1400 Montefino Project
Summary
SCH Number
2026030434
Lead Agency
City of Diamond Bar
Document Title
1400 Montefino Project
Document Type
MND - Mitigated Negative Declaration
Received
Present Land Use
The Project site’s existing General Plan designation is General Commercial and the zoning is Commercial Office (CO).
Document Description
The applicant requests approval to redevelop an approximately 3.9-acre site, located at 1400 Montefino Avenue, with a for-sale residential community of 49 dwelling units in a mix of detached and attached three-story condominiums within 28 residential buildings. The Project would demolish the existing office building and associated improvements and construct three new private drives, parking, landscaping, and utilities. Vehicular access would be provided by a single unsignalized driveway on Montefino Avenue (reconstructed to meet City standards). A total of 120 automobile parking spaces would be provided, including 98 spaces within private two-car garages and 22 uncovered guest spaces.
Contact Information
Name
Mayuko Nakajima
Agency Name
City of Diamond Bar
Job Title
Senior Planner
Contact Types
Lead/Public Agency
Phone
Name
Sarah Klaustermeier
Agency Name
Intracorp SoCal-1, LLC
Job Title
Senior Director - Development
Contact Types
Project Applicant
Phone
Name
Christine Abraham
Agency Name
De Novo Planning Group
Job Title
Principal Planner
Contact Types
Consulting Firm
Phone
Location
Coordinates
Cities
Diamond Bar
Counties
Los Angeles
Regions
Citywide
Cross Streets
Montefino Avenue and S. Diamond Bar Boulevard
Zip
91765
Total Acres
3.9
Parcel #
8293-044-015, 8293-044-016
State Highways
SR 60
Railways
n/a
Airports
n/a
Schools
Quail Summit ES, Chaparral MS, Maple Hill ES, Diamond Bar HS
Waterways
n/a
Notice of Completion
State Review Period Start
State Review Period End
State Reviewing Agencies
California Air Resources Board (ARB), California Department of Conservation (DOC), California Department of Fish and Wildlife, South Coast Region 5 (CDFW), California Department of Forestry and Fire Protection (CAL FIRE), California Department of Housing and Community Development (HCD), California Department of Parks and Recreation, California Department of Toxic Substances Control (DTSC), California Department of Transportation, District 7 (DOT), California Department of Water Resources (DWR), California Fish and Game Commission (CDFGC), California Governor's Office of Emergency Services (OES), California Highway Patrol (CHP), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California Regional Water Quality Control Board, Los Angeles Region 4 (RWQCB), California State Coastal Conservancy (SCC), Colorado River Board, Office of Historic Preservation, San Gabriel and Lower Los Angeles Rivers and Mountains Conservancy (RMC), State Water Resources Control Board, Division of Drinking Water, State Water Resources Control Board, Division of Drinking Water, District 15, State Water Resources Control Board, Division of Drinking Water, District 16, State Water Resources Control Board, Division of Drinking Water, District 22, State Water Resources Control Board, Division of Drinking Water, District 7, State Water Resources Control Board, Division of Water Quality, State Water Resources Control Board, Divison of Financial Assistance
Development Types
Residential (Units 49, Acres 3.9)
Local Actions
General Plan Amendment, Rezone, Use Permit, Redevelopment, Development Review
Project Issues
Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Cultural Resources, Cumulative Effects, Drainage/Absorption, Energy, Flood Plain/Flooding, Geology/Soils, Greenhouse Gas Emissions, Growth Inducement, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Mandatory Findings of Significance, Mineral Resources, Noise, Population/Housing, Public Services, Recreation, Schools/Universities, Septic System, Sewer Capacity, Solid Waste, Transportation, Tribal Cultural Resources, Utilities/Service Systems, Vegetation, Wetland/Riparian, Wildfire
Public Review Period Start
Public Review Period End
Attachments
Draft Environmental Document [Draft IS, NOI_NOA_Public notices, OPR Summary Form, Appx,]
Notice of Completion [NOC] Transmittal form
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