Title 17 — SUBDIVISIONS AND LAND DIVISIONS
Chapter 17.20 — SUBDIVISIONS—FINAL MAPS
Mono County Municipal Code · 2026-09 edition · updated 2026-10-02 · Mono County
17.20.010 - Content and form—Generally.¶
The general form and contents of the final map shall comply with the Subdivision Map Act in the Government Code, Section 66433 et seq., and with requirements of Sections 17.20.020 through 17.20.150.
(Ord. 81-493 § 27, 1981; Ord. 74-446 Art. II § 29(A), 1974.)
17.20.015 - Supplemental map sheets.¶
With respect to any final map, the director of public works may require the preparation of a supplemental map sheet or sheets, to be recorded simultaneously with the final map, containing the information described in Government Code Section 66434.2(b) and/or such other information pertaining to the map as the director of public works deems appropriate. Any such supplemental sheet or sheets shall conform to the requirements of Government Code Section 66434.2(a).
(Ord. 07-04 § 1, 2007.)
17.20.020 - Expiration—Extension of time.¶
A.
An approved or conditionally approved tentative map shall expire twenty-four months after its approval or conditional approval.
B.
Upon written application filed with the planning department not later than forty-five days prior to the expiration of the approved or conditionally approved tentative map, the time at which the map expires may be extended for a one-year period or successive one-year periods not to exceed a total of three additional years.
C.
Where there has been a timely written application for an extension of a tentative map, the tentative map shall not expire until a decision has been given by the planning commission and any appeals therefrom to the board of supervisors have been decided or the time limits for such appeals have expired. The time for appeal under this section is fifteen days after the planning commission has denied the extension. In all other cases, the expiration of the approved or conditionally approved tentative map shall terminate all further proceedings thereon, and no applications for extensions or modifications shall be considered, and no final map of all or any portion of the real property included within the tentative map shall be filed without first processing a new tentative map.
(Ord. 86-446-M §§ 1, 2, 1986; Ord. 84-446-L § 1, 1984; Ord. 82-466-I § 4, 1982: Ord. 74-446 Art. II § 29(B), 1974.)
17.20.030 - Boundary markings.¶
The boundary of the subdivision shall be designated by a colored line approximately one-eighth inch wide applied adjacent to the boundary line on the back side of the sheet. This shall cause a shaded line to appear on the prints in such a manner as not to obliterate figures or other data.
(Ord. 74-446 Art. II § 29(C), 1974.)
17.20.040 - Title sheet.¶
The title sheet shall contain the subdivision tract number, conspicuously placed on the sheet, and the location of the property being subdivided, with references to maps which have been previously recorded, or by reference to the plat of the United States Survey. A subdivision name may be added below the subdivision tract number. In case the property included with the subdivision lies wholly in unincorporated territory, the following words shall appear in the title: "In the County of Mono."
(Ord. 74-446 Art. II § 29(D), 1974.)
17.20.050 - Certificates—Map key and scale.¶
Affidavits, certificates, acknowledgments, endorsements, acceptances or dedications and the notarial seals required by law and this division shall appear only once on the title sheet. The above certificates, etc., shall be placed thereon with black India ink or by photographic reproduction. If more than three sheets are used for the map, a key diagram shall be included. In addition to those certificates prescribed by Section 66435 et seq. of the Government Code, certificates by the planning commission and the health officer shall be on
the map indicating their approval of the subdivision. The scale must appear on each sheet, except on a title sheet not containing a map. Minimum scales used on maps shall be as follows:
| Standard lot subdivisions | 1′′ = 50′ |
|---|---|
| Rural subdivision | 1′′ = 100′ |
| Planned unit development | 1′′ = 20′ |
or as approved by the county surveyor. The basis of bearing shall be approved by the county surveyor and shall be required on one sheet only. The map shall show the equation of bearing to the true north. All easements required to be dedicated shall have their particular use specified on the map. The subdivider shall provide the county surveyor with letters from all involved utilities stating that the easements as provided on the final map are satisfactory. Easements for an existing or proposed utility installation for the use of a private or nongovernmental agency shall not be shown on the map unless there is a recorded conveyance to such individual or corporation, except as provided by Section 17.20.060.
