Home Insurance After a Major Renovation in Washington
You spent months planning the renovation. Maybe it was a kitchen gut and rebuild, a primary bedroom addition, a finished basement, or a new detached garage. The work is done, the permits are closed, and the house looks better than it ever has.
What most Washington homeowners don’t do is call their insurance company.
That’s a problem. A major renovation changes the rebuild cost of your home, sometimes significantly. If your policy hasn’t been updated to reflect that change, you may be substantially underinsured without knowing it.
This guide covers what changes after a renovation, what to update on your policy, and the specific mistakes that leave Washington homeowners exposed.
Why renovations create an insurance gap
Your homeowners policy is built around one number: the cost to rebuild your home as it was when the policy was written. When you renovate, that number changes.
A kitchen remodel that adds custom cabinetry, upgraded appliances, and new flooring changes the per-square-foot rebuild cost of that space. An addition increases your total square footage. A new detached garage adds a structure that needs to be covered under Coverage B. Each of these changes the math your insurer used to set your original limits.
If you don’t notify your insurer, your policy reflects a home that no longer exists. You’re paying premiums based on the old structure, and in the event of a claim, your coverage may fall short of what the rebuild actually costs.
Washington construction costs have risen sharply since 2020. A renovation completed at today’s rates adds value at today’s costs. The dwelling coverage guide covers how to estimate the right Coverage A limit for your home’s current state.
What to update on your policy after a renovation
Not every renovation requires the same response. Here’s what to evaluate based on the type of work done.
Dwelling coverage (Coverage A)
This is the most important update for most renovations. If your project added square footage, upgraded structural components (roof, foundation work, framing), or significantly improved the quality of finishes in a major living area, your Coverage A limit should be reviewed.
The right Coverage A limit is the estimated cost to rebuild your home from the ground up at current Washington construction costs, not its market value, not your loan balance. If you haven’t updated this number since the renovation, ask your insurer to rerun their replacement cost estimator with the current specs.
Other structures coverage (Coverage B)
Coverage B covers structures not attached to your home: detached garages, sheds, workshops, fences, ADUs. It defaults to 10% of your Coverage A limit. If you built or significantly improved a detached structure as part of your renovation, that 10% default may no longer be adequate.
A new detached garage in the Seattle metro can cost $60,000 to $120,000 or more depending on size and finish. If your Coverage A is $500,000, your default Coverage B is $50,000. Depending on the garage, that gap could be meaningful.
Personal property coverage (Coverage C)
Renovations often include new appliances, built-in electronics, custom furniture, or other high-value personal property. Coverage C covers your belongings up to a limit, typically 50–70% of Coverage A. Review whether the limit still reflects what you actually own.
Also confirm whether your personal property is covered at replacement cost or actual cash value. The replacement cost vs. actual cash value guide explains the difference and why it matters at claim time.
Liability coverage (Coverage E)
If your renovation added a pool, hot tub, trampoline, or any feature that increases your liability exposure, it’s worth reviewing your liability limits. Standard policies include $100,000, but many insurance professionals recommend $300,000 or more for homeowners with meaningful assets or higher-risk features.
The code upgrade problem renovations create
When a renovation requires a building permit in Washington, the work must meet current building codes. That’s straightforward for the renovation itself.
The issue is what happens if a major loss occurs after the renovation. When your home is rebuilt after a fire or other covered event, the entire structure must meet current code, not just the renovated portion. If your home is older, that can mean significant additional costs for electrical upgrades, insulation standards, seismic reinforcement, and energy efficiency requirements that go beyond simply replacing what was there.
Many policies offer an ordinance or law endorsement that covers the additional cost of bringing your home up to current code during a rebuild. If you haven’t added this endorsement and your home is more than 15–20 years old, it’s worth asking your insurer about it. The cost is typically modest relative to what it covers.
During the renovation: coverage you may not have
The insurance gap doesn’t only happen after the renovation is complete. During construction, your standard homeowners policy may not fully cover the work in progress.
A few things to understand about coverage during an active renovation:
Standard homeowners policies cover the existing structure, not construction materials sitting on your property waiting to be installed. Lumber, fixtures, and appliances stored on-site before installation may not be covered if they’re stolen or damaged.
Vacant or partially occupied homes during major renovations can create coverage complications. Some policies include vacancy clauses that limit coverage if the home is unoccupied for an extended period.
Contractor liability is the contractor’s responsibility, but confirming they carry adequate general liability and workers’ compensation before work begins protects you from claims that could otherwise land on your policy.
For significant projects, ask your insurer whether a builder’s risk policy or a renovation endorsement makes sense for the duration of the work. It’s a short-term coverage addition that can prevent a meaningful gap during the construction window.
When to notify your insurer
The right time to contact your insurer is before the renovation starts, not after. Here’s why:
Your insurer can confirm whether your existing policy covers the work in progress or whether you need a temporary endorsement.
Some insurers require notification of major renovations as a condition of coverage. Not notifying them could complicate a claim related to the renovation.
Getting a preliminary estimate of how your premium and limits will change after completion lets you plan for the adjustment.
If the renovation is already complete and you haven’t notified your insurer, do it now rather than waiting for your next renewal. A mid-term policy update is standard and your insurer can adjust your limits and premium accordingly. Waiting until renewal means going through your next policy year underinsured.
Renovation as a reason to compare carriers
A major renovation changes the profile of your home. That makes it a natural moment to ask whether your current carrier is still the right one.
Washington’s insurance market has genuine regional competition. PEMCO, in particular, is a regional carrier that prices specifically for Washington homeowners and doesn’t appear on most national comparison platforms. If you haven’t gotten a quote from them recently, a post-renovation policy review is a good opportunity.
It’s also worth revisiting whether bundling your home and auto is still the right call. Washington’s regional market means the answer isn’t always yes, and a higher Coverage A limit after a renovation changes the bundling math.
If you decide to switch carriers after your renovation, here’s how to do it without a coverage gap.
A practical checklist for Washington homeowners after a renovation
Notify your insurer that the renovation is complete
Request a rerun of the replacement cost estimator with current specs
Update Coverage A to reflect the new rebuild cost
Review Coverage B if you added or improved any detached structures
Confirm Coverage C limit still reflects what you own
Ask about an ordinance or law endorsement if your home is more than 15–20 years old
Review liability limits if you added a pool, hot tub, or other higher-risk feature
Check your declarations page after the update to confirm all changes are reflected correctly
Not sure whether your post-renovation coverage is set up correctly? BeniRate’s free Coverage Checkup takes about two minutes and surfaces the specific questions worth reviewing before your next renewal. No personal information required. Take the free Coverage Checkup →
This article is for educational purposes only and does not constitute insurance advice. BeniRate is an affiliate publisher, not a licensed insurance agency. Coverage availability and requirements vary by lender and insurer.
