Do Smart Homes Lower Insurance?

Prices and rates in this article were checked October 2026.

Section 1: How big is the smart home insurance discount really? (Introduction)

Smart home insurance discounts are smaller than the pitch: typically a few percent for monitored alarms, smoke detectors or water shutoffs, and rarely for a $30 sensor. Ask your insurer before buying hardware for the discount; document the install either way.

Search for “smart home insurance discount” and you will find claims of 20 percent off, sometimes more. The reality is more modest. Most insurers offer a discount for a monitored alarm or a leak detection system, but the credit is typically in the single digits, it varies by state, and it often requires professional monitoring rather than the DIY sensors in the box.

Those headlines usually trace back to one of three things: a commercial sprinkler system, a bundle of credits stacked on a new home, or an insurer’s maximum published credit before state filings cut it down. The number is not invented. It is just not the number most houses qualify for.

That does not make the discount worthless. It makes it the second reason to buy the device, not the first. The first reason is that water damage and fire are expensive, and a device that catches either early pays for itself in avoided damage long before the premium credit shows up.

This guide covers what insurers actually reward, how the math works on a real premium, what to document, and the order to buy things in. For the wider picture, start with the Foundations hub.

Section 2: What do insurers actually reward?

Insurance discounts are filed by state, which is why the same company can offer 5 percent in one state and nothing in another. The categories are fairly consistent, though.

Monitored alarms

The Texas Department of Insurance lists a “safe home discount” for a monitored security alarm or a smart home system, and a separate discount for smoke alarms and sprinklers. State Farm’s homeowners discount page describes a home security discount for fire, smoke, or burglar alarms or “any other eligible home monitoring system known as a protective device,” and notes that discounts vary by state.

Renters and condo owners are a separate case. A renters policy covers contents and liability, not the building, so a building-level alarm does not earn a credit on it. In a condo, the HOA may already carry the alarm; ask before buying a duplicate.

The pattern in both: monitoring is the qualifier. A self-monitored camera and a siren may make you safer, but many insurers want a central station that calls the fire department or the police. Ask before you buy, not after.

Water leak detection

This is the category that has grown fastest, because water claims are frequent and expensive. Some insurers discount a leak detection system that notifies a third party, and a smaller set discount an automatic shut-off valve. The California Department of Insurance’s 2018 rate comparison footnotes show company-specific credits such as 3 percent for a water alarm and 5 percent for smoke plus a local burglar alarm, with 10 percent for a central-station alarm. Those are examples from individual filings, not a national standard.

The qualification details matter more than the brand. Some carriers want a third-party notification, some want an automatic shut-off, and some accept either. A sensor that only sounds a local siren may not count at all, which is why the call to the agent comes before the purchase.

Smoke alarms and deadbolts

Smoke alarms are often assumed. California’s sample explicitly notes that all properties are assumed to have smoke detectors, which means the “discount” may already be baked into the base rate. Deadbolt credits exist too, but they are usually bundled with the alarm discount rather than stacked on top.

What the discounts actually look like

Discounts for smoke detectors, burglar alarms and deadbolts are common, and some companies offer more for a sprinkler system combined with monitored alarms that report to a monitoring station. The exact credit is filed by state, so ask your insurer rather than relying on a national average. The larger percentages apply to commercial-grade setups, not to a $30 sensor.

Section 3: What is a discount worth on a real premium?

The average homeowners premium was $1,569 in 2022, according to NAIC data compiled by the Insurance Information Institute, up 11.2 percent from 2021. Use that as a scale, not a quote.

The first three rows are the realistic range for a normal house. The fourth requires a sprinkler system, which is a different project.

A 5 percent credit on that premium is $78 a year, or about $6.50 a month. If a monitoring plan costs $30 a month, the credit covers a fifth of it. That is the arithmetic to do before the sales call: credit minus the recurring cost, not credit alone.

Now compare the discount to the device. A monitored alarm costs several hundred dollars a year in monitoring fees, and a smart water shut-off valve costs several hundred dollars installed. A 5 percent discount on an average premium is $78 a year — real money, but it does not pay for the hardware on its own. If the discount is the only reason you are buying, the math does not close.

The better framing: the device has to justify itself on prevention, and the discount is a rebate on top.

Section 4: Which device prevents the claim that costs the most?

Insurance is a business of small probabilities and large losses, and the smart home is good at the large losses.

The III’s loss data, drawn from ISO, shows that in 2023 5.33 out of every 100 insured homes filed a claim, and the average claim severity was $20,062. Water damage and freezing accounted for 22.6 percent of homeowners claims that year, behind wind and hail at 42.5 percent but ahead of fire and lightning at 21.6 percent.

That water number is the case for a leak sensor and a shut-off valve. A single avoided claim at the average severity is worth roughly 250 years of a 5 percent discount, or more than 400 years of the 3 percent water credit. The sensor does not have to be perfect; it has to catch the supply line behind the washer before the floor does.

