Before the Rain: A Water-Damage Checklist for Costa Mesa Homes

1. Make a simple record of existing leaks and water shutoffs

Look for drips, damp cabinet bases, water staining, or unexplained changes around plumbing fixtures and appliances. EPA WaterSense recommends regularly checking a home for leaks and addressing identified problems. A moisture or flow-monitoring device may alert you to unexpected dampness or unusual water use, but it cannot prevent every leak or replace an inspection.

If it is safe and clearly identified, learn where the household water shutoff is before an urgent situation. Do not operate unfamiliar equipment or enter a wet area to reach a valve. For a managed property, ask the owner or building manager who is responsible for the shutoff and how to report a leak.

• Photograph existing marks so you can compare them later.
• Keep a maintenance contact and property manager number where household members can find them.
• Ask a qualified professional about a leak that returns, spreads, or has an uncertain source.

Guidance references: [1] US EPA WaterSense: Home Maintenance; [2] US EPA WaterSense: Leak Detection and Flow Monitoring Devices

2. Look at drainage and exterior conditions only from a safe place

From the ground or another safe location, note visible conditions such as water collecting near an entry, a drain area that appears obstructed, or a previously reported exterior leak. Tell the property manager or an appropriately qualified maintenance professional about concerns that need inspection.

Do not climb onto a wet roof, stand on a ladder in poor conditions, enter flowing water, or try to clear a drain during active flooding. Do not make structural or electrical repairs yourself. A photograph taken from a safe position can help explain what you observed without putting you at risk.

If the property is part of a condo, rental, or managed building, confirm who receives urgent maintenance reports and how to contact them after hours. Exterior conditions and shared building systems may require authorization from the responsible manager.

Guidance references: [3] National Weather Service: Before a Flood

3. Prepare household contacts and a basic emergency plan

Choose how household members will reach one another if power or phone service is disrupted, and identify a safe place to meet if you are asked to leave. Keep essential contact details accessible in more than one way, such as on paper as well as on a phone.

Follow official weather alerts and instructions from local emergency authorities. The National Weather Service recommends preparing a communications plan and an emergency kit before flooding occurs. Do not wait for a restoration contractor when an evacuation or emergency response is needed.

• Save local emergency, property-management, and insurance contacts.
• Keep essential medications and important documents easy to locate.
• Review how household members will receive and act on official alerts.

Guidance references: [3] National Weather Service: Before a Flood

4. Organize photos, policy details, and property information

Before a loss, make a basic room-by-room record of valuable belongings and the visible condition of the property. Store copies of policy and contact information somewhere you can access if you cannot return to a room. The National Weather Service recommends making an itemized property list and photographing or recording the home in advance.

If damage occurs, contact your insurer for instructions specific to your policy and keep records of communications and reasonable temporary measures. The California Department of Insurance explains that claim steps and coverage depend on the policy and circumstances; this checklist cannot determine whether a future loss is covered.

Guidance references: [3] National Weather Service: Before a Flood; [4] California Department of Insurance: Residential Property Claims Guide

5. Know what to do if water gets inside

Stay away from water near electrical equipment and keep people out of unstable or contaminated areas. Do not walk or drive through floodwater. If the water source is uncertain or may involve outside runoff, do not start fans or spread water through the property before it has been assessed.

For a step-by-step response after rain enters a home, see our guide to water intrusion after heavy rain. Flood-Pro handles restoration inquiries around Costa Mesa and nearby communities; confirm the specific property's coverage and proposed work before arranging service.

Guidance references: [5] OSHA: Flood Preparedness and Response — Response/Recovery; [6] CDC: Safety Guidelines: Floodwater; [7] US EPA: Table 1: Water Damage — Cleanup and Mold Prevention (clean water)