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10-1.806 Improvement Plans.

Walnut Creek Zoning Code · 2026-06 edition · updated 2026-07-07 · Walnut Creek

  1. General. Improvement plans shall be prepared under the direction of and signed by a registered civil engineer licensed by the State of California. Improvement plans shall be processed according to the time limits set in Section 66456.2 of the Subdivision Map Act.

Improvement plans shall include, but not be limited to, grading, storm drains, landscaping, streets and related facilities.

  1. Form. Plans, profiles and details shall be legibly drawn, printed or reproduced on 24" x 36" sheets. A border shall be made on each sheet providing 1/2" at top, bottom and right side and 1-1/2" on the left side.

A suitable title block shall be placed in the lower right corner or along the right edge and provide adequate space for approval by the City Engineer and for approval of plan revisions.

Plan and profiles shall be drawn to the scale of 1" = 40' or larger unless approved by the City Engineer. Details shall be drawn to such scale that clearly shows the facility being constructed. The scales for various portions of the plans shall be shown on each sheet.

A vicinity map shall be shown on the first sheet of all sets of plans.

A north arrow shall be shown on each sheet when applicable.

Plans shall be laid out to orient north to the top or left edge of the sheet unless approved otherwise by the City Engineer.

All lettering shall be 1/8" minimum or typed print of legible size.

If the plans include three or more sheets, a cover sheet showing the streets, lots, easements, storm drains, index and vicinity map shall be included.

The form of all plans shall conform to additional requirements as may be established by the City Engineer. The final form of all plans shall be approved by the City Engineer.

  1. Contents. The improvement plans shall show complete plans, profiles and details for all required improvements to be constructed, both public and private, including common areas.

Reference may be made to City of Walnut Creek, Contra Costa County or State Standard Plans in lieu of duplicating the drawings.

  1. Supplementary Plans and Calculations. Hydrology, hydraulic plans and calculations, bond estimates, and any structural calculations as may be required, shall be submitted with the improvement plans to the City Engineer. All calculations shall be legible, systematic and signed and dated by a registered civil engineer licensed by the State of California and in a form approved by the City Engineer.

  2. Review by the City Engineer. The subdivider shall submit the improvement plans and all computations to the City Engineer for review. Upon completion of the review, one set of the preliminary plans, with the required revisions indicated, will be returned to the subdivider's engineer.

  3. Approval by the City Engineer. After completing all required revisions, the subdivider's engineer shall transmit the originals of the improvement plans to the City Engineer for signature.

Upon finding that all required revisions have been made and that the plans conform to all applicable City ordinances, design review requirements and conditions of approval of the tentative map, the City Engineer shall sign and date the plans. The originals will be returned to the subdivider's engineer.

Approval of the improvement plans shall not be construed as approval of the sanitary sewer, water, or gas and electric construction plans.

Approval by the City Engineer shall in no way relieve the subdivider or the subdivider's engineer from responsibility for the design of the improvements and for any deficiencies resulting from the design thereof or from any required conditions of approval for the tentative map.

7. Revisions to Approved Plans.

a. By Subdivider. Requests by the subdivider or the engineer for revisions to the approved plans appearing necessary or desirable during construction shall be submitted in writing to the City Engineer or authorized representative and shall be accompanied by revised drawings showing the proposed revision. If the revision is acceptable, the originals shall be submitted to the City Engineer's office for initialing. The originals shall be returned to the subdivider's engineer and prints of the revised plans shall be immediately transmitted to the City Engineer. Construction of any proposed revision will not be permitted to commence until prints of the revised plans have been received and forwarded to the City's Engineering Inspection Division.

b. By City Engineer. When revisions are deemed necessary by the City Engineer to protect public health and safety, or as field conditions may require, a request in writing shall be made to the subdivider and engineer. The subdivider's engineer shall revise the plans and transmit the originals to the City Engineer for initialing within the time specified by the City Engineer. Upon receipt of the initialed originals, the subdivider's engineer shall immediately transmit prints of the revised drawings to the City Engineer. Construction of all or any portion of the improvements may be stopped by the City Engineer until prints of the revised drawings have been submitted.

The subdivider may appeal revisions required by the City Engineer to the City Council by filing an appeal with the City Clerk within two working days following receipt of the request to revise the plans.

c. Plan Checking and Inspection Costs for Revisions. Costs incurred by the City for the checking of plans or calculations or inspection as a result of revisions to the approved plans shall be borne by the subdivider at actual cost. A deposit, when required, shall be submitted with the revised prints and applied toward the actual costs.