(Ord. 81-493 § 28, 1981; Ord. 74-446 Art. II § 29(E), 1974.)
17.20.060 - Previously undisclosed easements—Designations.¶
Easements not disclosed by the records in the office of the county recorder, and found by the surveyor or engineer to be existing in the subdivision prior to the date of filing for record of the subdivision map, shall be specifically designated on the map, naming the party or parties using the easement and describing the specific purpose for which the easement is being used.
(Ord. 74-446 Art. II § 29(F), 1974.)
17.20.070 - Previously existing easements—Designations.¶
Easements evidenced by the records in the office of the county recorder prior to the date of filing for record of the subdivision map shall be specifically designated thereon by the volume and page of the conveyance which established the easement, and the name of the grantee in the conveyance who or which reserved the easement.
(Ord. 74-446 Art. II § 29(G), 1974.)
17.20.080 - Easements—Side lines.¶
The side lines of all such record easements shall be shown by dashed lines on the final map with the width, lengths and bearings thereof, in figures if available from the records.
(Ord. 74-446 Art. II § 29(H), 1974.)
17.20.090 - Subdivision location information.¶
The map shall show the definite location of the subdivision and particularly its relation to surrounding subdivisions, surveys, public land surveys and, in addition, shall make reference to the recorder's book and
page of such subdivisions and surveys.
(Ord. 74-446 Art. II § 29(I), 1974.)
17.20.100 - County or city boundary designations.¶
City or county boundaries crossing or joining the subdivision shall be clearly designated and no lot shall be divided by such boundary.
(Ord. 74-446 Art. II § 29(J), 1974.)
17.20.110 - Monument designations.¶
The location and description of all existing and proposed monuments shall be shown and the relation of these monuments and the lines formed by these monuments to existing surveys shall be shown and noted.
(Ord. 74-446 Art. II § 29(K), 1974.)
17.20.120 - Street data.¶
The map shall show the centerline of each street, the boundary of each street, including the width of the portion of any fractional street being dedicated, the width of existing road rights-of-way when available from the public records, and the widths on each side of the centerline of whole streets. The widths and locations of adjacent streets shall be shown as determined from public records. Whenever the public works department or a city engineer has established either the centerline or monument line of the street and such information is made a public record, this location and data shall be shown on the final map.
(Ord. 74-446 Art. II § 29(L), 1974.)
17.20.130 - Interpretive data.¶
Sufficient linear, angular and radial data shall be shown to determine the bearings and lengths of the centerline of roads, the boundary lines of the subdivision and the boundary lines of every lot and parcel which is a part thereof. Other ties necessary for interpretation of the map and location of the points, lines and areas depicted will be shown.
(Ord. 74-446 Art. II § 29(M), 1974.)
17.20.140 - Survey procedures.¶
The survey to be used in preparation of the final map shall be made in a manner satisfactory to the department of public works, and all monuments shall be subject to the inspection and approval of the department of public works before approval of the final map.
A.
Markers and monuments shall be set as follows:
Along exterior boundaries at all angle points, the beginning and ending of curves, and at intervals not in excess of one thousand feet;
At the intersections of the centerlines of all streets, or on offsets properly tied into such intersections. These monuments shall be buried concrete with acceptable lamphold-type covers;
Angle points and the beginning and ending of all curves on the centerlines of all streets shall be marked by permanent monuments not less substantial than galvanized iron pipe five-eighths inch in diameter by twenty-four inches in length, or steel rods not less than one-half inch in diameter or concrete monuments six inches square or six inches in diameter at the top and twelve inches square or twelve inches in diameter at the base, not less than eighteen inches long and properly centered with lead plug and copper tacks, or other permanent metal markers, and buried not less than twelve inches below the finished grade of the street or the surface of the ground with eight inch spike at surface;
In case the streets are to be paved and sidewalks constructed, the angle points, beginning and ending of all curves and the centerline intersection of streets shall be marked with lead plugs and copper tacks on centerline in the pavement. All block corners shall be marked with lead plugs, and copper tacks in sidewalks at the intersection of two lines, each five feet from the property line, and parallel to the street right-of-way;
All street and alley corners shall be marked by permanent monuments not less substantial than galvanized iron pipe five-eighths inch in diameter by twenty-four inches in length driven flush with the ground.
