Imperial County, CA - 2026 Building Permit Guide

Permit Authority

Unincorporated areas of Imperial County rely on Imperial County Planning & Development Services; the County states its Planning Division enforces Title 9 and state law in the unincorporated areas, and its Building division enforces state building codes and local ordinances.

Department

Imperial County Planning & Development Services Department, Division of Building & Safety

Address

801 Main Street, El Centro, CA 92243

Phone

(442) 265-1736

Email

buildinginfo@co.imperial.ca.us

Website

https://www.icpds.com/building

Application Process

1. Confirm the parcel is in unincorporated Imperial County and verify zoning and site constraints with County Planning resources before applying.
2. Download the County building application and required companion forms, including the site plan form, property owner acknowledgment, and either contractor workers' compensation information or owner-builder verification.
3. Prepare a complete submittal package with a signed application, complete site plan, two plan sets, property owner acknowledgment, owner-builder or workers' compensation documents, and the required deposit or fee payable to the County of Imperial.
4. Include project-specific approvals if applicable, such as zoning approval, Public Works encroachment or driveway permits, Environmental Health septic review, Fire Department water-supply review where hydrants are unavailable, school fee certification, IID water-service documentation, and Salton City or Desert Shores architectural review.
5. Submit the package to Imperial County Planning & Development Services. General permit materials are oriented around counter or mail submission, and the County also accepts electronic intake for certain expedited permit programs.
6. Respond to plan-check corrections or outside-agency comments if requested.
7. After approval, obtain permit issuance, keep the permit package on site, and schedule inspections by phone before required inspection points.

Typical processing time: Minimum 2 weeks, with additional time possible for corrections and interagency review.

Source: Imperial County Planning & Development Services Department, Division of Building & Safety

General Requirements

The County states building permits are required for new construction, alterations, or additions to a building or structure, including building, electrical, mechanical, plumbing, grading, demolition, and mobile-home-related work; by state law, virtually all construction including minor modifications requires some permit type.

Required Documents

• Signed permit application
• Complete site plan
• 2 copies of details and plans
• Property owner acknowledgment
• Contractor workers' compensation or owner-builder forms
• Deposit or fee
• Project-specific approvals such as Title 24 energy documents, school fee certification, zoning approval, septic review, public works review, fire review, potable water agreement, IID water form, and other agency clearances when applicable

Permit validity

County Title 9, Division 10 says permits expire if work does not start within 180 days of issuance or if work is suspended or abandoned for 180 days after starting; no permit may remain active more than 36 consecutive months. Renewal of an expired permit is generally one-half of the original total fee if the lapse has not exceeded one year and plans are unchanged.

Building code

The County's current building standards page links to the 2022 California Building Codes. County Title 9, Division 10 also contains local adoption and modification language for the California codes.

Owner-builder

The County requires owner-builder verification forms. County guidance says owner-builder status means the owner is doing the work personally, with limited ability to subcontract; if the County discovers other people working under an improper owner-builder permit, it may revoke the permit and require a new permit at double fee. The owner-builder packet also warns about workers' compensation and contractor-license compliance.

Contractor requirements

County guidance says contractors must be licensed in California, must sign the application, and must have workers' compensation when required.

Fees

Minimum permit fee

No single countywide minimum for all building permits is published. For standalone mechanical, plumbing, and electrical permits, the fee schedule shows an MP&E permit and inspection administrative base fee of $297.56 and an MP&E plan-check administrative base fee of $353.63. Other permit types use flat fees or size- and use-based schedules.

Plan check fee

Varies by permit type. The fee schedule publishes a $353.63 MP&E plan-check administrative base fee, plus additional type-specific or hourly plan-review charges where applicable.

Permit fee formula

Mixed. The County uses flat fees for many permit categories and size- and use-based schedules for new construction and other listed work types; staff also notes other fees may apply.

Reinspection fee

Reinspection fees are assessed hourly under the fee schedule and County code allows reinspection fees when work is not ready or corrections are not made.

Penalty (no permit)

Work started without a permit is subject to double permit fees under County ordinance and the fee schedule lists penalty and work-commenced-without-permit charges as double fee.

Payment note

The County requires a deposit with each application submittal. Accepted payment types include check, debit card, credit card, and money order; debit and credit card payments incur a 2.39% service fee. General application instructions also note fees are often estimated at submittal and finalized during plan check.

Fees change. Verify current amounts at the official fee schedule.

Work That Does NOT Require a Permit

• Stopping leaks in drains, soil, waste, or vent piping, so long as defective piping is not removed and replaced with new material
• Clearing stoppages, including removing and reinstalling water closets
• Repairing leaks in pipes, valves, or fixtures when the work does not require replacement or rearrangement of valves, pipes, or fixtures
• Portable motors or portable appliances connected by approved cord and plug
• Repair or replacement of fixed motors, transformers, or approved appliances of the same type and rating in the same location
• Temporary decorative lighting
• Repair or replacement of current-carrying parts of switches, contactors, or control devices
• Reinstallation of attachment-plug receptacles, but not the outlets for them
• Repair or replacement of overcurrent devices of the required capacity in the same location
• Taping joints, removal of wiring, certain temporary experimental or stage-set wiring, and low-voltage work under 25 volts and 50 watts, plus Class II and III low-energy control and signal circuits
• Minor electrical repair work such as repairing flush and snap switches, replacing fuses, changing lamp sockets and receptacles, taping bare joints, and repairing drop cords
• Electrical work performed by a public or private utility in providing utility service, plus certain IID structures used exclusively for power or water distribution with none or limited human occupancy

Important: County ordinance says permit exemptions do not authorize work that violates the code or other laws or ordinances. The County's public guidance also says virtually all construction requires permits of one type or another, so applicants should verify whether zoning, floodplain, fire, septic, encroachment, or other approvals still apply even if a narrow trade-code exemption exists.

