Whole-Home Rewiring in Los Angeles:
When You Need It & What It Costs
A practical guide for LA homeowners with older homes. Learn the warning signs, the rewiring process, and typical investment required. Homes with legacy knob-and-tube should also start with our balanced inspection guide.
Published: April 2026 · Updated: October 2026
What Is Whole-Home Rewiring?
Whole-home rewiring is the process of replacing all electrical wiring, devices, and often the service panel in a home. It's typically required when a home's electrical system is outdated, unsafe, or unable to support modern electrical demands.
Common in Older LA Homes
Many LA homes built before 1970 have outdated wiring like knob-and-tube or aluminum branch circuits that pose safety risks.
Modern Electrical Demands
Today's homes use far more electricity than homes built even 30 years ago. EV chargers, AC units, and home offices strain old systems.
Fire Safety
Old wiring is a leading cause of residential fires. Rewiring brings your home up to current California Electrical Code.
Home Value
Updated electrical is a major selling point. Buyers and insurance companies favor homes with modern, code-compliant wiring.
6 Signs Your LA Home Needs Rewiring
Knob-and-Tube Wiring
If your home was built before 1950 and has never been fully rewired, you likely have knob-and-tube wiring. This is ungrounded and often unsafe by modern standards.
Aluminum Branch Wiring
Homes built 1965–1973 may have aluminum branch circuit wiring, which is now known to pose fire risks at connections. Special connectors and treatments are required.
Frequent Tripped Breakers
If your breakers trip regularly or fuses blow, your electrical system is overloaded. This is common in older homes with modern electrical demands.
Flickering or Dimming Lights
Persistent flickering or dimming when appliances turn on indicates wiring issues, undersized circuits, or loose connections.
Burning Smell or Scorched Outlets
Any burning smell, warm outlets, or scorch marks around outlets are serious warning signs requiring immediate electrician inspection.
Two-Prong Outlets (No Ground)
If your home still has ungrounded two-prong outlets, your wiring is outdated. Modern code requires grounded three-prong outlets throughout.
What to Expect During Whole-Home Rewiring
Licensed electrician inspects your home's wiring, panel, devices, and grounding. You'll receive a detailed report and scope of work.
Permits are pulled from LADBS. We coordinate utility shutoffs and plan the rewiring sequence to minimize disruption.
Walls may need to be opened to access wiring. We work room-by-room and can coordinate with drywall and paint contractors.
New wires, boxes, and circuits are installed. New circuits are added for high-demand areas like kitchens, EV charging, and home offices.
LADBS inspects the rough-in wiring before walls are closed. We schedule and attend this inspection.
Outlets, switches, light fixtures, and cover plates are installed once walls are closed and finished.
LADBS performs final inspection. We close out permits and provide documentation of the completed work.
Whole-Home Rewiring Costs in Los Angeles
| Home Size | Typical Range |
|---|---|
| Small (1,000 sq ft) | $8,000–$15,000 |
| Medium (1,500–2,000 sq ft) | $12,000–$25,000 |
| Large (2,500–3,500 sq ft) | $20,000–$40,000 |
| Very Large (4,000+ sq ft) | $35,000–$60,000+ |
Costs vary based on home size, accessibility, number of circuits, and whether walls need to be opened. Free detailed estimates provided for all rewiring projects.
Cost Factors That Move Your Quote
The table above prices the common case. These conditions, most of them common in LA's older housing stock, are what push a quote above it:
- Knob-and-tube wiring — adds roughly 30–50% over the baseline, because every run must be fished out of undocumented pre-war cavities.
- Aluminum branch wiring (1965–1973 homes) — adds roughly 20–40%, with special connectors at every termination. Details in our aluminum wiring guide.
- Limited access (finished walls, tight crawlspaces) — adds roughly 15–30%.
- Slab foundations — adds roughly 20–35%, since ground-level circuits may need routing overhead.
- Drywall repair after the rough-in inspection — $2,000–$8,000 depending on how much wall gets opened.
- LADBS permit and inspection fees — $300–$800, covering the rough-in, trim, and final inspection phases.
The full breakdown by home size lives in the whole-home rewiring cost guide.
How Long Does a Whole-Home Rewire Take?
A rewire is a multi-day project with an LADBS inspection in the middle of it, not a one-visit job:
- Smaller homes (under 1,200 sq ft) with good attic and crawlspace access: often completed in 3 to 5 days.
- Larger homes (over 3,000 sq ft) or complex construction — multi-story, finished spaces, slab foundations, historic construction — typically 7 to 14 days.
The sequence that fills those days: permit and planning with LADBS, rough-in wiring, the rough-in inspection (the inspector reviews the wiring before walls are closed), trim and finish, then final inspection and sign-off. You get a detailed written estimate with the full circuit list before any of it starts — the whole process is on the whole-home rewiring service page.
Ready to Modernize Your LA Home's Wiring?
Whether you have knob-and-tube, aluminum wiring, or just an outdated system, AMY Electric's licensed team can assess your home and provide a detailed plan.
☎ Call (818) 302-5614 Free EstimateFrequently Asked Questions About Whole-Home Rewiring
How do I know if my LA home needs rewiring? ▾
What is included in a whole home rewire? ▾
Will rewiring damage my walls? ▾
How long does a whole-home rewire take? ▾
Does a whole-home rewire need a permit in Los Angeles? ▾
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Schedule a Rewiring Assessment Today
Get a detailed, no-obligation estimate for whole-home rewiring from AMY Electric's licensed, insured team.
☎ Call (818) 302-5614 Free EstimateAmram is a California-licensed C-10 electrical contractor (License #981578) with 15+ years of hands-on experience and EVITP certification (#4051604) for EV charging infrastructure. He founded AMY Electric in 2012. Verify the license: CSLB license lookup.