Electrical Remodel Guide for Boise Homes
Everything Boise homeowners need to know about electrical upgrades during a remodel — panel sizing, wiring types, NEC code requirements, room-by-room circuit planning, EV charger prep, and real 2026 costs.
Electrical work is the invisible backbone of every remodel. You can choose stunning tile, perfect cabinets, and the ideal paint color, but if the electrical system behind the walls cannot handle modern demands, the entire project is compromised. Flickering lights, tripped breakers, and overloaded circuits are symptoms of an electrical system that has not kept pace with how Boise homeowners use their homes today.
This guide covers every electrical consideration during a Boise remodel: whether your panel needs upgrading, when old wiring must be replaced, what the NEC 2020 code requires, how to plan circuits for kitchens and bathrooms, how to prepare for EV charging and smart home technology, and what everything costs in the Boise market. Whether you are remodeling a 1940s North End bungalow or updating a 2005 Southeast Boise home, this is the electrical roadmap you need.
Common Electrical Upgrades During a Boise Remodel
A remodel is the best time to upgrade electrical because walls, ceilings, and floors are already opened up. Retrofitting electrical after finishes are installed costs two to three times more due to access, patching, and paint work. Here are the upgrades we recommend evaluating during any Boise remodel.
Panel Upgrade (100A to 200A)
Most pre-2000 Boise homes have 100-amp or 150-amp panels that cannot support modern appliances, HVAC, EV chargers, and remodel additions. 200-amp is the current standard.
Circuit Additions
New rooms, appliances, and fixtures need dedicated circuits. Kitchen remodels alone typically add 6 to 10 new circuits for appliances, lighting, and outlets.
GFCI & AFCI Outlets
NEC 2020 requires GFCI protection in kitchens, bathrooms, garages, basements, outdoors, and laundry rooms. AFCI protection is required on all bedroom, living area, and kitchen circuits.
Dedicated Appliance Circuits
Refrigerators, dishwashers, disposals, microwaves, washers, and dryers each require their own dedicated circuit to prevent overloads and tripped breakers.
Recessed Lighting Circuits
Modern lighting plans use multiple circuits with dimmer controls. Budget one circuit per 8 to 10 recessed lights, with separate circuits for task and accent lighting.
EV Charger Pre-Wire
Running 6-gauge copper wire to the garage for a 50-amp, 240V Level 2 charger. Pre-wiring during a remodel costs a fraction of retrofitting later.
Whole-House Surge Protection
A panel-mounted surge protector ($200 to $500 installed) protects all electronics, smart home devices, and appliances from voltage spikes. Essential as homes become more connected.
Smoke & CO Detector Interconnection
NEC and Idaho code require interconnected, hardwired smoke and carbon monoxide detectors in all bedrooms, hallways, and on each level. Remodels trigger compliance upgrades.
Wiring Types in Boise Homes: When to Rewire
The type of wiring in your home determines whether you need a simple update or a full rewire. Boise's housing stock spans over a century, and each era brought a different wiring standard.
Knob-and-Tube Wiring (Pre-1950s)
Common in Boise's North End, Hyde Park, and Harrison Boulevard neighborhoods. Porcelain knobs and tubes route individual hot and neutral wires through framing with no ground wire. The wiring itself is not inherently dangerous if undisturbed, but it was never designed for modern electrical loads, cannot be grounded, and becomes a fire hazard when insulation is blown over it (the wiring relies on open-air cooling).
Recommendation: Full rewire during any remodel that opens walls. Most Idaho insurance companies will not insure homes with active knob-and-tube. Budget $8,000 to $20,000 for a full-home rewire depending on size and accessibility.
Aluminum Wiring (1960s–1970s)
Used widely during the copper shortage, aluminum branch circuit wiring appears in many Boise homes built between 1965 and 1975, including subdivisions in West Boise and Garden City. Aluminum oxidizes at connection points, creating high-resistance junctions that overheat. Homes with aluminum wiring are 55 times more likely to have fire-hazard conditions at outlets and switches according to the CPSC.
Recommendation: Remediate all connections with COPALUM crimp connectors or AlumiConn connectors ($2,000 to $6,000), or full copper rewire ($8,000 to $15,000) during a remodel. Never use standard wire nuts on aluminum-to-copper connections.