All lot corners shall be marked by permanent monuments not less substantial than galvanized iron pipe five-eighths inch in diameter by twenty-four inches in length, or steel rods not less than one-half inch in diameter or concrete monuments six inches square or six inches in diameter at the top and twelve inches square or twelve inches in diameter at the base, not less than eighteen inches long and properly centered with lead plug and copper tacks, or other permanent metal markers not less than fourteen inches long, driven flush with the ground.
B.
The types of markers, the sizes used at the above locations, and ties, where necessary, shall all be clearly indicated on the final map.
C.
If any shortage or excess is found by the surveyor on the ground between existing monuments, compared with the original records, any division of the total must bear its proportion of such excess or shortage.
D.
For the subdivision of public lands or sections, property for the restoration of lost section corners, and for the retracement of section lines, the method to be followed shall be in accord with the instruction set forth in the "Manual of Instructions for the Survey of Public Lands of the United States," published by the Commissioner of the General Land Office, Department of the Interior, Washington, D.C.
(Ord. 80-488 § 3, 1980; Ord. 74-446 Art. II § 29(N), 1974.)
17.20.150 - Lots.¶
A.
Each lot or parcel being created shall be either numbered or lettered. If numbered, it must comply with the requirements of a building site as defined by the zoning code.
B.
Lettered lots or parcels may not be used as building sites and need not comply with the requirements for a building site.
C.
Lettered lots other than streets shall be labeled as to their intended use. Numbered lots may be labeled as to their intended use.
D.
Lot numbers or letters shall begin with the number (1), or the letter "A" which ever is applicable and continue consecutively with no omissions or duplications except that on multiple unit developments numbering or lettering of lots may begin where the numbering or lettering of a previous unit stopped. All figures shall be conspicuous and solid.
E.
Each lot or parcel must be shown in its entirety on one sheet of the map.
F.
No ditto marks shall be used in the dimension and data.
G.
For lots or parcels, the net acreage shall be shown to one hundredths of an acre. The area in the streets and the total area of the subdivision shall be shown. For lots zoned commercial, the net square footage shall be shown.
(Ord. 81-446-G § 1, 1981: Ord. 74-446 Art. II § 29(O), 1974.)
17.20.160 - Checking—Fees.¶
A.
The subdivider shall pay to the county fees for the surveyor's services in checking the final map based on the current fee schedule as established from time to time by resolution of the board of supervisors. All fees shall be paid prior to the time the map is set for approval by the commission. Said fee includes the cost of printing copies of the final map. After recording, one set of intermediates will be sent to the surveyor who prepared the map.
B.
Prior to the execution of the certificates on the original tracing, the subdivider shall submit two sets of prints of the map and certificate sheet to the county surveyor. The preliminary prints shall be accompanied by a preliminary title report of the property shown on the map and by traverse sheets prepared by the subdivider's engineer or surveyor showing by mathematical closures proof of the accuracy of all surveying information shown on the map. These shall be submitted on computer output sheets in a readily usable printed form. If computation sheets are not in an acceptable form, they shall be rejected and returned with the maps.
C.
The error of closure for a traverse of the boundaries of the tract blocks or lots shall be one in five thousand or less.
D.
