Lights Flickering in House

Lights flickering? Learn what causes it, when it's dangerous, DIY checks, and electrician costs ($100–$400).

Typical repair cost: $100–$400 · DIY difficulty: Easy · About 5–15 minutes.

What usually causes it

• Loose bulb
• Faulty light switch
• Loose wiring
• Overloaded circuit
• Utility company issue
• Failing main breaker

What you need

• Replacement bulb

How to fix it yourself

1. Tighten the bulb — a loose connection is the most common cause
2. Try a different bulb to rule out a failing one
3. Check if flickering is isolated to one fixture or the whole house
4. If one fixture: toggle the switch a few times — a faulty switch may need replacement
5. If whole-house: check the breaker panel for a warm or buzzing breaker
6. Ask neighbors if they experience the same — could be a utility supply issue

When to call a pro

If the whole house flickers, breakers feel warm, you hear buzzing, or see scorch marks — call an electrician immediately. This could be a fire hazard.

Get a fixed price from a local pro