Recovery for buildings on Oahu's south side, where the December 2021 kona low flooded from Pearl City to Kahala.
Fastest: call (833) 490-5225. Or send this and we call you back.
South side flood recovery in Honolulu, Honolulu County, HI is the removal of flood water and the drying of buildings on the south side of Oahu, the area the National Weather Service Honolulu office reports as worst hit by the December 2021 kona low, from Pearl City to Kahala. Honolulu Water Damage Restoration sends a crew 24/7 as soon as one is free.
The south side of Oahu took the worst of the December 2021 kona low. The National Weather Service Honolulu office reports that flooding hit the south side especially from Pearl City to Kahala, after five to ten inches of rain across the island with peaks of ten to 13 inches. Buildings in that stretch were under water in a way that most storms do not reach, and the recovery work followed the same pattern as any large flood.
Recovery on the south side is a question of order. The water has to come out before drying starts, the electrical system has to be checked before power returns, and the wall cavities have to be read before they are closed. A building that was flooded and then left damp can grow mold or lose its structure, so the crew does not treat the first pump as the end of the job.
Honolulu Water Damage Restoration takes south side flood calls at any hour on (833) 490-5225. Tell the phone team the street, the building and how high the water reached. A crew is sent as soon as one is free, and it explains the steps before it starts.
Do not enter standing flood water, which can carry debris, contaminants and live electricity. Keep children and pets out of the water and away from the damaged building until the crew says it is safe. Do not use electrical equipment that was wet, and do not switch on the power to a flooded room until an electrician has checked it. If you smell gas or see damage to a gas line, leave the building and call emergency services from outside.
The phone team asks the street, the building type, the floor affected and the height of the water. The answers help the crew plan the first visit. Where the water line is photographed, the photographs are kept, because they show how the flood reached the building.
The technician checks that the structure is sound and the electrical system is safe before anyone enters the wet areas. Power to the wet rooms is off, and the crew does not use any wet outlet, panel or appliance.
Standing water is pumped out and the silt is cleared from the floors and the lower walls. The crew works from the lowest point toward the exit, so the water and silt have a clear route. Removed material is bagged and recorded as it leaves the building.
The walls and floors are read with moisture meters at several heights, and the readings are compared with a dry area of the same building. Where the readings are high, an opening is made to check the cavity and the framing. The readings set the drying plan.
Equipment is placed to dry the structure to the target, and the readings are logged on each return visit. The homeowner receives a record of the water removed, the materials dried or removed and the final readings, which is the basis for any claim or repair.
The National Weather Service Honolulu office reports that the December 2021 kona low brought five to ten inches of rain across the island, with peaks of ten to 13 inches. Flooding hit the south side especially from Pearl City to Kahala, and an Iwilei power substation was flooded, cutting power to downtown businesses and residents. The storm also prompted state and city emergency proclamations.
A storm of that size leaves water in streets, yards and buildings across a wide area at once. The recovery work for many buildings started at the same time, and the first priority was the same everywhere: remove the water, check the power and stop the damage from spreading.
The NWS reports the flooding extent from Pearl City to Kahala and the state and city emergency proclamations. This page does not add details beyond those reports, and it does not say how much any one building was flooded.
The south side needs the same steps as any flood recovery, but the order and the checks depend on how the water reached each building. Buildings that flooded from the street need different handling from buildings that took water through a drain or a roof. The crew reads each building before setting its plan.
Pearl City was named by the NWS as part of the flooding extent. A building there that took water from the street is handled in the same way as a street-flood job, with the silt line read and the entry point stopped before the drying starts.
The plan is set from the readings and the route of the water, not from the name of the area. Two buildings on the same street can need different plans if one flooded through its front door and the other through its drain.
Keep people out of the water, do not use electrical equipment that was wet and call the line. Take photographs of the water line and the damage before anything is moved. Keep a list of the items removed and the items kept, and do not throw away anything that might be needed for a claim.
Shut off power at the main switch only if you can reach it safely, and do not enter a room with standing water to reach it. If the power has already gone, the crew will tell you what is still on and what must stay off.
Do not start cleaning or drying the building yourself until the crew has read it, because the readings decide what is removed and what is dried. A quick clean can spread silt and hide the damp that needs checking.
