How Much Does Whole-House Rewire Cost in Shafter, CA? (2026)

Average Cost

$37,960–$76,180

Materials

$25,000–$52,300

Labor (Kern County)

$4,200–$6,300

A whole-house rewire replaces all outdated wiring (knob-and-tube, cloth-covered Romex, or aluminum branch circuits) with modern 12/2 and 14/2 NM-B copper wiring to meet current California Electrical Code. Many Sacramento-area homes built before 1970 still have knob-and-tube wiring that is a fire hazard and prevents proper insulation. The project includes running new wiring from the panel to every outlet, switch, and light fixture; upgrading receptacles to tamper-resistant and GFCI/AFCI-protected circuits; and patching drywall access holes. Most 3-bedroom homes are completed in 3-5 days.

NorCal's older housing stock (many homes built 1940-1970) frequently contains hazardous wiring. The region's push toward electrification makes adequate modern wiring essential for adding heat pumps, EV chargers, and induction cooktops.

Shafter is located in Kern County (Kern County). Agricultural community northwest of Bakersfield with affordable newer subdivisions. The local utility provider is PG&E.

Cost Calculator

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City

Circuits

Materials Included

NM-B Cable (12/2 & 14/2, per 250 ft roll)120 roll

$7,800–$14,400

Electrical Boxes (old-work, single & double gang)800 each

$1,600–$4,800

Tamper-Resistant Receptacles (TR, 15A & 20A)600 each

$1,200–$3,000

Switches (single-pole, 3-way, dimmer)300 each

$900–$3,600

AFCI/GFCI Combination Breakers300 each

$10,500–$19,500

Drywall Patch Kits (access holes)200 kit

$3,000–$7,000

Labor

Licensed Electrician (Journeyman)30h @ $95–$145/hr

$2,850–$4,350

Electrician's Apprentice30h @ $45–$65/hr

$1,350–$1,950

Contractor Markup30%

0%Avg 30%100%

Materials

$25,000–$52,300

Labor

$4,200–$6,300

Markup

$8,760–$17,580

Estimated Total Cost

$37,960 – $76,180

$1,898–$3,809 per unit

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California Building Code

California Electrical Code (NEC 2023) requires AFCI protection on all 15A and 20A branch circuits in dwelling unit living areas, bedrooms, hallways, closets, and similar spaces. GFCI protection is required in kitchens, bathrooms, garages, outdoors, laundry, and within 6 feet of any sink. Tamper-resistant receptacles are required throughout.

Project Timeline

Assessment & Circuit Mapping

2-4 hrs

Map all existing circuits, identify wiring types and hazards (knob-and-tube, aluminum, or damaged insulation), count outlets and fixtures, and plan the new circuit layout per NEC requirements.

Access & Old Wire Removal

1-2 days

Cut access holes in walls, ceilings, and floors at strategic points. Remove old wiring from accessible runs. Abandon in-wall wiring that is inaccessible by disconnecting it from the panel and cutting it at every box.

New Wiring Installation

2-4 days

Run new NM-B cable from the panel to every outlet, switch, and fixture location through attics, crawl spaces, and wall cavities. Install new electrical boxes, receptacles, and switches. Add circuits as needed for modern code requirements.

Connections, Testing & Inspection

1-2 days

Make all connections at the panel with AFCI/GFCI breakers, test every circuit for proper voltage, polarity, and ground. Patch drywall access holes. Schedule the rough and final electrical inspections.

Materials Breakdown

Material	Qty	Unit	Unit Cost	Total
NM-B Cable (12/2 & 14/2, per 250 ft roll)	120	roll	$65–$120	$7,800–$14,400
Electrical Boxes (old-work, single & double gang)	800	each	$2–$6	$1,600–$4,800
Tamper-Resistant Receptacles (TR, 15A & 20A)	600	each	$2–$5	$1,200–$3,000
Switches (single-pole, 3-way, dimmer)	300	each	$3–$12	$900–$3,600
AFCI/GFCI Combination Breakers	300	each	$35–$65	$10,500–$19,500
Drywall Patch Kits (access holes)	200	kit	$15–$35	$3,000–$7,000

Whole-House Rewire in Shafter — FAQ

How much does a whole-house rewire cost in Sacramento?+

A full rewire for a 3-bedroom, 2-bath NorCal home typically costs $8,000-$15,000. Larger homes, two-story layouts, or homes with finished basements cost more due to additional access challenges. The price includes all wire, devices, breakers, and labor.

How do I know if my house needs rewiring?+

Rewiring is needed if your home has knob-and-tube wiring (pre-1950), cloth-covered Romex (1950s-60s), aluminum branch circuits (1965-1975), or a Federal Pacific/Zinsco panel. Other signs include flickering lights, warm outlets, and frequent breaker trips.

Will rewiring damage my walls?+

Our electricians minimize wall damage by routing wire through attics, crawl spaces, and inside wall cavities. Strategic access holes (typically 4x4 inches) are cut and patched with drywall compound. Expect 10-20 access holes in a typical rewire.

How long does a whole-house rewire take?+

Most single-story homes are completed in 3-5 days. Two-story homes take 5-7 days. You'll have power each evening — we prioritize keeping essential circuits live during the work.

Does insurance require rewiring for old wiring?+

Many insurance companies in NorCal will not insure or renew policies on homes with knob-and-tube wiring or Federal Pacific panels. Rewiring resolves the issue and can reduce your premium by 10-20%.