For the hardware side, the best leak detectors for basements compares point sensors and shutoff valves by price, installation and what each one actually catches.

Water claims are also the ones a smart valve prevents most directly. A burst supply line releases gallons per minute; a shut-off valve closes in seconds. That is why several carriers now partner with leak-detection vendors and write credits for the hardware.

The same logic applies to fire. A monitored smoke alarm may earn a small credit, but the reason to interconnect every alarm is the NFPA’s finding that working alarms cut the risk of dying in a home fire by about 60 percent. No discount approaches that.

What insurance does not do

A standard homeowners policy is not a maintenance contract. Gradual leaks, poor maintenance, and wear and tear are typically excluded, and flood is a separate policy. A smart shut-off valve that prevents a burst supply line is insurable value; a sensor that tells you the basement has been damp for a month is a maintenance reminder.

Documenting your contents is the other half of the claim side, and it costs nothing. A phone video walking through each room, with closets and drawers open, is the inventory most people never make. The III’s consumer survey found that only 47 percent of homeowners had prepared one. If a pipe fails, the adjuster will ask what was damaged; the video answers faster than memory.

Read the exclusions before you assume the device changes your coverage. The discount is on the premium, not on the policy’s willingness to pay.

Section 5: How do you ask for the credit, and what should you document?

The discount is not automatic. Insurers price from what they know, and they do not know you installed a valve unless you tell them.

Before you buy

Call your agent and ask three questions:

1. Which devices qualify? A monitored alarm, a leak detector, a shut-off valve, or a specific brand?
2. What proof is required? A monitoring certificate, a receipt, a model number, or an installation invoice?
3. What is the credit, in dollars? Ask for the number on your premium, not the marketing range.

If the answer is “we don’t offer that in your state,” you have saved yourself a purchase.

A script for the call

“Hi, I’m adding a monitored alarm and an automatic shut-off valve at my address. Before I buy, can you tell me whether they qualify for a credit, what documentation you need, and the dollar amount on my premium? If they don’t qualify in my state, is there a different device that does?”

Write down the answer and the date. If the credit appears at renewal without explanation, you will want the record.

After you install

• Keep the receipt and the model number. A photo of the label is enough.
• Get a monitoring certificate from the alarm company if the system is professionally monitored. Insurers often ask for it at renewal.
• Send the update in writing and ask for a confirmation of the new premium.
• Review it annually. Credits change, and a policy that was rewritten at renewal may have dropped one.

The privacy trade

A monitored system shares event data with the monitoring center, and some insurers offer telematics or leak-detection programs that share more. That is a real trade: you get a discount and faster response, and the insurer gets a stream of data about your house. Read the terms, and prefer systems that keep the automation local where the discount does not depend on the cloud.

Section 6: What should you buy first? (Conclusion)

1. Buy prevention first. A water shut-off valve, interconnected smoke and CO alarms, and a monitored alarm if the house warrants it. These are the devices that change outcomes.
2. Ask for the credit. Call the agent with the model numbers before and after installation, and get the dollar figure in writing.
3. Document everything. Receipts, certificates, and a photo of each label. The paperwork is the discount.
4. Do not buy for the discount alone. A $78 credit does not justify an expensive valve or a monthly monitoring fee; the avoided claim does.
5. Re-shop the policy, not just the devices. Bundling, deductibles, and roof age often move the premium more than any smart device.

If the credit is declined, ask why. Sometimes the device is not on the insurer’s approved list; sometimes the state filing does not include it; sometimes the agent has simply never been asked. A follow-up with the model number and the receipt resolves a surprising number of these.

Some households should skip the insurance angle entirely. If you rent, the landlord’s policy covers the building and your renters policy covers your stuff; the discount conversation belongs to the owner. If you are in a state where the credits are tiny or unavailable, the device still has to stand on its own.

The smart home’s best insurance argument is not the discount. It is the phone call you get at 2 p.m. instead of the adjuster’s visit at 2 a.m. The check is smaller than the ads suggest; the avoided claim is not, and the claim is the part you cannot budget for.

Where to buy

Related reading

• Water Leak Sensors 101 — the device behind the water discount.
• Home Security Systems 101 — monitoring, contracts, and what qualifies.
• Smoke and CO Alarms 101 — the fire side of the policy.
• Renting a Smart Home — who insures what when you do not own the building.

Sources

• III: Homeowners and Renters Insurance Facts and Statistics — $1,569 average premium in 2022, 5.33 claims per 100 house-years and $20,062 average severity in 2023, loss causes, checked October 2026
• Texas Department of Insurance: Lower your home insurance cost by asking for discounts — safe home discount for monitored alarms or smart home systems, smoke and sprinkler discount, checked October 2026
• State Farm: Homeowners Insurance Discounts — home security discount for fire, smoke or burglar alarms and protective devices, state variation, checked October 2026
• California Department of Insurance: Rate Comparison Footnotes — company-specific 3 percent water alarm, 5 percent smoke plus local alarm and 10 percent central-station examples, checked October 2026