Water Damage Is Sinking Landlord Profits: 6 Insurance Claim Mistakes Delaware Owners Make

Water damage is one of the most disruptive events a rental property owner can face. A failed water heater, burst washing-machine hose, frozen pipe, roof leak, or underground service-line break can quickly create repair costs, tenant disruption, lost rent, and an insurance claim that takes months to resolve.

The financial damage often becomes worse because of avoidable insurance mistakes. In our experience managing and rehabbing Delaware rentals, owners frequently discover coverage gaps only after water is already moving through the walls.

The good news is that landlords can reduce both the likelihood and cost of water losses through proper maintenance, accurate insurance reviews, and consistent documentation. Here are six mistakes that can quietly sink rental property profits.

Important: Insurance coverage depends on the specific policy, endorsements, exclusions, deductibles, and facts of the loss. Review your policy with a qualified insurance professional before making coverage decisions.

1. Lacking a service-line endorsement

A standard rental property policy may cover certain types of sudden and accidental water damage inside the building. However, damage to underground utility lines may require separate service-line coverage.

Service lines can include underground water, sewer, electrical, communications, and similar lines serving the property. If a buried water or sewer line breaks because of freezing, corrosion, root intrusion, or another covered cause, the cost may include:

• Locating the break

• Excavating the property

• Repairing or replacing the line

• Backfilling and compacting soil

• Restoring landscaping, paving, or hardscaping

• Addressing resulting interior water damage

Without the appropriate endorsement, the landlord may be responsible for some or all of these costs.

This is particularly important for older Delaware properties, multifamily buildings, and homes with aging underground infrastructure. Ask your insurance agent whether service-line coverage is available, what lines are included, the coverage limit, and whether a separate deductible applies.

Do not assume that having plumbing coverage automatically means every pipe on the property is covered. The location and cause of the failure often determine which part of the policy applies.

2. Underinsuring water-loss coverage

Many landlords focus on the building’s market value or purchase price when reviewing insurance. Those figures do not necessarily represent the cost to repair or rebuild the structure after a major loss.

Construction labor, materials, demolition, debris removal, and permit costs can rise significantly between policy renewals. A policy limit that seemed adequate several years ago may no longer be sufficient. The Delaware Department of Insurance homeowners guide recommends reviewing coverage limits regularly and basing dwelling coverage on rebuilding cost rather than land value or market value.

Water-loss coverage should be reviewed as a complete package, including:

• Dwelling coverage

• Other structures coverage

• Replacement-cost versus actual-cash-value provisions

• Loss-of-rents or business-income coverage

• Ordinance-or-law coverage

• Sewer or drain-backup coverage

• Flood insurance, where applicable

• Equipment-breakdown coverage

• Service-line coverage

• Deductibles and sublimits

A serious water loss can make a unit uninhabitable for weeks or months. If loss-of-rents coverage is missing or too low, the landlord may receive payment for structural repairs while still absorbing the lost rental income.

Flooding is another common source of confusion. Standard property policies generally exclude flood damage, and sewer backup may also require separate coverage. Ask your agent to explain the difference between a sudden internal plumbing loss, groundwater or flood damage, and water backing up through a drain.

3. Failing to document the damage properly

The first photographs taken after a loss can become some of the most important evidence in the claim. Yet owners often begin demolition or cleanup before documenting where the water came from, how far it traveled, and what materials were affected.

Before removing damaged materials, when it is safe to do so:

1. Photograph and record video of the source of the water.

2. Capture wide views of every affected room.

3. Take close-up images of flooring, drywall, ceilings, cabinets, appliances, and personal property.

4. Photograph water lines, shutoff valves, pipe connections, and visible failure points.

5. Record moisture readings where available.

6. Save damaged components when practical and safe.

7. Make a written timeline of the event.

8. Keep invoices, receipts, estimates, work orders, and communications.

Documentation should show both the damage and the condition of the property before the loss. Inspection reports, maintenance records, dated photographs, tenant communications, and completed work orders can help establish that the owner was addressing known risks.

The Delaware Department of Insurance specifically advises consumers to document losses, obtain repair or replacement estimates, make only urgent temporary repairs before inspection when possible, and retain receipts for expenses. Its water-damage prevention guidance also identifies washing-machine hoses, refrigerator supply lines, water heaters, roofs, and plumbing leaks as common sources of costly damage.

4. Mishandling the claim timeline

Water claims require two processes at once: stopping additional damage and preserving the insurer’s ability to investigate the original loss.

Delaying either process can hurt the owner financially. A landlord should generally:

• Shut off the water or take other reasonable steps to stop active damage.

• Contact emergency restoration or maintenance support.

• Notify the insurer promptly.

• Ask for the claim number and adjuster’s contact information.

