Complete Guide to Using ZIMAS in Los Angeles

The Zoning Information and Map Access System (ZIMAS) is a powerful online tool developed by the Los Angeles City Planning Department. It helps property owners, developers, and consultants find detailed zoning and planning data for any parcel within Los Angeles city limits. Whether you’re planning a remodel, building an ADU, or researching a site for development, ZIMAS is your starting point.

This guide will walk you through how to use ZIMAS, interpret its data, and apply it to your real estate or planning project. It also includes tips for avoiding common pitfalls and explains how professionals like JDJ Consulting use ZIMAS as part of broader zoning and permitting strategies.

What Is ZIMAS and Why It Matters

ZIMAS (https://zimas.lacity.org/) is the City of Los Angeles’ official mapping platform. It provides detailed parcel-specific information about:

• Zoning and land use
• Historic and cultural status
• Building permits
• Fire zones and environmental overlays
• Transit, density bonuses, and incentives

ZIMAS aggregates data from Planning, LADBS, LAFD, and other city departments, making it a one-stop shop for:

• Confirming what can legally be built
• Checking for project restrictions
• Researching eligibility for housing density bonuses or ADUs
• Avoiding violations, delays, and redesigns

Step-by-Step: How to Use ZIMAS

1. Go to https://zimas.lacity.org

2. Enter Property Information

• Use the address, Assessor Parcel Number (APN), or cross streets
• Zoom in and click on the parcel

3. Navigate the Tabs

Each tab provides different types of data:

• Planning and Zoning: Zones, Height District, Community Plan Area
• Administrative: Council District, Neighborhood Council, Design Review Board
• Assessor: Parcel size, APN, Year built
• Jurisdictional: School District, Census Tract
• Recorded: Easements, Historic Resources
• Additional: Liquor License, Wireless Facilities

Watch complete tutorial here: How to Use ZIMAS by Official Website of City of Los Angeles

Key Sections to Focus On

Planning and Zoning Tab

• Zone Code: Tells you what land uses are allowed (R1, R2, C2, etc.)
• Height District: Limits on structure height and FAR (floor area ratio)
• Community Plan Area: Indicates broader planning goals
• Specific Plan Overlay: May impose additional restrictions

Additional Tab

• Transit Oriented Communities (TOC) eligibility
• Historic Preservation Overlay Zones (HPOZ)
• Very High Fire Hazard Severity Zones (VHFHSZ)
• Alquist-Priolo Fault Zones

These layers can affect construction methods, environmental review, and permit timelines.

What ZIMAS Can Help You Discover

Development Potential

• Can I build a duplex or fourplex?
• Can I add an ADU or SB9 unit?
• Is my property eligible for density bonuses?

Environmental and Safety Overlays

• Is the site in a hillside area?
• Does it lie in a fire or seismic zone?
• Are brush clearance rules required?

Permitting and Process

• Is the parcel under a Specific Plan or HPOZ?
• Does it require CEQA review or discretionary approval?

ZIMAS Use Cases for Property Owners and Professionals

Common Pitfalls to Avoid

• Assuming zoning alone tells the whole story: Always check overlays, TOC, and special plans
• Using outdated data: Recheck ZIMAS before starting any new phase
• Overlooking CEQA triggers: Check environmental flags and LADBS requirements
• Misreading zoning labels: R1, R2, C1 zones vary by district

JDJ Consulting Relies on ZIMAS

JDJ Consulting uses ZIMAS as a baseline for all feasibility studies. Their team goes further by:

• Verifying on-the-ground site conditions
• Running entitlement and permitting pathways
• Preparing zoning summary reports
• Coordinating with Planning and LADBS staff for interpretations

For high-risk or complex zones (fire zones, slope band analysis areas, hillside ordinances), JDJ builds ZIMAS data into project timelines and compliance workflows.

Final Tips

• Cross-reference ZIMAS with LADBS Permit and Parcel viewers
• Use the export map tool for project documentation
• Always consult a zoning expert for projects over 500 sq ft or near overlays

Need Help Understanding ZIMAS and Zoning Laws

Frequently Asked Questions

How accurate is ZIMAS?

ZIMAS pulls data directly from city databases and is generally reliable. However, updates to zoning maps, parcel lines, and overlays may take time to reflect. If your project involves property line adjustments, zoning variances, or hillside grading, verify critical data with LADBS or City Planning.

• For precise parcel dimensions, request a survey.
• When in doubt, request a Planning Zoning Determination Letter.
• Remember: ZIMAS is a tool, not a legal entitlement.

Can ZIMAS show if I can build an ADU?

Yes. ZIMAS can help you determine zoning type, hillside ordinance applicability, and whether your parcel falls within a VHFHSZ (Very High Fire Hazard Severity Zone). These factors are key to ADU approval. However:

• Additional rules apply if your parcel is in a Specific Plan or HPOZ.
• Parking exemptions depend on proximity to transit (check TOC eligibility).
• Use the Additional and Planning tabs together for complete analysis.

Is ZIMAS free to use?

Yes, ZIMAS is a free, public-facing tool provided by Los Angeles City Planning. It requires no login and is accessible via desktop and mobile. Still:

• It does not provide building permit history (use LADBS Permit Viewer).
• It does not submit or process zoning requests—you’ll need Planning or JDJ’s help for that.

Can I use ZIMAS for commercial development?

Absolutely. ZIMAS supports all property types, including C1, C2, CM, and manufacturing zones. For commercial development:

• Check zoning use tables and floor area ratio (FAR).
• Investigate any specific plan restrictions or design overlays.
• Use “Additional” tab to flag liquor licenses, wireless facilities, or environmental overlays.

Does ZIMAS replace a zoning consultant?

No. ZIMAS helps with research and due diligence, but it doesn’t:

• Offer entitlement strategy
• Represent you in front of city commissions
• Provide site plan reviews, CEQA guidance, or variance support

For that, zoning consultants like JDJ Consulting are essential.

What if my parcel shows conflicting data?

Sometimes, parcels may lie on zoning borders or have overlay inconsistencies. If ZIMAS results seem unclear:

• Check the official Zoning Map Index
• Consult a city planner via Planning Counter appointments
• Request a JDJ zoning report for professional analysis

Can ZIMAS help with SB 9 lot splits or duplexes?

ZIMAS helps identify base zoning and environmental overlays, both of which influence SB 9 eligibility. However, you’ll still need to:

• Verify lot size and frontage
• Review public infrastructure availability
• Check with Building & Safety on parcel feasibility

Can I download or print my ZIMAS findings?

Yes. ZIMAS allows users to export parcel maps and generate PDF reports. These are helpful for:

• Permit submittals
• Project presentations
• Consultant briefings

For more robust documents, use JDJ’s zoning reports, which include legal context and next-step recommendations.