Smoke Detector Installation Cost Calculator2026
Estimate smoke and CO detector installation costs by detector count, detector type, battery or hardwired scope, interconnect requirements, and labor with regional pricing.
Project Details
Total Estimated Cost
$718
Cost Breakdown
Cost Distribution
Data sources: Base costs derived from national industry cost surveys and contractor pricing data, adjusted with BLS inflation indices, Census housing/income signals, and FRED CSV fallback when BLS data is temporarily unavailable. Latest index refresh: June 2026.
Disclaimer: Estimates are approximate and for informational purposes only. Actual costs vary based on project complexity, contractor rates, material availability, and local market conditions. Always obtain multiple quotes from licensed contractors before starting a project.
Typical Project Cost by Detector Type (each)
National average pricingSame default project size (default scope), priced across each material tier.
| Tier | Material rate | Total project | Installed per detector |
|---|---|---|---|
| Battery Smoke Alarm | $24.93 | $479 | $80 |
| Smoke + CO Combo Alarm | $64.81 | $718 | $120 |
| Hardwired Interconnect Alarm | $120 | $1,049 | $175 |
| Smart / Connected Alarm | $179 | $1,403 | $234 |
Material rates reflect the latest BLS construction PPI adjustment. Installed totals include labor and supplies but exclude permits and any tear-out beyond the calculator's default scope.
Recent Cost Trends
Wholesale construction prices typically lead homeowner-facing quotes by 2–4 months. Use the trend below to decide whether to pull a project forward or wait for the next reading.
Residential Construction PPI — Trailing 12 Months
BLS series PCU236211236211, single-family construction producer prices.
200.6
+4.0% vs May 25
The PPI is the wholesale price of materials and labor that contractors pay, before margin. A rising index usually flows into homeowner quotes within 2–4 months. Use this trend to decide whether to pull a project forward or wait.
Smoke Detector Installation Cost by City
Browse all 202 cities by state
Alaska
Arkansas
California
Connecticut
Delaware
District of Columbia
Florida
Hawaii
Idaho
Illinois
Indiana
Kansas
Kentucky
Maine
Maryland
Minnesota
Mississippi
New Hampshire
New Jersey
New Mexico
North Carolina
North Dakota
Oklahoma
Pennsylvania
Rhode Island
South Carolina
South Dakota
Texas
Vermont
West Virginia
Wyoming
Typical Cost Snapshot
For a typical smoke detector installation scenario in the national baseline, this calculator currently models a total around $718, or about $120 per detector.
This market is currently modeled close to the national baseline, so project swings are more likely to come from scope and finish choices than from regional pricing alone.
Smoke-detector installation in many homes often reflects detector count, interconnect requirements, and whether the project is a battery replacement program or a more code-driven hardwired upgrade.
Low / Mid / High Project Scenarios
Low Scenario
$165$55 per detector
A few battery smoke alarms in easy-access locations.
Mid Scenario
$988$165 per detector
A common whole-home smoke and CO replacement using existing hardwired locations.
High Scenario
$3,605$360 per detector
A larger code-upgrade project adding smart hardwired detectors at new locations.
What Changes the Estimate Most?
- Detector type and wiring method usually create the biggest price spread between simple battery alarms and hardwired smart systems.
- Interconnect and code-driven layout upgrades are the main reasons a detector project expands beyond a basic replacement visit.
- Ceiling access matters most in larger homes, stairwells, and multi-level layouts where setup time increases.
When This Calculator Is Less Accurate
This calculator is less accurate when the project includes major code-triggered rewiring, whole-home alarm integration, commercial fire systems, or extensive ceiling repair beyond standard detector installation.
Use the result as a budgeting starting point, then validate with local contractor quotes if the scope includes specialty materials, hidden damage, or permit-driven design changes.
How Much Does Smoke Detector Installation Cost?
Smoke and CO detector installation often costs about $50-300 per detector depending on whether the units are battery-powered or hardwired, whether interconnect work is required, and how easy the ceilings are to access.
Cost Factors:
- Detector type matters because simple battery alarms are cheaper than smart or hardwired smoke / CO combo units
- Power and wiring scope can materially raise cost when new hardwired locations are added instead of swapping existing alarms
- Interconnect requirements affect price because some homes need linked alarms or more complete code-driven layouts
- Access conditions matter in taller homes or stairwells where setup and ladder work take longer
- Local code expectations often drive detector count and placement more than homeowners first assume
Frequently Asked Questions (3)
How much does smoke detector installation cost?
Smoke detector installation often lands around $50-300 per detector depending on the alarm type, wiring, and interconnect scope. Battery alarms are cheaper than new hardwired or smart connected systems.
Are hardwired smoke detectors more expensive?
Yes, usually. Hardwired detectors cost more because they need power connections and sometimes interconnect wiring, but they are often required or preferred in many whole-home upgrade situations.
Do smoke detectors need to be interconnected?
In many homes and remodel situations, yes or at least it is strongly recommended by code. Interconnection means when one alarm activates, the others sound too, which improves whole-house warning coverage.
Data sources & methodology
Estimates blend national base costs, the BLS residential construction PPI, regional and direct metro CPI series, BLS OEWS state labor wages, and U.S. Census ACS housing signals. Market data refreshed June 2026. Expect ±15–30% spread vs an actual contractor quote.
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