• Confirm what emergency work is authorized.

• Preserve evidence and damaged components when possible.

• Keep a dated log of calls, inspections, estimates, approvals, and payments.

• Communicate with tenants in writing about access, safety, and repair progress.

Do not wait until every estimate is complete before reporting a significant loss. At the same time, avoid making permanent repairs that erase evidence before the insurer has a reasonable opportunity to inspect, unless immediate action is necessary to protect people or prevent further damage.

Delaware insurance guidance indicates that insurers must acknowledge and respond to claims within 15 working days, subject to applicable rules and circumstances. If communication or payment appears unreasonably delayed, owners can contact the Delaware Department of Insurance or review the consumer assistance information provided by United Policyholders.

A claim file should tell a clear story: what happened, when it happened, what was done immediately, what remains damaged, and what it will cost to restore the property.

5. Ignoring overhead and profit disputes

Water restoration often involves several trades: plumbing, drying, demolition, drywall, flooring, painting, electrical work, cabinetry, and finish carpentry. When multiple trades must be coordinated, a general contractor may be necessary.

Overhead and profit: often abbreviated as O&P: compensates the general contractor for project supervision, scheduling, administration, insurance, equipment, and business profit. It is commonly included as a percentage of the repair estimate, but whether it applies and how much is owed depends on the policy, scope, and claim circumstances.

Insurers may initially omit O&P from an estimate, particularly when the work appears limited or when the owner has not established that a general contractor is required. That does not mean the issue should be ignored.

Ask for:

• A detailed estimate broken down by trade

• A written explanation for any excluded O&P

• Confirmation of whether a general contractor is reasonably required

• Revised estimates as the scope expands

• Written responses from the adjuster

• Copies of contractor proposals and signed scopes

A complete scope is especially important when hidden moisture is discovered behind walls or under floors. If the repair grows from a simple plumbing fix into a multi-trade restoration project, the claim estimate should be updated accordingly.

Do not accept or reject an O&P position based only on a verbal conversation. Keep the discussion in writing and have your insurance professional review disputed items.

6. Not understanding how claims affect premiums

A claim is designed to protect an owner from a covered loss, but filing decisions can have future consequences. Insurers may consider claims history, the type and severity of the loss, the property’s condition, and the owner’s overall risk profile when pricing or renewing coverage.

The Delaware Department of Insurance explains that multiple claims or a substantial change in risk may affect nonrenewal decisions. An insurer may also be concerned when a property has aging plumbing, an unrepaired roof, repeated leaks, or other conditions that increase the chance of future losses.

This does not mean landlords should avoid reporting legitimate claims. Failing to report a covered loss promptly can create coverage problems and may allow damage to spread. Instead, owners should work with their agent to understand:

• The deductible compared with the likely repair cost

• Whether the loss is likely to exceed the deductible

• How the insurer treats water claims

• Whether repeated claims could affect renewal

• Which maintenance improvements may reduce risk

• Whether available discounts apply after upgrades

The best way to protect long-term insurability is not to hide losses. It is to correct the underlying cause, maintain detailed records, and demonstrate that the property is being responsibly managed.

Maintenance and documentation are part of risk management

Insurance is only one layer of protection. Preventive maintenance reduces the likelihood of a loss, while accurate records help establish what happened and how the property was maintained.

Advanced Realty Solutions’ in-house maintenance team responds directly to tenant complaints and service requests, including plumbing, HVAC, roof repairs, electrical work, and other conditions that can lead to water damage. Work orders, costs, and completed repairs are tracked and reported to property owners.

That process matters because a small leak reported and repaired quickly is usually far less expensive than a hidden leak that damages flooring, subflooring, drywall, insulation, and personal property. Regular inspections can also identify aging hoses, corroded valves, roof problems, poor drainage, and exposed pipes before they become insurance claims.

Delaware law requires landlords to maintain rental units and keep supplied plumbing and other facilities in good working order. If a water loss affects essential services, tenants may also have legal remedies under Delaware Code Title 25, § 5308. Fast communication and documented repairs protect both the property and the landlord-tenant relationship.

Final takeaway

Water damage does not have to become a portfolio-threatening event. Landlords can reduce financial exposure by reviewing endorsements before a loss, insuring the property to current rebuilding costs, documenting damage from the first response, following the claim timeline, addressing O&P carefully, and understanding the potential effect on future premiums.

The strongest protection is a coordinated system: appropriate insurance, reliable maintenance, responsive tenant communication, and records that show every important action. For Delaware owners who want that process handled by one experienced team, Advanced Realty Solutions provides full-service property management and in-house maintenance throughout Delaware. You can request a management consultation to discuss how your property’s maintenance and risk-management needs are being handled.