Copper Wiring with Romex (1980s–Present)
NM-B (Romex) copper wiring with a ground conductor is the current standard. Homes built after 1980 in Boise generally have copper wiring that does not require replacement. However, older copper installations may have undersized circuits (14-gauge wire on 20-amp breakers), missing ground wires, or Federal Pacific or Zinsco panels that should be replaced.
Recommendation: Evaluate panel capacity and circuit count. Existing copper wiring is typically fine, but you may need to add circuits, upgrade the panel, and install GFCI/AFCI protection to meet NEC 2020.
Electrical Panel Sizes: What Your Boise Home Needs
Your electrical panel is the central hub that distributes power to every circuit in your home. When the panel cannot keep up with demand, breakers trip, circuits overload, and you cannot add the circuits your remodel requires. Here is how to determine the right panel size.
| Panel Size | Best For | Typical Circuits | Upgrade Cost |
|---|---|---|---|
| 100 Amp | Small homes under 1,500 sq ft, gas heat, no EV | 20-24 spaces | Existing (replace only: $1,800-$2,500) |
| 150 Amp | Mid-size homes, gas heat/water, moderate appliances | 24-30 spaces | $2,200-$3,200 |
| 200 Amp | Most Boise remodels — current standard for 1,500-3,500 sq ft | 30-42 spaces | $2,500-$4,000 |
| 400 Amp | Large homes 3,500+ sq ft, electric heat, EV charger(s), shop | 42-60+ spaces | $5,000-$8,000 |
The 200-Amp Rule for Boise Remodels
If you are remodeling and your home has a 100-amp panel, upgrade to 200-amp. The cost difference between 150-amp and 200-amp is minimal ($300 to $500), but 200-amp gives you room for future additions: EV chargers, heat pumps, induction ranges, hot tubs, and workshop circuits. Idaho Power will need to upgrade the service drop and meter base for a 200-amp upgrade, which they coordinate directly with your electrician. Plan two to four weeks for Idaho Power scheduling.
NEC 2020 Code Requirements for Idaho
Idaho has adopted the 2020 National Electrical Code (NEC) through the Idaho Division of Occupational and Professional Licenses. Any electrical work performed during a remodel must meet these requirements. Key provisions that affect residential remodels include the following.
AFCI Protection (NEC 210.12)
Arc-fault circuit interrupter protection is required on all 15-amp and 20-amp branch circuits supplying outlets and devices in kitchens, family rooms, dining rooms, living rooms, parlors, libraries, dens, bedrooms, sunrooms, recreation rooms, closets, hallways, laundry areas, and similar rooms. AFCI breakers cost $30 to $50 each versus $5 to $10 for standard breakers.
GFCI Protection (NEC 210.8)
Ground-fault circuit interrupter protection is required for all outlets in kitchens (including dishwasher and disposal), bathrooms, garages, outdoors, basements, crawl spaces, laundry areas, and within 6 feet of any sink. GFCI outlets or breakers must be installed at all these locations during a remodel.
Tamper-Resistant Receptacles (NEC 406.12)
All 15-amp and 20-amp receptacles in dwelling units must be tamper-resistant (TR). These have built-in shutters that prevent children from inserting objects. Required in all new and remodeled outlets, not just child-accessible locations.
Smoke & CO Detectors (NEC 760 / Idaho Residential Code)
Hardwired, interconnected smoke detectors are required in every bedroom, outside each sleeping area, and on every level. Carbon monoxide detectors are required on every level with a fuel-burning appliance or attached garage. Remodels that involve new circuits or structural changes trigger full compliance.
Kitchen Outlet Spacing (NEC 210.52(C))
Countertop outlets must be placed so that no point along the countertop is more than 24 inches from an outlet. Islands and peninsulas over 12 inches wide and 24 inches long require at least one outlet. All countertop outlets must be on 20-amp small appliance branch circuits (SABCs).
Bathroom Circuit Requirements (NEC 210.11(C)(3))
Each bathroom must have at least one dedicated 20-amp circuit for the receptacle outlet(s). This circuit can serve outlets in multiple bathrooms but cannot serve any other room. All bathroom outlets must be GFCI protected.
