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Earlier editions: 2026-09

Zoning›ZONING ORDINANCE›Division 9 — PLANNING AREAS

Irvine Municipal Code Ch. 9-21 Planning Area 21 (turtle Rock)

Irvine Municipal Code · 2026-10 edition · updated 2026-10-04 · Irvine

Cite as: Irvine Municipal Code Chapter 9-21 · Text as of 2026-10-04

Sec. 9-21-1. - Land use zoning map.

(See Planning Area 21 map following Section 9-21-5.)

(Code 1976, § V.E-821.1; Ord. No. 92-3, 4-14-92; Ord. No. 92-4, § 3, 4-28-92; Ord. No. 94-7, § 3, 6-14-94; Ord. No. 95-4, 5-9-95; Ord. No. 95-22, § 3, 11-28-95; Ord. No. 97-05, 5-13-97)

Exceptions & meaning →

Sec. 9-21-2. - Introduction.

Planning Area 21, Turtle Rock, is located in the southern area of the City. Boundaries include University Drive and Culver Drive to the west, University Drive and Ridgeline Drive to the north, Planning Area 22 to the east and Bonita Canyon Road to the south.

(Code 1976, § V.E-821.2; Ord. No. 92-3, 4-14-92; Ord. No. 92-4, § 3, 4-28-92; Ord. No. 94-7, § 3, 6-14-94; Ord. No. 95-4, 5-9-95; Ord. No. 95-22, § 3, 11-28-95)

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Sec. 9-21-3. - Statistical analysis.

Building Intensity Standard
General Plan Category Zoning Number Zoning District Maximum Regulatory Dwelling Units Additive Dwelling Units 2 Maximum Regulatory Square Feet Additive Square Feet 2
Conservation and Open Space:
Recreation 1.5 Recreation 0 0 0 19,746
Water Bodies 1.6 Water Bodies 0 0 0 0
Residential:
Low Density 2.2 Low Density 3,083 0 0 0
Low Density 2.3 Medium Density 44 0 0 0
Medium Density 2.3 Medium Density 77 0 0 0
Medium-High Density 2.3 Medium Density 248 0 0 0
Medium-High Density 2.4 Medium-High Density 470 0 0 0
Institutional:
Educational Facilities 6.1 Institutional 0 0 227,941 119,669
Educational Facilities 6.1 Institutional 330 0 310,980 10,240
Public Facilities 2.3 Medium Density 0 0 30,000 0
Unallocated Dwelling Units 1 n/a n/a 1 0 0 0
PLANNING AREA TOTAL PLANNING AREA TOTAL PLANNING AREA TOTAL 4,253 0 568,921 149,655

1 Unallocated dwelling units represent those units remaining in a planning area that may be built anywhere in the same planning area. These units are within the maximum development intensity for the planning area; and, therefore, placement of unallocated dwelling units into any residential category within the planning area for purposes of development is determined to be consistent with the General Plan and Zoning Code with regard to intensity allocation only, provided that placement is otherwise consistent with site specific zoning regulations and that any potential environmental impacts are adequately addressed, including traffic impacts, pursuant to CEQA.

2 See Section 9-0-3.C, Building Intensity Standards.

(Code 1976, § V.E-821.3; Ord. No. 92-3, 4-14-92; Ord. No. 92-4, § 3, 4-28-92; Ord. No. 94-7, § 3, 6-14-94; Ord. No. 95-4, 5-9-95; Ord. No. 95-22, § 3, 11-28-95; Ord. No. 10-04, § 3, 4-13-10; Ord. No. 12-09, § 3(Exh. A), 5-22-12; Ord. No. 17-05, § 6(Exh. A), 5-9-17)

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Sec. 9-21-4. - Land use regulations.

See Section 3-3-1 (Land use matrix).

(Code 1976, § V.E-821.4; Ord. No. 92-3, 4-14-92; Ord. No. 92-4, § 3, 4-28-92; Ord. No. 94-7, § 3, 6-14-94; Ord. No. 95-4, 5-9-95; Ord. No. 95-22, § 3, 11-28-95)

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Sec. 9-21-5. - Development standards.

See Chapter 3-37 (Development Standards).

(Code 1976, § V.E-821.5; Ord. No. 92-3, 4-14-92; Ord. No. 92-4, § 3, 4-28-92; Ord. No. 94-7, § 3, 6-14-94; Ord. No. 95-4, 5-9-95; Ord. No. 95-22, § 3, 11-28-95)

[Figure]

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Sec. 9-21-6. - Reserved.

Sec. 9-21-7. - Special development requirements.

A. General.

  1. See Division 3 for applicable general development requirements.

  2. All development within this planning area shall be in accordance with the Hillside Overlay District and any other hillside regulations in effect at the time of tentative map approval.

  3. Prior to the issuance of building permits for 4,000 total dwelling units in this planning area, the City Council shall determine whether a fourth permanent access is needed after reviewing the recommendation of the Director of Public Works. The Director of Public Works shall base the recommendation on annual analysis of the existing and projected traffic conditions.

  4. All areas designated for residential use may be developed at a lower density than that indicated without requiring a zone change.