Inspections

How to Schedule

• (442) 265-1736, press 1 or extension 1744 (phone)

Scheduling deadline

Inspection requests must be called in before 4:00 PM on the business day before the inspection is needed.

Inspection hours

If a specific time is absolutely necessary, call between 7:30 AM and 8:30 AM on the day of inspection to speak with the inspector.

Typical inspection sequence: The County does not publish a single universal sequence on the general inspections page; sequence depends on permit type and scope. Applicants are expected to request required inspections at the applicable stages and keep work accessible until approved.

Additional Resources

• Building code: The County's current building standards page links to the 2022 California Building Codes. County Title 9, Division 10 also contains local adoption and modification language for the California codes.
• Zoning information: View zoning info
• Check Your Zoning
• Forms
• Requirements
• Fees
• Inspections
• Current Code Standards
• County Building and Grading Ordinance
• License lookup guide: California Contractor License Requirements
• Contract template: California Homeowner-Contractor Agreement
• California hub: California Contractor License & Permit Hub

Frequently Asked Questions

Imperial County Building Permit FAQ

Do I need a building permit in unincorporated Imperial County, CA?

The County states building permits are required for new construction, alterations, or additions to a building or structure, including building, electrical, mechanical, plumbing, grading, demolition, and mobile-home-related work; by state law, virtually all construction including minor modifications requires some permit type.

How much does a building permit cost in unincorporated Imperial County, CA?

The minimum permit fee is No single countywide minimum for all building permits is published. For standalone mechanical, plumbing, and electrical permits, the fee schedule shows an MP&E permit and inspection administrative base fee of $297.56 and an MP&E plan-check administrative base fee of $353.63. Other permit types use flat fees or size- and use-based schedules.. Fees are calculated as: Mixed. The County uses flat fees for many permit categories and size- and use-based schedules for new construction and other listed work types; staff also notes other fees may apply.. Plan check fee: Varies by permit type. The fee schedule publishes a $353.63 MP&E plan-check administrative base fee, plus additional type-specific or hourly plan-review charges where applicable..

How do I apply for a building permit in unincorporated Imperial County, CA?

1. Confirm the parcel is in unincorporated Imperial County and verify zoning and site constraints with County Planning resources before applying. 2. Download the County building application and required companion forms, including the site plan form, property owner acknowledgment, and either contractor workers' compensation information or owner-builder verification. 3. Prepare a complete submittal package with a signed application, complete site plan, two plan sets, property owner acknowledgment, owner-builder or workers' compensation documents, and the required deposit or fee payable to the County of Imperial. 4. Include project-specific approvals if applicable, such as zoning approval, Public Works encroachment or driveway permits, Environmental Health septic review, Fire Department water-supply review where hydrants are unavailable, school fee certification, IID water-service documentation, and Salton City or Desert Shores architectural review. 5. Submit the package to Imperial County Planning & Development Services. General permit materials are oriented around counter or mail submission, and the County also accepts electronic intake for certain expedited permit programs. 6. Respond to plan-check corrections or outside-agency comments if requested. 7. After approval, obtain permit issuance, keep the permit package on site, and schedule inspections by phone before required inspection points.

How long does it take to get a building permit in unincorporated Imperial County, CA?

Typical processing time is Minimum 2 weeks, with additional time possible for corrections and interagency review..

What work is exempt from building permits in unincorporated Imperial County, CA?

The following work is generally exempt: Stopping leaks in drains, soil, waste, or vent piping, so long as defective piping is not removed and replaced with new material; Clearing stoppages, including removing and reinstalling water closets; Repairing leaks in pipes, valves, or fixtures when the work does not require replacement or rearrangement of valves, pipes, or fixtures; Portable motors or portable appliances connected by approved cord and plug; Repair or replacement of fixed motors, transformers, or approved appliances of the same type and rating in the same location; Temporary decorative lighting; Repair or replacement of current-carrying parts of switches, contactors, or control devices; Reinstallation of attachment-plug receptacles, but not the outlets for them; Repair or replacement of overcurrent devices of the required capacity in the same location; Taping joints, removal of wiring, certain temporary experimental or stage-set wiring, and low-voltage work under 25 volts and 50 watts, plus Class II and III low-energy control and signal circuits; Minor electrical repair work such as repairing flush and snap switches, replacing fuses, changing lamp sockets and receptacles, taping bare joints, and repairing drop cords; Electrical work performed by a public or private utility in providing utility service, plus certain IID structures used exclusively for power or water distribution with none or limited human occupancy. Note: County ordinance says permit exemptions do not authorize work that violates the code or other laws or ordinances. The County's public guidance also says virtually all construction requires permits of one type or another, so applicants should verify whether zoning, floodplain, fire, septic, encroachment, or other approvals still apply even if a narrow trade-code exemption exists.

How do I schedule a building inspection in unincorporated Imperial County, CA?

Inspections can be scheduled via: (442) 265-1736, press 1 or extension 1744. Inspection requests must be called in before 4:00 PM on the business day before the inspection is needed..