Earlier editions: 2026-09
Alameda County Municipal Code Ch. 16.12 Final Maps and Parcel Maps
Alameda County Municipal Code · 2026-10 edition · updated 2026-10-04 · Alameda County
Cite as: Alameda County Municipal Code Chapter 16.12 · Text as of 2026-10-04
16.12.010 - Title block.¶
Each sheet of the map shall contain a title, consisting of the tract number or parcel map number, but no commercial name or title shall appear on the map as a designation. Below the number shall appear "Township, Alameda County, California." Next the name of the surveyor or firm, county and state, the scale and date. If partly within an incorporated city, the name of the city shall also appear. If the subdivision is a condominium project, the statement "A Condominium Project" or "For Condominium Purposes" shall appear beneath the tract number.
(Prior gen. code § 8-6.0)
16.12.020 - Title sheet.¶
The title sheet shall show the title block, owner's certificate, acknowledgements, surveyor's certificate, county surveyor's certificate, county recorder's certificate, a subdivision of, being the name, and legal designation of the tract in which the survey is located and any other statements or notes that are required.
(Prior gen. code § 8-6.1)
16.12.030 - Map sheet.¶
The scale of the map shall be one inch equals forty (40) feet or less, unless otherwise approved by the county surveyor. Every sheet comprising the map shall show the title block, north arrow, legend, basis of bearings, sheet number and number of sheets comprising the map.
(Prior gen. code § 8-6.2)
16.12.040 - Index sheet.¶
If there are more than three map sheets, there shall be an index sheet preceding the map sheets.
(Prior gen. code § 8-6.3)
16.12.050 - Exterior boundary.¶
The exterior boundary of the land included within the subdivision shall be indicated by the following symbol: a long line (minimum one-half inch in length) followed by three short lines (maximum one-eighth inch each in length), the width of said line segments shall be such that they are distinctive.
(Prior gen. code § 8-6.4)
16.12.060 - Lot and parcel numbering.¶
Lots or parcels shall be numbered in numerical order starting from numeral "1." Circles, squares, or other geometrical figures shall not be drawn around the letter or numbers. If possible, each block shall be shown entirely on one sheet; each lot or parcel must be shown entirely on one sheet.
(Prior gen. code § 8-6.5)
16.12.070 - Lands for private use—For public use—Designations.¶
The map shall particularly define, delineate and designate all lots or parcels intended for sale or reserved for private purposes, all parcels offered for dedication for any purpose, public or private, and any private streets, with all dimensions, boundaries and courses clearly shown and defined in every case. Dimensions of lots or parcels shall be given as the net dimensions only to the boundaries of adjoining streets that will be accepted for dedication or where the street is held in fee by the county. No ditto marks shall be used. Parcels offered for dedication but not accepted shall be designated by letter, and private streets offered but not accepted for dedication shall have inserted the words, "Private Street."
(Prior gen. code § 8-6.6)
16.12.080 - Lands for public use—Dedication—Offer of.¶
All parcels of land shown on any map and intended for any public use shall be offered for dedication for public use except those parcels, other than streets, which are intended for the exclusive use of the lot owners in the subdivision, their licensees, visitors, tenants, and servants.
(Prior gen. code § 8-6.7)
16.12.090 - Line of higher high water—Designation.¶
The map shall show the line of higher high water in case the subdivision is adjacent to tidewater.
(Prior gen. code § 8-6.8)
16.12.100 - Streets—Side lines—Widths.¶
The map shall show the monument lines and side lines of all streets, the total width of all streets, the width of the portion being dedicated and the width of existing dedication, and the widths each side of the monument line, also the width of railroad rights-of-way appearing on the map.
