Stop a Small Leak From Becoming a Major Water-Damage Claim
Automatic leak detection and main-line water shutoff, professionally designed and installed by the Southern California contractor who rebuilds water-damaged homes every day.
The FlowSmart Automatic Shutoff System detects leaks early and automatically shuts off the main water supply — helping limit the amount of water released and reduce the risk of catastrophic damage.
The Real Cost of a Small Leak
A small leak isn't the disaster. The water-damage claim is.
Most water damage starts with a leak the size of a pinhole. By the time it's found, the real cost isn't the leak — it's everything that comes after.
Your home gets torn apart
Wet drywall, flooring, cabinets, and baseboards may need to be removed before reconstruction can even begin.
Daily life gets disrupted
Kitchens and bathrooms can become unusable, drying equipment runs around the clock, and some families have to temporarily relocate.
Insurance doesn't remove every cost
Deductibles, coverage limits, depreciation, matching disputes, and approval delays can still land on the homeowner.
Repairs can take weeks or months
Mitigation, estimates, approvals, materials, and multiple trades all add time before your home is whole again.
A second loss may threaten insurability
Claim history can affect premiums, deductibles, eligibility, or renewal — depending on the carrier and policy.
Every one of these traces back to one thing: a leak nobody caught in time. The good news is that the most catastrophic failures are also the most preventable.
How The Protection Works
It catches the leak — then shuts the main water off for you
Even when you're asleep, at work, or away with the house empty.
Early Leak Detection
Long-range sensors sit at your highest-risk spots — water heater, laundry, under sinks, behind the fridge — and detect water the moment it appears.
Automatic Main-Line Shutoff
The heart of the system. When a leak is detected, an NSF-certified valve closes your main line automatically — helping limit the amount of water released, even if no one's home.
Free App — Watch It Yourself
Every FlowSmart Automatic Shutoff System includes a free app: see your home's status, get leak alerts, track water usage, and shut your water off from anywhere. No subscription required.
Built to Last, No WiFi Headaches
A long-life valve battery and long-range wireless that keeps working even when the internet doesn't. The automatic local shutoff works without WiFi or power.
Why We're Different
We repair water damage every day. This is the system we install to prevent it.
You can buy a leak sensor online. You can have a plumber bolt a shutoff valve onto your main line and leave. Neither of those is what we do — and the difference is everything.
A DIY device or a plumber-installed valve
- A box you set up yourself, or a valve someone installs and walks away from.
- Sends an alert to your phone — and then you're on your own.
- No one stands behind what happens next.
- It's a product.
M. Fitts Whole Home Water Protection
- Designed, installed, and finished by a licensed general contractor who rebuilds water-damaged homes.
- NSF-certified automatic shutoff + whole-home leak sensors + cabinet protection, finished to a construction standard — not a gadget bolted to a pipe.
- The automatic local shutoff works even without WiFi or power.
- Optional professional monitoring through Water Protection Plus, so your protection doesn't depend only on you catching a notification.
- And the part no device company can offer: if your home ever needs water-damage repairs, you already know the contractor to call.
Simple From Start to Finish
Protecting Your Home Is Simple
Assess
We inspect the main water line, water pressure, common failure points, and the areas where sensors will provide the most protection.
Design & Install
We confirm an all-in price, install the automatic shutoff and sensors, set up the app, test the system, and finish the installation area properly.
Protect
Your system watches for leaks and can automatically close the main water supply. Monitor it yourself for free, or add Water Protection Plus.
Why Homeowners Trust Us With This
Backed by real reconstruction experience
M. Fitts Construction Co is a licensed Inland Empire general contractor rated in the Top 5% of California contractors by BuildZoom. We've rebuilt water-damaged homes for years — which is exactly why we know where homes fail and where to protect yours.
A real bathroom we rebuilt after a water loss — studs to finished. A whole-home main-line shutoff is what helps stop a leak from getting this far.
🪪 Licensed, Insured & Bonded
CSLB General B License #1098070, fully insured and bonded — and rated in the Top 5% of California contractors by BuildZoom. A real contractor stands behind the install, not a box from an online store.
🏚️ We've Seen the Worst
From gutted bathrooms to ruined flooring, we know exactly where homes fail — so we know exactly where to protect yours.
🤝 One Call, Start to Finish
Assessment, install, and — if your home ever needs water-damage repairs — the reconstruction. The same trusted local Inland Empire team.
"We had a water leak at our home. This requires a wall of our house to be rebuilt along with a shower and much of our garage and bathroom. Matt and his team took great care to do the work properly and kept us informed with perfect communication. Things went so well we will be working with them again for some remodel work soon."
"We chose M. Fitts Construction from three bidders offered by Realm, construction management company. M. Fitts provided the best proposal and we are very pleased with the work."
"I had a very positive experience with this company. They were very professional and detailed. I love their work. They brought my vision to life!"