Electrical Remodel Costs in Boise (2026)
Electrical costs vary based on panel capacity, wiring condition, number of new circuits, and accessibility. These are real ranges from Boise-area projects, including permits, materials, and licensed electrician labor.
| Project | Cost Range | Notes |
|---|---|---|
| Panel upgrade (100A to 200A) | $2,500 - $4,000 | Includes new panel, breakers, permit, Idaho Power coordination |
| Panel replacement (same amperage) | $1,800 - $2,500 | Replace outdated panel (Federal Pacific, Zinsco) with modern equivalent |
| Full-home rewire (3BR/2BA) | $8,000 - $15,000 | Copper NM-B throughout, new panel, all new outlets/switches, permit |
| Rewire per room | $1,500 - $3,000 | New circuits, outlets, switches, and wiring for one room during remodel |
| New outlet installation | $150 - $350 each | Standard outlet on existing circuit; new circuit adds $300-$600 |
| New lighting circuit (6-10 recessed) | $800 - $2,000 | Wire, breaker, junction boxes, dimmer switch; fixtures extra |
| Dedicated appliance circuit | $300 - $600 | 20-amp circuit for fridge, dishwasher, disposal, microwave, etc. |
| EV charger circuit (50A/240V) | $800 - $2,000 | Panel to garage; $300-$800 if pre-wired during remodel |
| GFCI outlet installation | $120 - $250 each | Outlet plus labor; replacing standard outlet with GFCI |
| Whole-house surge protector | $200 - $500 | Panel-mounted Type 2 SPD; protects all circuits |
| Smoke/CO detector interconnection | $400 - $1,200 | Hardwired, interconnected units throughout home (6-10 detectors) |
| Aluminum wiring remediation | $2,000 - $6,000 | COPALUM or AlumiConn at all connections; full rewire costs more |
Bundling saves money. Doing multiple electrical upgrades during one remodel visit reduces total cost by 20% to 30% compared to individual projects. A panel upgrade plus kitchen rewire plus EV pre-wire done together during a kitchen remodel saves $1,500 to $3,000 versus scheduling each separately.
Kitchen Electrical Requirements
The kitchen is the most electrically demanding room in your home. A modern kitchen remodel typically requires 8 to 12 circuits, making it the single biggest driver of electrical upgrade costs. Here is what NEC 2020 requires and what we recommend for a complete Boise kitchen remodel.
Refrigerator(Code Required)
Dedicated 20A/120V circuit
Dishwasher(Code Required)
Dedicated 20A/120V circuit, GFCI protected
Garbage Disposal(Code Required)
Dedicated 20A/120V circuit, GFCI protected
Microwave (built-in/over-range)(Code Required)
Dedicated 20A/120V circuit
Countertop SABC #1(Code Required)
20A/120V for countertop outlets, GFCI protected
Countertop SABC #2(Code Required)
20A/120V for countertop outlets, GFCI protected
Electric Range/Oven(Code Required)
50A/240V dedicated circuit (if electric)
Ambient Lighting(Recommended)
15A or 20A circuit with dimmer, AFCI protected
Under-Cabinet / Task Lighting(Recommended)
15A circuit with dedicated dimmer
Wine Cooler / Beverage Fridge(Recommended)
Dedicated 15A or 20A circuit
Bathroom Electrical Requirements
Bathrooms combine water and electricity, making proper wiring critical for safety. NEC 2020 has strict requirements for bathroom remodeling projects, and Boise's state electrical inspectors enforce them rigorously.
Dedicated 20A Outlet Circuit
At least one 20-amp, GFCI-protected outlet circuit per bathroom. This circuit can serve outlets in multiple bathrooms but cannot serve lighting, fans, or outlets in other rooms. Required by NEC 210.11(C)(3).
Exhaust Fan Circuit
Dedicated circuit for the exhaust fan, or a shared circuit with bathroom lighting (permitted by code). We recommend a separate circuit with a timer or humidity-sensing switch for optimal moisture control. Idaho code requires mechanical ventilation in all bathrooms without an operable window.
Heated Floor Circuit
Electric radiant floor mats require a dedicated circuit (typically 15A or 20A depending on square footage) with GFCI protection and a programmable thermostat. A standard 50 sq ft bathroom floor mat draws 5 to 7 amps. Popular in Boise master bath remodels given our cold winter mornings.
Vanity Lighting
While vanity lighting can share a general lighting circuit, best practice is a separate circuit with dimmer control. All bathroom lighting fixtures within shower and tub zones must be rated for wet or damp locations per NEC.
Outlet Placement
At least one GFCI outlet within 36 inches of each sink basin. Outlets must be placed at least 36 inches from the bathtub or shower edge (or outside the shower zone). Tamper-resistant receptacles required at all locations.