(Prior gen. code § 8-6.9)
16.12.110 - Easements—Descriptions.¶
The map shall show the side lines of all easements to which the lots are subject. Easements must be clearly labeled and identified, and if already of record, the recorded reference given. If any easement of record is not definitely located, a statement of the easement must appear on the title sheet. The width of the easement and the lengths and bearings of the lines thereof and sufficient ties thereto to definitely locate the easement with respect to the subdivision must be shown. If the easement is being dedicated by the map, it shall be properly set out in the owner's certificate of dedication.
(Prior gen. code § 8-6.10)
16.12.120 - Dedication.¶
If dedication or offers of dedication are required, they may be made either by certification on the map or by separate instrument. If dedications or offers of dedication are made by separate instrument, such dedication or offers of dedication shall be recorded concurrently with, or prior to, the map being filed for record.
(Prior gen. code § 8-6.11)
16.12.130 - Street names—Approval by advisory agency—Designations.¶
In order to avoid duplication, names to be used on new streets shall be subject to the approval of the advisory agency. If any designation be numbers, they shall be spelled out completely, using hyphens in such forms as "Twenty-Third Street." The words: "Avenue," "Boulevard," "Place," etc., shall be spelled out in full.
(Prior gen. code § 8-6.12)
16.12.140 - Procedure.¶
Upon approval of the tentative map, prints of the final map or parcel map shall be submitted to the county surveyor for his examination far conformance to the approved tentative map, local ordinance, the Subdivision Map Act, and the Land Surveyor's Act.
(Prior gen. code § 8-6.13)
16.12.150 - Data and material to accompany the submittal.¶
The following data and material shall be provided by the subdivider or his agent:
A. A traverse sheet or sheets in a form approved by the county surveyor giving latitudes and departures and coordinates of the boundary of the subdivision, blocks, lots, or parcel and monument lines therein;
B. A minimum of three sets of prints of the map;
C. Submit a copy of the record owner deed and/or those deeds used in the survey, i.e., senior, adjoiners and easements;
D. Submit a current title report, and deeds of trust;
E. Plans, cross sections, profiles and specifications of the street improvements, grading, drainage facilities, and erosion and siltation control measures or structures and such drawings and specifications as the county surveyor may require. The plans and drawings shall be drawn to a scale not to exceed one inch equals forty (40) feet horizontal and one inch equals four feet vertical, unless prior approval is granted by the county surveyor. Plans and drawings shall be in the form specified by the county surveyor and shall be certified by a registered civil engineer;
F. A statement of the water supply installed or available for the subdivision, including information as to the source and adequacy of the supply;
G. A statement of the sewerage works and sewage disposal installed, proposed or available for the subdivision, together with a statement from the county health officer that the proposed system will comply with all health department rules and regulations and state laws and operate without creating a public or private nuisance, or a statement shall be required where the subdivision is to be sewered by connection to an existing public sanitary sewer system;
H. The tracing of the map shall contain original signatures and shall be submitted for certification when notified by the county surveyor; in addition to the tracing of the map there shall be submitted three sets of prints of the map and one set of blue line cloth prints of the map.
(Prior gen. code § 8-6.14)
16.12.160 - Fees payable for processing a final map—Evidence of payment to county surveyor.¶
The subdivider shall pay to the county for the purpose of checking, investigating, surveying, and other matters required by law and these regulations, the sum of one hundred dollars ($100.00) as a fee for filing a final map and in addition shall pay to the county the actual cost of the checking of the map, plans and specifications, and investigations incidental thereto. When prints of the map and accompanying data and material are presented to the county surveyor for examination, the subdivider shall give evidence to the county surveyor that he has deposited with the county treasurer the sum of one hundred dollars ($100.00) and an additional amount computed on the basis of three dollars ($3.00) for each lot or parcel shown on the map or two hundred dollars ($200.00), whichever is greater. The amount of three dollars ($3.00) per lot or parcel or two hundred dollars ($200.00), whichever is greater, is intended as an estimate of the cost of checking. At such time as the number of street monuments have been approved by the county surveyor, the subdivider shall deposit with the county treasurer a minimum amount of fifty-five dollars ($55.00) per street monument, the total amount to pay the county for the purpose of field checking the street monuments.
