Smoke Alarm Costs
Supply and installation:
- Battery photoelectric: $80-150 each
- Hardwired (new install): $150-250 each
- Hardwired (replacement): $100-180 each
- Interconnected wireless: $120-200 each
Typical Home Requirements
- 3 bedroom home: 3-5 alarms = $400-1,000
- 4 bedroom home: 4-6 alarms = $500-1,500
Legal Requirements
From 2022 (varies by state):
- Photoelectric type required
- One on each level
- In every bedroom
- In hallways connecting bedrooms
- Interconnected in some states
When to Upgrade
- Selling or leasing property
- Alarms over 10 years old
- Ionisation type (being phased out)
- Not meeting current regulations
Rental Properties
Landlords must ensure compliance. Annual testing recommended. Keep records of installation and maintenance.