A building is safe to live in again when the water is removed, the structure is dry to the target, the electrical system has been checked and the air is free of the smell of damp. The crew shows the readings and the inspection results, and the homeowner decides when to move back in.
Ask for the final readings and the electrical check to be given to you in writing. A building that is dry on the surface but not in the walls is not yet safe for the people living in it.
If mold appears or a smell returns, call the line and ask for a return visit. The crew will read the building again and tell you what the new readings mean.
Ask your insurer what it covers and how it wants the claim documented. The state and city emergency proclamations for December 2021 are a matter of public record. This page gives no grant, loan or assistance figures, and it does not promise any outcome from the insurer or a public body.
Keep the readings, the photographs, the removal list and the invoices together. Those records are needed for an insurance claim and for any public assistance a homeowner may apply for.
A question about public assistance should go to the agency that runs it, not to this site. The crew can provide the records it has made, and the homeowner can share them with whoever is assessing the claim.
A ground-floor home that took flood water usually has wet carpet, drywall and cabinets to the height of the water. The crew removes what cannot be dried, dries the structure and checks the electrical system before power returns. The records are kept for the insurer and any repair.
A shop or office at street level takes water through its front door and its loading area. The crew protects stock and records, shuts off wet circuits and plans the drying so the business can reopen in part as soon as the readings allow.
A garage or utility room often holds the water heater, the main switches and stored items, all of which are at the lowest point. The crew checks each piece of equipment before use and removes stored items that cannot be dried.
A building that was flooded in December 2021 and was not fully dried can take a second wetting from a later storm. The crew reads the building for old moisture as well as new, and it sets the plan so that the earlier problem is not hidden by the new water.
The south side of Oahu is where the December 2021 kona low was worst, from Pearl City to Kahala. A building in Honolulu that is on the south side has been through that storm's flood pattern, so the crew reads its walls and floors with that history in mind, including any signs of an earlier flood that was never fully dried.
The NWS Honolulu office records a long run of kona lows. A south-side building can be flooded again by the next storm, as the March 2026 slow-moving kona storm showed on saturated ground across Oahu. The crew asks about any earlier flood before it sets the plan.
Power outages are part of a south-side flood. The Iwilei power substation flooded in December 2021 and cut power to downtown businesses and residents. A building on the south side that is powered back on after an outage still needs its own electrical check if water reached its wiring.
If it's an emergency, call now. For non-urgent south side flood recovery, send the form and we'll call you back.
Not sure if you're covered? Check your ZIP code.
Standing flood water pumped out of Honolulu homes and shops after kona low storms, before any drying begins.
Repair of Honolulu buildings after flash flooding on ground already saturated by heavy rain, from the first pump to the final reading.
Shutting off power to flooded areas in Honolulu and having wiring, panels and appliances checked before anything is switched back on.
Water damage restoration for twelve Oahu communities in Honolulu County, from Kailua and Kaneohe to Waianae and Wahiawa.
Kona lows are storms that bring heavy, long-lasting rain to Oahu.
This site covers twelve Oahu communities in Honolulu County, Hawaii, which the fact sheet records as unincorporated census-designated places within the City and County of Honolulu, at medium confidence.
This page cannot say whether a particular building was flooded. The NWS reports the flooding extent from Pearl City to Kahala in December 2021. Look for a water line on your walls and call the line to have the building read.
It can be read and dried, but the longer the water stayed, the more material may have to be removed. Mold and structural damage are more likely in a building that was left damp. Call the line and ask for a reading before deciding what to do.
A qualified electrician should check the system before power is restored to any wet area. The crew shuts off wet circuits and tells you which ones must stay off until the check is made.
The policy decides. Insurers often treat flood damage differently from other water damage, so read the policy and ask the insurer directly. Keep the readings and photographs with the claim papers.
The crew works on any building that has taken water, including buildings outside the areas named in the NWS reports. The readings and the water route decide the plan, not the name of the area.
Photograph them, keep a list and move dry items out of the water if you can do it safely. Items that were in flood water often cannot be dried and are removed. Keep anything that might be needed for a claim until the insurer has seen it.
Ask for the final readings, the electrical check and the written record. The building is ready when the readings reach the target and the systems have been checked. If a smell or a stain returns, call the line for a return visit.