Comes With Every Install
Our Promise: Never Face Water Damage Alone
No system can promise that water will never escape or that damage can never occur. We can promise to install your protection correctly, stand behind our workmanship, and be the contractor you can call if your home ever needs water-damage repairs.
If damage ever occurs, you already know who to call
If water damage occurs, M. Fitts Construction can inspect the construction damage, document the repair scope, prepare a detailed construction estimate, communicate about the construction work, and rebuild the affected areas. The homeowner remains responsible for the insurance claim and coverage decisions unless they separately retain an appropriately licensed insurance professional.
Workmanship: if our installation workmanship is defective, we will make the installation right in accordance with our written workmanship warranty.
The Technology
Two layers of protection that watch your home — and watch themselves
Most "leak detectors" are a single puck that beeps on the floor. Your system protects on two levels at once — and it never stops checking that it's actually working.
💧 Layer 1 — At your main line: advanced ultrasonic metering
The heart of the system is an NSF-certified shutoff valve built around an ultrasonic water meter. Instead of a mechanical paddle or turbine that can wear out or clog, it measures water flow with sound waves — sensitive enough to catch even a small, continuous flow, which is exactly what a slow, hidden leak produces. When water keeps running when it shouldn't, it flags the abnormal flow, alerts you, and can shut the main off automatically. It also tracks your water usage and warns of freezing conditions before pipes can crack.
🛡️ Layer 2 — At every high-risk spot: sensors guard where leaks start
Small wireless sensors sit exactly where water damage begins — under sinks, behind the fridge, at the water heater, the washer, toilets, and HVAC. They detect water dripping from above and pooling from below, sound a loud alarm, and can trigger the main shutoff. They reach long range, run for years on a battery, are waterproof, and warn you of freezing temperatures. The key part: they can trigger the shutoff even with no WiFi, no internet, and no power.
🔄 And the part that sets it apart: the system watches itself
Every device is continuously supervised for health and signal. If a sensor's battery runs low or it stops responding, you're notified — so your protection doesn't quietly fail in the background. That's the hidden danger of a cheap detector: you don't find out it stopped working until after a leak.
Protection Built for Your Home
One complete system, priced to your home
Every install centers on the same NSF-certified FlowSmart Automatic Shutoff System and smart hub. The only things that change are how many leak sensors your home needs and how involved the install is — so you only pay for what your home actually requires. From $1,350 installed, with most homes currently estimated around $1,450–$1,500. Final pricing depends on main-line size, access, sensor count, and installation conditions, and is confirmed before work begins.
Pay by cash, check, debit, bank transfer, or financing at no added cost. Credit cards add a 3% processing fee.
M. Fitts Whole Home Water Protection
- NSF-certified FlowSmart Automatic Shutoff System
- Smart hub & long-range wireless — keeps working even if WiFi drops
- Leak sensors at your highest-risk spots — water heater, laundry, kitchen, baths & fridge
- Free mobile app — leak alerts, water-usage monitoring & shutoff from anywhere
- Professional install by our own licensed crew (CSLB #1098070)
Included with every install — no extra charge
Because we're an in-house construction crew, several things other installers charge for — or skip — come standard with us, where applicable under standard installation conditions.
Cabinet protection under water-line cabinets
Under cabinets that hide a supply line — kitchen sink, bathroom vanities, laundry — we fit a leak-catch tray and place a sensor, so a slow under-sink drip gets caught and contained instead of quietly rotting the cabinet and floor.
Clean utility-area finish
Where your shutoff valve installs, we finish the spot properly so it's protected and looks clean — not like an exposed afterthought.
In-ground valve box — when your home needs one
Some homes are better served by setting the shutoff in a proper in-ground valve box, shielding it from weather and damage. When yours calls for it, we install the box.
Home Water Risk Report + Emergency Action Plan
A written Home Water Risk Report™ and a printed Emergency Water Action Plan™, plus a labeled main shutoff — yours to keep whether you hire us or not.
Installation documentation
A Certificate of Protection and installation documentation you can provide to your insurer or water agency when you check for savings.
Included where applicable under standard installation conditions. Unusual access, repairs to existing plumbing, hardscape restoration, permits, code corrections, and other nonstandard conditions are quoted before work begins.
You May Not Pay Full Price
Your insurer or water agency may offer savings
Discounts and rebates depend on the installed equipment, insurance carrier, policy, local water agency, available funding, and current program rules. We help you check potential eligibility and provide installation documentation. Your insurer and water agency make the final eligibility and payment decisions.
A possible insurance discount
Some California carriers, including Mercury, describe premium discounts for qualifying leak-detection or automatic-shutoff devices, with actual savings varying by carrier and policy. Your insurer confirms the amount; we provide the proof of installation.
A possible water-agency rebate
SoCal Water$mart currently describes rebates starting at $100 for qualifying flow-monitoring devices, with eligibility varying by agency, model, and available funding. We'll help you check whether your home qualifies.
We help with the steps
We help identify the program, provide the installation documentation, and assist with the application steps. Final eligibility and payment are decided by your insurer and water agency.
