The validity of an assessment or supplementary assessment levied under this division shall not be contested in any action or proceeding unless the action or proceeding is commenced within 30 days after the assessment is levied. Any appeal from a final judgment in such an action or proceeding shall be perfected within 30 days after the entry of judgment.

Upon the passage of the resolutions provided for in Section 10312, the clerk of the legislative body shall, if bonds are to be issued, transmit to the superintendent of streets, or if no bonds are to be issued, to the city tax collector the diagram and assessments adopted pursuant to Section 10312. If other than a municipal corporation is conducting the proceeding, the diagram and assessment shall be transmitted to and recorded by the corresponding officer of the entity conducting the proceeding, which officer shall be the county surveyor if a county is conducting the proceeding, and that officer shall perform the duties provided in this division for the tax collector. If neither a municipal corporation nor a county is conducting the proceeding, a certified copy of the diagram and assessment shall be recorded with the county surveyor if all or any part of the improvement district is in unincorporated territory, and with the superintendent of streets or tax collector of the city if all or any part of the improvement district is an incorporated territory.

The tax collector shall record the diagram and assessment received pursuant to Section 10401 in a substantial book to be kept for that purpose in his office. Upon the date of recordation with the tax collector or, if a certified copy is recorded with the county surveyor or the superintendent of streets of the city, or both, as provided in Section 10401, then upon the date of recordation, the assessment becomes due and payable, except that the legislative body may provide in the resolution adopted pursuant to Section 10312 that all or any portion of the assessment becomes due and payable on the date of the bonds which represent the assessments or portion thereof.

Upon the passage of the resolution provided for in subdivision (a) of Section 10312, the city clerk shall record a notice of assessment, as provided for in Section 3114, modified to reflect any annual assessment for administrative cost, whereupon the assessment shall attach as a lien upon the property assessed, as provided in Section 3115, except that the annual assessment for administrative cost shall become a lien at the same time as the property tax becomes a lien each year.

All assessments not paid within 30 days after they become due, except all unpaid assessments for which bonds are to be issued, shall become delinquent and the recording officer shall add to each delinquent assessment 5 percent of the amount thereof. Assessments may be paid in whole or in part during the 30-day period after the same become due and payable.

The tax collector shall fix a time and place for the sale of various parcels of land upon which the assessments are unpaid, which date shall be not less than 60 days nor more than six months after the date of the recordation of the diagram and assessment.

When the resolution of intention does not provide for the issuance of bonds, the tax collector of the entity conducting the proceedings shall give the notice of recording the assessment and collect and receive the assessments, and proceedings shall be had as provided in this chapter.

Within 30 days after the date of the delinquency, the tax collector shall begin the publication of a notice of sale of the property upon which the assessments have not been paid. The publication shall be made in the city pursuant to Section 6066 of the Government Code.

The notice of sale published pursuant to Section 10407 need not set out the description of the various parcels of land at length, but shall describe the parcels by their respective number as they appear upon the assessment and diagram. The notice shall refer to the assessment and diagram. Opposite the description or designation of each parcel of land shall be set out the name of the owner as it appears on the last equalized assessment roll for city taxes or as known to the tax collector, the amount assessed against the parcel, the penalty for delinquency, a fee which is required to reimburse the municipality for the estimated reasonable cost of providing notice pursuant to Section 10408.5, and the costs of sale chargeable to the parcel.

At least 15 days prior to the date of the sale, the tax collector shall mail, postage prepaid, notices of sale to the owners of all property upon which the assessments have not been paid, as they appear on the last equalized assessment roll for city taxes or as known to the tax collector. The various parcels shall be designated by their legal description or by street number in addition to their respective numbers as they appear upon the assessment and diagram. Opposite the description and designation of each parcel in the notice shall be set out the amount assessed against the property, the penalty for delinquency, a fee which is required to reimburse the municipality for the estimated reasonable cost of providing notice pursuant to Section 10408.5, and the portion of the costs of the sale chargeable to the parcel.

Upon the completion of the publishing and mailing of the notices of sale, the tax collector shall file with the legislative body an affidavit setting forth the time and manner of the compliance with the requirements for publishing and mailing the notices.

At any time after delinquency and prior to the sale of any parcels of land assessed and delinquent, any person may pay the assessment, and penalties and costs due on the property, including the cost of advertising if the payment is made after the first publication of the notice of sale.

At the time and place fixed in the notice, the tax collector shall proceed with the sale of the property advertised, commencing at the head of the list and continuing in numerical order of lots or parcels of land until all are sold. He may postpone or continue the sale from day to day until the sale is completed.

The tax collector shall sell separately each parcel of land in the published notice on which the assessment remains unpaid, or so much of it as is necessary to realize the amount assessed against the parcel and penalties and costs, and fifty cents ($0.50) for a certificate of sale. If there is no other purchaser for any lot or parcel of land so offered for sale, it shall be struck off to the city as purchaser.

For each sale the tax collector shall issue an original and duplicate certificate of sale, referring to the proceedings, describing the parcel sold, and giving the name of the purchaser and the amount for which the parcel was sold. He shall deliver the original certificate to the purchaser and keep the duplicate on file in his office, in the form of a stub, in the certificate book.

At any time before the expiration of one year from the date of the sale, any property sold pursuant to this chapter may be redeemed by payment to the tax collector of the amount for which it was sold and an additional penalty at the rate of 1 percent of the amount a month until paid.

The tax collector shall pay the redemption money to the person holding the original certificate of sale and shall require that the person to whom the redemption money is paid surrender the certificate and give a receipt for the money so paid. Upon redemption of any parcel of land the tax collector shall enter the fact and date of redemption upon the duplicate certificate of sale for that parcel of land.

If property sold pursuant to this chapter is not redeemed within one year, and if the purchaser or his assignee has complied with the provisions of this chapter, the tax collector shall execute to the person named in the original certificate, or to his assignee on his application, a deed of the property described in the certificate. The deed shall refer in general terms to the proceedings under which it is issued and contain a description of the property, any assignment thereof, and the fact that no person has redeemed the property. The tax collector shall receive from the applicant one dollar ($1) for making the deed, unless the city is the purchaser, in which case no charge shall be made.