Smart Home Electrical Preparation
A remodel is the only practical time to install the electrical infrastructure that smart home technology requires. Retrofitting structured wiring after walls are closed costs five to ten times more. Even if you are not installing smart devices now, pre-wiring gives you options for the future.
Neutral Wires at Every Switch Box
$0 extra during remodelMost smart switches (Lutron, Leviton, GE) require a neutral wire. Older Boise homes often have switch boxes with only hot and ground. During a remodel, running a neutral to every switch box is essentially free since walls are open.
Structured Wiring (Cat6A Ethernet)
$50-$100 per runRun Cat6A cable to every room, home office, entertainment center, and network closet. Wi-Fi mesh access points, security cameras, and streaming devices all benefit from hardwired connections. Designate one central location (closet or utility room) as the network hub.
Low-Voltage Conduit Pathways
$30-$75 per runInstall empty conduit runs between key locations (attic to basement, closet to exterior walls) for future cable pulls. Costs almost nothing during construction but saves hundreds per run later.
Dedicated Smart Home Circuit
$300-$500A dedicated 15A circuit for your network closet (router, switches, NAS, smart hub) with battery backup outlet. Keeps your smart home running during power fluctuations without competing with other loads.
Idaho Electrical Licensing Requirements
Idaho regulates electrical work through the Division of Occupational and Professional Licenses (DOPL), which replaced the former Division of Building Safety (DBS) for electrical licensing. Understanding the licensing structure helps you verify that your electrician is properly qualified.
Master Electrician
Can design, plan, and supervise all electrical installations. Required to hold an electrical contracting license. Must have 2 years as a journeyman plus pass the master exam.
Journeyman Electrician
Can perform all electrical installation and repair work under a master electrician's license. Must complete 8,000 hours (approximately 4 years) of supervised apprenticeship plus pass the journeyman exam. This is the person who does the hands-on work in your home.
Electrical Contractor
A business license that allows a company to offer electrical services. Must employ or be a licensed master electrician. Verify contractor status through the DOPL license search before hiring.
Homeowner Exemption
Idaho Code 54-1016 allows homeowners to perform electrical work on their own primary residence without a license. You must do the work yourself (not hire unlicensed help), pull a permit, and pass inspection. Does not apply to rental properties, new construction for sale, or commercial work.
Boise Permit Process for Electrical Work
Electrical permits in Ada County are issued by the Idaho DOPL (not the city). Your electrician submits the application, and a state electrical inspector performs the inspection. The permit fee for residential work is typically $75 to $200. Turnaround for inspection scheduling is usually 2 to 5 business days. For Idaho Power service upgrades (meter base, service drop), coordinate with Idaho Power's service planning department at least 2 to 4 weeks in advance. Idaho Power does not charge for standard residential service upgrades from 100A to 200A, but the homeowner pays for the meter base, weatherhead, and service entrance cable.
Boise-Specific Electrical Considerations
North End & Historic Homes
Boise's North End, Harrison Boulevard, and Warm Springs Avenue neighborhoods contain many pre-1950 homes with knob-and-tube wiring, fuse boxes, and undersized 60-amp service. Remodeling these homes almost always requires a complete electrical upgrade. Historic district homes may have additional exterior requirements (conduit routing, meter placement) that need approval from Boise's Historic Preservation Commission.
Idaho Power Service Upgrades
Idaho Power provides electrical service to the Boise metro area. For panel upgrades from 100A to 200A, Idaho Power must upgrade the service drop (overhead or underground) and install a new meter base. Standard residential upgrades are typically no-charge from Idaho Power, but the homeowner pays for the meter base, mast, weatherhead, and service entrance cable (installed by your electrician). Schedule Idaho Power coordination at the start of your project to avoid delays, as their scheduling queue runs 2 to 4 weeks during the busy spring and summer remodeling season.
Federal Pacific & Zinsco Panels
Many Boise homes built in the 1960s through 1980s have Federal Pacific Electric (FPE) Stab-Lok or Zinsco panels. These panels have a documented history of breakers failing to trip during overloads and short circuits, creating serious fire hazards. If your home has either brand, replace the panel during your remodel regardless of whether you are upgrading amperage. Panel replacement costs $1,800 to $2,500 and is one of the highest-value safety upgrades you can make.
EV Charging & Idaho's Growing EV Market
Idaho's EV registration has grown over 40% annually, and Boise leads the state in adoption. A Level 2 home charger (240V, 40A continuous) is the practical minimum for daily EV use, providing 25 to 30 miles of range per hour of charging. Pre-wiring during a remodel is the most cost-effective approach. Consider installing the circuit on the side of your panel closest to the garage to minimize wire run length and cost.