Within twenty calendar days after submission of the required documents, the county surveyor shall approve the same or disapprove them and return to the subdivider for correction.
(Ord. 80-446-F § 1, 1980; Ord. 80-446-E § 2, 1980; Ord. 74-446 Art. II § 30, 1974.)
17.20.170 - Commission approval.¶
The final map shall be in substantial conformance with the tentative map and be accompanied by the following documents. All applicable items must be approved prior to review for approval by the planning director, and ratification of the decision of the planning director by the planning commission:
A.
The improvement plans, approved and signed by the director of public works;
B.
A subdivision agreement, approved by the county counsel, guaranteeing that the subdivider will complete the construction of improvements within a time period specified by the county and will make full payment therefor;
C.
Cash deposit or acceptable surety bond equivalent to the estimated cost of construction of all improvements, monuments, landscaping, guaranteeing performance of work, payment for labor and
materials, and any other claims that may arise as a result of the improvement work, as set forth in the subdivision agreement;
D.
Deeds for easements on right-of-way required for road, drainage or other purposes which have not been dedicated on the final map;
E.
Written evidence acceptable to the public works department in the form of right of entry or permanent easements across private property outside of the subdivision permitting or granting access to perform necessary construction work, permitting the maintenance of the facility and providing access to the subdivision;
F.
Agreements acceptable to the public works department, executed by the owners of existing utility easements within proposed road right-of-way, consenting to the joint use of the right-of-way as may be required by the county for the convenience and public use of the road;
G.
Two copies of fully executed CC&R's shall be approved in final form by county counsel;
H.
Deposit made with recorder for recording fees;
I.
Proof of payment from tax collector showing that all payable taxes have been paid, and a bond or cash deposit guaranteeing payment of taxes and assessments then a lien, but not yet payable, as required by the Subdivision Map Act;
J.
Cash payment or proof of payment for all checking and filing fees; inspection of construction; cash deposits as required by the fire districts or water company or districts having jurisdiction of fire hydrant rental fees, and other applicable fees or deposits; all approved by the county surveyor;
K.
Evidence of formation of legal entities when required to operate and perform all required maintenance and services.
When the final map conforms to the tentative map, local ordinances, the Subdivision Map Act, and is technically correct, the original tracing of the final map, signed by all parties required to execute the owner's certificate and surveyor's certificate on the map, shall be submitted to the county surveyor. The county surveyor shall present the final map to the planning director for approval or disapproval. If
disapproved, the county surveyor shall return the map to the subdivider with an explanation for its rejection. If approved by the planning director and ratified by the planning commission, the county surveyor shall forward such map to the board together with all required accompanying documents, recommending approval.
(Ord. 83-446-I § 1, 1983: Ord. 74-446 Art. II § 3, 1974.)
17.20.180 - Board approval.¶
A.
Within ten working days after the final map and all required supplementary documents have been received, the board shall consider the final map. The board shall accept or reject any or all offers of dedication.
B.
Upon approval of the final map by the board, the clerk of the board shall transmit the map, deeds and other necessary documents to the county recorder for recording.
C.
The subdivider shall also present to the recorder evidence that upon the date of recording, as shown by public record, the parties consenting to the recordation of the map are all of the parties having a record title interest in the land subdivided, whose signatures are required by the provisions of the Subdivision Map Act; otherwise, the map shall not be recorded.
(Ord. 74-446 Art. II § 32, 1974.)
17.20.190 - Approval by units.¶
A subdivider may elect to file a final map covering only a portion of the approved tentative map. This is allowable only if he declares such intention at the time he files the tentative map, or if the commission approves the phasing. Each such final map for a portion of the tentative map shall be given a suffix subdivision tract number. All of the requirements for approval of a full final map shall apply to approval for a partial final map, and the subdivision agreement required of the subdivider shall provide for the construction of such improvements as may be necessary to constitute a logical and orderly development by units of the whole subdivision.
(Ord. 74-446 Art. II § 33, 1974.)
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