B. Special development requirements: Concordia University (former Christ College Irvine) General Plan Amendment 4237-GA/Zone Change 5232-ZC and Campus Build-Out Plan 00612052-PCPU/Zone Change 00629029-PZC.

Concordia East and West Residential and Concordia University:

  1. The open space areas around the edges of the project as depicted on Drawing 1, Constraints Summary Map (EIR 4237-GA, Appendix K: Graphics Appendix) shall be defined as lettered lots in any tentative and final maps, other than maps for financing and conveyance only. The lettered lots shall be restricted as follows:

a. With the exception of the Keck Astronomy Center (approximately 500 square feet), no development of any type shall be permitted.

b. With the exception of the Keck Astronomy Center (approximately 500 square feet), no grading within the open space area except remedial grading as permitted by staff on a case-by-case basis in the specific remedial areas shown in Drawing 15 (Appendix K of the EIR), Concordia East residential (former Hillcrest Vista) Conceptual Grading Plan.

c. The open space area separating the Concordia West residential (former Chapel Hill Vista) development from the existing Vista homes shall be planted as a landscape buffer in accordance with Drawing 11, Conceptual Landscape Plan for Chapel Hill Vista (Appendix K).

d. These restrictions shall not preclude implementation of any fuel modification requirements placed upon the project by the Orange County Fire Authority, if such requirements do not interfere with the primary purpose of either the landscape buffer, or open space corridor, as determined by the Director of Community Development.

e. Provide for a minimum 70-foot unfenced open space corridor between French Hill and Mason Regional Park.

  1. Prior to issuance of grading permits, the applicant shall submit for review and comment, to OC Parks, precise grading plans and sections relative to any infringement within park boundaries, and precise plans for drainage entering or affecting Mason Regional Park.

  2. Prior to issuance of any grading permits, the applicant shall submit for review and approval by the Chief Building Official a construction traffic routing plan which routes construction traffic away from residential areas. The routing plan shall be shown as a map on the grading and building plans and shall specify that construction traffic is to be routed to Ridgeline Drive, to University Avenue, and directly to the I-405 freeway.

  3. Prior to the issuance of building permits for residential uses, each applicant shall demonstrate that all rooftop mechanical and electrical equipment is screened from upper elevation vantage points or integrated into the building design, and that all plumbing vents and ducts are grouped together in order to minimize roof penetration.

  4. Where feasible (i.e., where reclaimed water line hookups are available), all landscaped common areas shall use reclaimed water when permanent irrigation is required and the supply of recycled water is adequate.

  5. Acceptance and maintenance of all surface and subdrainage facilities for the Concordia West (former Chapel Hill Vista), Concordia East (former Hillcrest Vista) and Concordia University (former Christ College) campus, including the on-site perimeter drainage facilities for Concordia West, as described in the Law Environmental hydrogeologic evaluation dated January 24, 1992, shall be the responsibility of the landowner and/or homeowners association. No future dedication of these facilities will be accepted by the City of Irvine.

  6. a.

In conjunction with submittal of swimming pool or spa plans, the applicant shall submit a soil report prepared and signed by a licensed civil and/or geotechnical engineer. The report shall include, but not be limited to, the following information:

(1) A plot showing the location of all test borings and/or excavations.

(2) Descriptions and classifications of the materials/soils encountered.

(3) Elevation of the water table, if encountered.

(4) Recommendations for foundation type and design criteria, including bearing capacity, provisions to minimize the effects of expansive soils, and the effects of adjacent loads.

(5) Expected total differential settlement.

b. Exception: The City Building Official may waive the requirement for submission of a soil report if the following conditions are met:

(1) A hydrostatic valve is installed in the pool to relieve hydrostatic pressure.

(2) The pool is designed to accommodate the effects of expansive soils.

Concordia East and West Residential:

  1. A landscape treatment shall be required for those facing either adjacent Enclave I (Vistas), Ridgeline Drive or Turtle Rock Drive which incorporates plant materials at the top of slopes at the intersection of rear and side property lines of heights sufficient to provide a visual break to continuous lot elevations.

  2. In conjunction with submittal of any discretionary development application covering Concordia West (former Chapel Hill Vista), and/or Concordia East (former Hillcrest Vista), the applicant shall submit an adequate hydrology study of the area covered by the development application. The study shall substantiate the downstream drainage facilities to determine the adequacy and ownership to handle the proposed increase in runoff anticipated by such development.

Concordia East Residential:

  1. Any future conditional use permit/master plan for Concordia East residential (former Hillcrest Vista) shall include provision for fencing which prohibits access to the open space area along Ridgeline Drive.

Concordia West Residential:

  1. All homes built within Concordia West (former Chapel Hill Vista) will contain roof gutters, and said gutters will be connected to nonerosive devices as provided for in the Law Environmental report.

(Code 1976, § V.E-821.6; Ord. No. 92-3, 4-14-92; Ord. No. 92-4, § 3, 4-28-92; Ord. No. 94-7, § 3, 6-14-94; Ord. No. 95-4, 5-9-95; Ord. No. 95-22, § 3, 11-28-95; Ord. No. 09-02, § 3, 3-24-09; Ord. No. 17-05, § 6(Exh. A), 5-9-17)

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