said road commissioner, a good and sufficient reason exists for the delay.

Such contract shall be accompanied by a deposit with the city council of a sum of money or negotiable bonds or savings and loan certificates or shares in an amount which, in the opinion of the road commissioner, equals the cost thereof. If savings and loan certificates or shares are deposited, the owners thereof shall assign such certificates or shares to the city of La Cañada Flintridge and such deposit and assignment shall be subject to all the provisions and conditions of Article III E of LACC Ordinance No. 4099.

If the estimated cost of the improvements equals or exceeds $1,000 in lieu of such deposit the applicant may file with the city council a corporate surety bond guaranteeing the adequate completion of all of the improvements, in a penal sum equal to such estimated cost.

Upon the failure of said responsible person to complete any improvement within the time specified in an agreement, the city council may, upon notice in writing of not less than ten days served upon the person, firm or corporation signing such contract, or upon notice in writing of not less than 20 days served by registered mail addressed to the last known address of the person, firm or corporation signing such contract, determine that said improvement work or any part thereof is incomplete and may cause to be forfeited to the city such portion of deposits or bonds given for the faithful performance of said work, or may cash any instrument of credit so deposited in such amount as may be necessary to complete the improvement work.

This chapter does not apply to the use, alteration or enlargement of an existing building or structure or the erection of one or more buildings or structures accessory thereto, or both, on the same lot or parcel of land, if the total value of such alteration, enlargement or construction does not exceed one-half of the current market value of all existing buildings or structures on such lot or parcel of land.

Any person deeming him or herself aggrieved may apply for a variance from any provision of this chapter pursuant to Chapters 11.43, 11.44, 11.50 and 11.51 whether he or she has applied for a modification or not. The provisions of Section 11.52.070 shall constitute additional grounds for a variance from any provisions of this chapter.