How Much Does Smoke Detector Installation Cost in Missouri?
Missouri pricing is below the national average. Updated for 2026.
Smoke Detector Installation Pricing in Missouri
In Missouri, the average cost for smoke detector installation is $348 per home, which is 13% lower than the national average of $400. Most Missouri residents pay between $174 and $696.
Missouri benefits from a lower cost of living than many states, resulting in more affordable pricing for smoke detector installation. This makes it one of the more budget-friendly states for this service.
Professional smoke detector installation ensures proper placement, wiring, and interconnection of smoke and carbon monoxide detectors throughout your home. Hardwired, interconnected systems ensure all alarms sound when one is triggered.
Missouri vs National Average
What Affects Smoke Detector Installation Cost in Missouri?
Type
Battery-only (DIY): $15-$40 each. Hardwired with battery backup: $30-$80 each + $50-$100 labor each. Smart (Nest Protect): $100-$130 each
Installation
Replacing existing hardwired: $50-$75 per unit. New hardwired installation: $100-$200 per unit including wiring
Full Home
Average 3-bedroom home needs 6-8 detectors. Full hardwired install: $400-$800 total
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Top-Rated Smoke Detector Installation Pros in Missouri
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💡 Tips to Save on Smoke Detector Installation in Missouri
- 1.Battery-only detectors ($15-$40 each) are easy to DIY — no electrician needed
- 2.Buy detectors with 10-year sealed batteries to avoid annual battery changes
- 3.Smart detectors (Nest, First Alert) cost more upfront ($100-$130) but send phone alerts
- 4.Code requires detectors in every bedroom, outside sleeping areas, and on every level
📈 Smoke Detector Installation in Missouri Cost Trends (2020–2024)
Prices have increased +17.6% over the last 5 years
| Year | National Avg | YoY Change |
|---|---|---|
| 2020 | $296 | — |
| 2021 | $308 | +4.1% |
| 2022 | $328 | +6.5% |
| 2023 | $337 | +2.7% |
| 2024 | $348 | +3.3% |
Based on national averages adjusted for annual inflation. Actual costs vary by location and project scope.
💬 What Did You Pay?
Real costs reported by homeowners for Smoke Detector Installation in Missouri
Recent Reports
Frequently Asked Questions
How many smoke detectors do I need?
At minimum: one inside each bedroom, one outside each sleeping area, and one on every level including the basement. A typical 3-bedroom, 2-story home needs 6-8 detectors.
How often should smoke detectors be replaced?
Every 10 years regardless of type. The sensors degrade over time and become unreliable. Check the manufacturing date on the back of the unit. Replace batteries annually (unless sealed 10-year type).
Smoke Detector Installation Cost in Other States
Related Cost Guides for Missouri
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