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Renovating your home changes its value, its risk profile, and what it costs to rebuild. Your insurance policy cares about all three. Most homeowners update their policy eventually. The smart ones do it before the contractor starts.
Renovations that raise your premium
Any project that increases rebuild cost will usually increase your premium, because your dwelling coverage has to rise to match. The common ones:
- Additions. New square footage is new rebuild cost. A 400-square-foot addition can add five figures to your Coverage A.
- Kitchen and bathroom remodels. High-end finishes, stone counters, and custom cabinetry cost more to replace than what was there. The insurer’s replacement-cost estimate should reflect the upgrade.
- Finished basements. A finished basement adds living space and a new category of water-damage exposure. Some carriers surcharge finished basements specifically.
- Pools and trampolines. These are liability magnets. Many carriers raise rates or require additional liability coverage when they appear.
- Home offices for business use. A home office used occasionally is usually fine. Client visits, inventory, or employees trigger the need for business endorsements.
The premium increase is proportional, not punitive. You are insuring a more expensive house. The mistake is not the higher premium. The mistake is the higher rebuild cost with the old coverage limit, which leaves you underinsured if something happens mid-project.
Renovations that can lower your premium
Not every project costs you at renewal. Some reduce risk enough that insurers discount for them:
- Roof replacement. A new roof, especially impact-resistant or Class 4 rated, can earn meaningful discounts. Roof age and material are major rating factors; see how roof material affects your rates.
- Updated electrical, plumbing, and HVAC. Replacing knob-and-tube wiring, galvanized pipes, or a 30-year-old furnace removes some of the most common claim causes. Carriers in several states discount for updated systems.
- Security and smart-home systems. Monitored alarms, water leak sensors, and automatic shutoff valves reduce burglary and water-damage claims. Discounts vary but stack.
- Storm mitigation. Hurricane straps, impact windows, and reinforced garage doors earn wind-mitigation credits in coastal states.
Coverage gaps during the project
This is the part people miss. A standard homeowners policy assumes an occupied, intact home. A renovation in progress changes that assumption in ways that can void coverage:
- Vacancy. If you move out during a major renovation, the home may be classified as vacant after 30 to 60 days, depending on the policy. Vacant-home coverage is a separate product, and standard policies often exclude vandalism and sometimes water damage for vacant homes.
- Theft of materials. Building materials sitting on site are generally not covered until they are installed. Your contractor’s insurance should cover their materials, but confirm it.
- Liability for workers. Your contractor should carry their own liability and workers’ compensation. Ask for the certificate before work starts. If an uninsured worker is injured on your property, your policy may be the one that pays.
- Increased value mid-project. Some carriers offer a builder’s risk endorsement or renovation coverage that automatically increases your dwelling limit during construction. Ask for it.
What to tell your insurer and when
Call your agent before the project starts, not after it is done. Tell them the scope, the budget, the timeline, and whether you will live in the home during construction. Get the coverage adjustment in writing.
When the project is finished, call again. Provide the final cost, updated square footage, and documentation of any risk-reducing upgrades. This is also the moment to review your personal property coverage if you bought new furniture or equipment, and to schedule high-value items like jewelry or art that may exceed standard sublimits. Our guide to scheduled personal property coverage explains when a separate rider makes sense.
One last note: permits matter to insurers too. Unpermitted work can complicate a claim if the damage traces back to the renovation. Pull the permits, keep the paperwork, and send your agent the completion certificate.