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▸ Contents — Walnut Creek Zoning Code
Walnut Creek Zoning Code
  1. 10-1.101 Citation and Authority.
  2. 10-1.102 Purpose.
  3. 10-1.103 Conformity to General Plan, Specific Plans and Zoning…
  4. 10-1.104 Application.
  5. 10-1.105 Modification of Requirements.
  6. 10-1.201 Definitions.
  7. 10-1.202 Responsibilities.
  8. 10-1.301 General.
  9. 10-1.302 Division of Land—Five or More Parcels.
  10. 10-1.303 Division of Land—Four or Fewer Parcels. (Minor Subdiv…
  11. 10-1.304 Plat Maps.
  12. 10-1.305 Fees and Deposits.
  13. 10-1.402 Tentative Maps.
  14. 10-1.403 Final Maps.
  15. 10-1.501 Tentative Parcel Map.
  16. 10-1.502 Parcel Maps.
  17. 10-1.503 Waiver of Parcel Map Requirements.
  18. 10-1.601 Dedication of Streets, Alleys and Other Public Rights…
  19. 10-1.602 Park Land Dedication.
  20. 10-1.603 School Site Dedication.
  21. 10-1.604 Reservations.
  22. 10-1.605 Claims of Excessive Dedications.
  23. 10-1.701 Purpose.
  24. 10-1.702 Requirements and Procedures.
  25. 10-1.703 Physical Standards for Condominium Conversions.
  26. 10-1.704 Tenant Provisions.
  27. 10-1.705 Effect of Proposed Conversion on the City's Low- and …
  28. 10-1.706 Findings.
  29. 10-1.801 General.
  30. 10-1.802 Improvements Required.
  31. 10-1.803 Deferred Improvement Agreements.
  32. 10-1.804 Design.
  33. 10-1.805 Access.
  34. 10-1.806 Improvement Plans.
  35. 10-1.807 Improvement Agreement.
  36. 10-1.808 Improvement Security.
  37. 10-1.809 Construction.
  38. 10-1.810 Construction Inspection.
  39. 10-1.811 Completion of Improvements.
  40. 10-1.812 Acceptance of Improvements.
  41. 10-1.813 Supplemental Improvement Capacity.
  42. 10-1.901 General.
  43. 10-1.902 Initiation of Proceedings.
  44. 10-1.903 Contents of Petition.
  45. 10-1.904 Submittal of Petition to City Engineer.
  46. 10-1.905 City Council Approval.
  47. 10-1.906 Filing with County Recorder.
  48. 10-1.1001 Mergers not Required.
  49. 10-1.1002 Mergers Required.
  50. 10-1.1003 Notice of Intention to Determine Status.
  51. 10-1.1004 Hearing on Determination of Status.
  52. 10-1.1005 Determination of Merger.
  53. 10-1.1006 Determination When No Hearing is Requested.
  54. 10-1.1007 Request to Merge by Property Owner.
  55. 10-1.1008 Unmerged Parcels.
  56. 10-1.1009 Request for Determination by Owner.
  57. 10-1.1010 Fee for Mergers and Unmergers.
  58. 10-1.1101 Requirements.
  59. 10-1.1102 Form and Contents.
  60. 10-1.1103 Submittal and Approval by the City Engineer.
  61. 10-1.1104 Filing with the County Recorder.
  62. 10-1.1105 Fee.
  63. 10-1.1201 Citation and Authority.
  64. 10-1.1202 Purpose and Intent.
  65. 10-1.1203 Consistency.
  66. 10-1.1204 Definitions.
  67. 10-1.1205 Application.
  68. 10-1.1206 Filing and Processing.
  69. 10-1.1207 Expiration.
  70. 10-1.1208 Vesting on Approval of Vesting Tentative Map.
  71. 10-1.1209 Development Inconsistent with Zoning—Conditional App…
  72. 10-1.1210 Applications Inconsistent with Current Policies.
  73. 10-1.1211 Failure to Obtain Design Review Approval.
  74. 10-1.1301 Prohibition.
  75. 10-1.1302 Remedies.
  76. 10-1.1303 Certificate of Compliance.
  77. 10-1.1304 Notice of Violation.
  78. 10-1.1305 Penalties.
  79. 10-1.1306 Judicial Action.
  80. 10-1.1401 Purpose.
  81. 10-1.1402 Applicability—Ministerial Approval.
  82. 10-1.1403 Exceptions.
  83. 10-1.1404 Definitions.
  84. 10-1.1405 Urban Lot Split Requirements.
  85. Chapter 2
  86. Part I — GENERAL PROVISIONS
  87. Part II — BASE DISTRICT REGULATIONS
  88. Part III — REGULATIONS APPLYING IN ALL OR SEVERAL DISTRICTS Re…
  89. Part IV — ADMINISTRATION

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