Discounts and rebates vary by carrier, policy, device model, and water agency, and rebate funding is limited. We don't guarantee eligibility for any specific rebate or discount; your insurer and water district confirm the exact amounts.
Your Free Assessment
The Free Whole Home Water Risk Assessment
A licensed contractor evaluates the visible water-supply risks in your home, checks water pressure, identifies likely sensor locations, reviews the main-line installation area, and prepares a practical protection plan. There is no obligation to purchase an installation.
- Visible-risk inspection Of the common water-loss points in your home
- Water pressure check High pressure quietly stresses your whole system
- Main shutoff identification We find it and label it so anyone can kill the water fast
- Recommended shutoff location The right valve and spot for your setup
- Recommended sensor placement Exactly where protection matters most
- Written Water Risk Report + Emergency Water Action Plan Yours to keep
What the assessment includes
Book your assessment and you keep all of this — whether you hire us or not:
- A visible-risk inspection of the common failure points in your home.
- A written Home Water Risk Report™ — findings, photos, and a custom protection plan.
- A printed Emergency Water Action Plan™ — what to do the moment water happens — and we find and label your main shutoff.
- An installed-price recommendation and a check for potential insurer/water-agency savings.
- Washing-machine hoses
- Angle stops under sinks & toilets
- Toilet supply lines & fill valves
- Water heater, T&P valve & drip pan
- Dishwasher & fridge/ice-maker lines
- Under-sink connections & P-traps
- Main shutoff valve (we label it)
- Water pressure & regulator
- Hose bibs & visible pipe condition
- Sump pump (where applicable)
The assessment is visual and noninvasive. It identifies visible risk factors and protection opportunities but does not guarantee that plumbing components will not fail, and does not detect concealed defects inside walls, floors, or underground. It is not an engineering, code, or certification inspection.
Get My Free Water Risk Assessment
Answer a few quick questions and we'll follow up to book your free in-person visit, where we confirm your exact, all-in price. Financing is available.
Tap the answer that fits best — it just helps us prepare.
Common Questions
Water protection, answered
Will the system work if my Wi-Fi or power goes out?
Yes. The automatic local shutoff is designed to work without WiFi, internet, or power — that's the primary protection. App alerts and remote features need connectivity, but the valve can still close on a detected leak on its own.
Does this guarantee I'll never have water damage?
No. No system can promise that water will never escape or that damage can never occur. What it does is detect leaks early and shut off the main supply automatically to help limit the amount of water released and reduce the severity of a loss.
How much does installation usually cost?
From $1,350 installed, with most homes currently estimated around $1,450–$1,500. Final pricing depends on main-line size, access, sensor count, and installation conditions, and is confirmed in writing before any work begins. Financing is available.
How many sensors does my home need?
It depends on your home's layout and the water sources you want to protect. We recommend a sensor count at your free assessment and confirm it with you before installing.
Do I need a monthly subscription?
No. The system includes a free app for self-monitoring with no subscription required. Water Protection Plus is an optional membership if you'd like professional monitoring and member benefits.
Can the system reduce my insurance premium?
It may. Some California carriers describe discounts for qualifying leak-detection or automatic-shutoff devices, but eligibility and the amount vary by carrier and policy. Your insurer makes the final decision; we provide the installation documentation.
Does my water agency offer a rebate?
Possibly. SoCal Water$mart currently describes rebates starting at $100 for qualifying flow-monitoring devices, subject to agency, model, and available funding. We'll help you check eligibility.
What happens if my main water line is difficult to access?
We'll assess it in person. Unusual access, underground or in-wall runs, or a failing existing shutoff may require additional work, which we quote before starting so there are no surprises.
How long does installation take?
Most standard installations are completed in a single visit. Your assessment will confirm the expected time for your home.
Who installs the system?
Our own licensed M. Fitts Construction crew (CSLB #1098070) — the same team that rebuilds water-damaged homes — not a subcontractor or a drop-shipped kit.
What does the free assessment include?
A visible-risk inspection, water-pressure check, main-shutoff identification and labeling, recommended shutoff and sensor placement, a written Water Risk Report and Emergency Water Action Plan, an installed-price recommendation, and a savings check. It's visual and noninvasive, with no obligation.
What is Water Protection Plus?
An optional membership ($15/month or $150/year) that adds professional dashboard monitoring with a defined notification procedure, an annual system health check, member repair/remodel discounts, and priority reconstruction scheduling. It is not an emergency-response or guaranteed-dispatch service.
What about water from the roof, drain, sewer, fire sprinkler, pool, or irrigation?
The system protects your home's domestic water supply — the water that flows through your main line. It cannot stop water from sources not controlled by that main valve, such as roof leaks, drain or sewer backups, fire-sprinkler systems, pools, or outdoor irrigation.
The best water-damage repair is the one you never need
Protect your home, your belongings, and your peace of mind — before a small leak becomes a big problem.
Get My Free Water Risk Assessment