If the amount so deposited exceeds the actual cost to the county, the subdivider shall be reimbursed for the balance remaining. If the actual cost exceeds the deposited amount, the county surveyor shall withhold certification of the map until the subdivider presents a receipt for the deposit of the excess amount.
(Prior gen. code § 8-6.15)
16.12.170 - Fee payable for processing a parcel map.¶
The subdivider shall pay to the county for the purpose of checking, investigating, surveying and other matters required by law and these regulations for processing a parcel map the fee fixed by the schedule adopted for that purpose by the board of supervisors and in effect at the time the parcel map is submitted for checking. Said payment shall be submitted to the county surveyor at the time the parcel map is submitted for checking.
(Prior gen. code § 8-6.16)
16.12.180 - Transmittal of final map.¶
After the county surveyor's approval and certification of the final map, it shall be transmitted to the clerk of the board of supervisors for final action and ultimate transmittal to the county recorder.
(Prior gen. code § 8-6.17)
16.12.190 - Action on parcel map.¶
The county surveyor is authorized to take final approval action on a parcel map as well as to reject offers of dedication. The county surveyor shall disapprove a parcel map for failure to meet or perform any of the requirements or conditions imposed by the Subdivision Map Act, this chapter, or the approved tentative map for the subdivision; provided that a parcel map shall be disapproved only for failure to meet or perform requirements or conditions which were applicable to the subdivision at the time or approval of the tentative map; and provided further that such disapproval shall be accompanied by a finding identifying the requirements or conditions which have not been met or performed. A parcel map shall not be disapproved when the failure to meet requirements or conditions is the result of a technical or inadvertent error which does not materially affect the validity of the map as may be determined by the county surveyor. If the county surveyor approves a parcel map, it shall be certified and ultimately transmitted to the county recorder.
(Prior gen. code § 8-6.18)
16.12.200 - Action on final map.¶
The board of supervisors shall take final approval action on final maps. It shall disapprove a final map for failure to meet or perform any of the requirements or conditions imposed by the Subdivision Map Act, this chapter, or the approved tentative map for the subdivision; provided that a final map shall be disapproved only for failure to meet or perform requirements or conditions which were applicable to the subdivision at the time of approval of the tentative map; and provided further that such disapproval shall be accompanied by a finding identifying the requirements or conditions which have not been met or performed. A final map shall not be disapproved when the failure to meet requirements or conditions is the result of a technical or inadvertent error which does not materially affect the validity of the map as may be determined by the board of supervisors. If the board of supervisors approves a final map, it shall be certified and ultimately transmitted to the county recorder.
(Prior gen. code § 8-6.19)
16.12.210 - Amended map.¶
A map may be amended in conformance with the provisions of the Subdivision Map Act and local ordinance and shall be entitled "Amended Map of _______."
(Prior gen. code § 8-6.20)
16.12.220 - Amendment shown.¶
All corrections or omissions shall be boxed and the errors removed from the map with a certified statement by the surveyor stating, in general, the correction or omission being made in addition to the recording information of the original map.
(Prior gen. code § 8-6.21)
16.12.230 - Certificate of correction.¶
May be used to:
A. Correct an error in the description of real property;
B. A course error that is outside of the exterior boundary of the map. The certificate of corrections shall be upon a form approved by the county surveyor.
(Prior gen. code § 8-6.22)
16.12.240 - Reversion to acreage.¶
A map may be reverted to acreage in pursuant to all the provisions of the Subdivision Map Act and shall be entitled "Reversion to Acreage of _______."
(Prior gen. code § 8-6.23)
16.12.250 - Resubdivision.¶
Subdivided lands may be merged and resubdivided without reverting to acreage by complying with all applicable provisions of the Subdivision Map Act.
(Prior gen. code § 8-6.24)
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