Frequently Asked Questions
How much does an electrical panel upgrade cost in Boise?
An electrical panel upgrade in Boise typically costs $1,800 to $4,500 depending on the scope. Upgrading from 100-amp to 200-amp service (the most common upgrade during remodels) runs $2,500 to $4,000, including the new panel, breakers, labor, permit, and inspection. If Idaho Power needs to upgrade the service drop or meter base, add $500 to $1,500. A simple panel replacement (same amperage, new panel) costs $1,800 to $2,500. Upgrading to 400-amp service for large homes with EV chargers and electric heating runs $5,000 to $8,000. All panel work in Boise requires an electrical permit and inspection through the Idaho Division of Occupational and Professional Licenses.
Does my Boise home need rewiring if it has aluminum wiring?
Not necessarily a full rewire, but aluminum wiring (common in 1960s and 1970s Boise homes) requires remediation. Aluminum expands and contracts more than copper, causing loose connections that create fire hazards at outlets, switches, and splices. Options include a full copper rewire ($8,000 to $15,000 for a typical home), COPALUM crimp connectors at every junction ($3,000 to $6,000, the preferred repair method per the CPSC), or AlumiConn connectors ($2,000 to $4,000, an approved alternative). A licensed electrician should inspect all connections and recommend the best approach. Insurance companies in Idaho increasingly require remediation of aluminum wiring before issuing or renewing policies.
Do I need a permit for electrical work during a Boise remodel?
Yes, almost all electrical work in Boise requires a permit. This includes panel upgrades, new circuits, rewiring, adding outlets or light fixtures on new circuits, and EV charger installation. Minor work like replacing a light fixture on an existing circuit or swapping a switch or outlet (like-for-like replacement) typically does not require a permit. Idaho law allows homeowners to do their own electrical work on their primary residence without a license, but you still must pull a permit and pass inspection. The permit fee for residential electrical work in Ada County runs $75 to $200 depending on the scope. All permitted work requires inspection by a state electrical inspector.
What electrical upgrades should I make during a kitchen remodel in Boise?
A kitchen remodel is the ideal time to upgrade electrical because walls are already open. At minimum, you need dedicated 20-amp circuits for the refrigerator, dishwasher, garbage disposal, and microwave, plus two 20-amp small appliance branch circuits (SABCs) for countertop outlets. NEC 2020 also requires GFCI protection for all kitchen outlets (including the dishwasher and disposal circuits as of recent code cycles), AFCI protection on all 15-amp and 20-amp circuits, and tamper-resistant receptacles. Additional upgrades to consider: a 50-amp circuit for an electric range, under-cabinet lighting circuit with dimmer, in-cabinet and toe-kick LED circuits, a dedicated circuit for a wine cooler or beverage fridge, and a 20-amp circuit for a countertop appliance garage. Budget $2,500 to $6,000 for comprehensive kitchen electrical during a remodel.
Can I do my own electrical work in Idaho as a homeowner?
Idaho law (Idaho Code 54-1016) allows homeowners to perform electrical work on their own primary residence without holding an electrical license. However, there are important limits: you must personally do the work (not hire an unlicensed person), you must still obtain an electrical permit, and all work must pass inspection by a state electrical inspector. The homeowner exemption does not apply to rental properties, commercial buildings, or work performed for compensation. For anything beyond basic outlet swaps or fixture replacements, we strongly recommend hiring a licensed journeyman or master electrician. Electrical mistakes create fire and shock hazards that may not become apparent for years, and improper work can void your homeowner insurance coverage.
Should I pre-wire for an EV charger during my Boise remodel?
Absolutely. Pre-wiring for an EV charger during a remodel costs $300 to $800 (running a 6-gauge wire from the panel to the garage and installing a 50-amp dedicated circuit). Installing the same circuit after the remodel is complete costs $1,200 to $2,500 because of the additional drywall, finish, and access work. Even if you do not own an EV today, pre-wiring adds resale value as Idaho EV adoption accelerates. Ensure your panel has capacity for the additional 50-amp circuit, as a Level 2 charger (240V, 40-amp continuous draw) is the standard for home charging. If your panel is already at capacity, factor in a panel upgrade to 200-amp or 400-amp service.
Related Guides
The following government agencies, industry organizations, and official resources provide additional information relevant to your remodeling project.
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