100 Amp Sub Panel Installation Cost 2026

Buyers typically pay a range for a 100 amp sub panel installation, driven by panel type, distance from the main service, and wiring requirements. The price hinges on panel quality, feeder conductors, labor complexity, and permit costs. This article provides practical cost ranges and factors to help budgeting.

Item	Low	Average	High	Notes
Materials	$150	$350	$1,000	Panel, breakers, conductors, grounding
Labor	$400	$1,200	$2,500	Installation, de-energize, connections
Permits	$50	$150	$500	Local permit and inspection
Delivery/Disposal	$20	$60	$200	Old panel removal, packaging
Travel/Labor Time	$0	$100	$400	Based on distance from service.
Extras & Misc	$0	$100	$400	Conduit, filler, labeling
Total Project	$620	$1,360	$5,000	Assumes standard 15–40 ft run

Overview Of Costs

Typical cost range for a 100 Amp Sub Panel installation is roughly $1,000 to $3,800 in many residential settings, with some high-end scenarios near $5,000. This includes materials, labor, and permits under standard conditions. Expect lower costs for shorter runs, simpler panels, and no cosmetic upgrades; higher costs arise with longer feeders, difficult access, or new grounding work. The following section details what drives these numbers and how to refine the estimate.

Cost Breakdown

The cost breakdown below reflects common components and price bands for a typical 100 amp sub panel project. The table presents four to six columns to show totals and per-unit pricing where relevant.

Components	Low	Average	High	Assumptions	Per-Unit / Unit
Materials	$150	$350	$1,000	New sub panel, breakers, feeder conductors, grounding	$/panel, $/ft
Labor	$400	$1,200	$2,500	Licensed electrician, service de-energization, wiring	$/hour or fixed
Permits	$50	$150	$500	Municipal permit and inspection	$/permit
Delivery/Disposal	$20	$60	$200	Old panel removal, waste disposal	$/item
Extras & Accessories	$0	$100	$400	Conduit, labeling, mounting hardware	$
Warranty / Overhead	$0	$50	$200	Company overhead and small warranty	$
Total	$620	$1,860	$5,000	Assumes 15–40 ft feeder run with standard materials	$

What Drives Price

Feeder length and route largely determine wire quantity and trenching or conduit work. Longer runs, multiple bends, or routing through finished spaces increases both material and labor. Panel type and ratings affect the cost of the main device and breakers, especially if surge protection or AFCI/GFCI configurations are needed. Other drivers include accessibility, grounding upgrades, and local permit fees.

Cost Drivers With Numeric Thresholds

Two common thresholds influence pricing: feeder length and labor rate. For feeders over 40 ft, anticipate an additional $100–$400 for wire and labor. If the run requires complex routing or demolition, add $300–$800. A standard 100 amp sub panel with basic protection typically sits in the $1,000–$2,000 range; upgrades to higher-end panels or specialty safety features can push above $3,000 in many markets.

Ways To Save

Plan ahead and compare multiple quotes to reduce price variation. Scheduling during off-peak seasons or taking on minor permitting tasks when allowed may modestly lower costs. Consider consolidating work with other electrical projects to achieve economies of scale. Ask about bundled material pricing or preferred supplier programs to trim material costs.

Regional Price Differences

Prices vary by market. In urban areas, expect higher labor rates and permitting fees; suburban markets often fall in the middle; rural regions may offer lower labor costs but limited contractor availability. Typical delta ranges are approximately ±15–25% between urban, suburban, and rural settings, with feeder length still being the main driver.

Labor, Hours & Rates

Labor costs depend on local wage scales and crew size. A standard install might require 4–6 hours for a straightforward run, rising to 8–12 hours for longer paths or complex upstairs routing. Typical electrician rates are $60–$100 per hour in many regions, with travel fees adding $0–$100 if the job is distant.

Additional & Hidden Costs

Hidden costs can appear if the panel location requires finishing work or if existing wiring must be up-rated to meet current code. Surprise fees may include trenching, surface mount conduit in finished walls, or updated grounding electrode system. Budget a 5–15% contingency to cover such contingencies on larger homes or challenging installations.

Real-World Pricing Examples

Assumptions: region, basic panel, standard run length 15–40 ft, no major electrical upgrades.

Basic scenario: Panel replacement with standard 4–6 space sub panel, 15 ft feeder, simple routing. Materials $150; Labor $450; Permits $75; Total around $725; per-foot feeder cost ≈ $3–$7/ft.

Mid-Range scenario: 40 ft feeder, AFCI protection, metal conduit, moderate finish work. Materials $350; Labor $1,200; Permits $150; Total around $1,700; feeder $8–$12/ft.

Premium scenario: 60–80 ft run, multiple circuits, surge protection, and concrete or trenching work. Materials $800; Labor $2,400; Permits $250; Total around $3,450; feeder $10–$20/ft.

Maintenance & Ownership Costs

Sub panels generally require minimal ongoing maintenance, but periodic inspection of breakers and insulation is prudent. Budget occasional replacement of breakers or labeling updates as electrical needs evolve. Over five years, maintenance and minor upgrades could add $200–$600 depending on usage and local inspection cycles.

Permits, Codes & Rebates

Most jurisdictions require a permit and inspection for a new sub panel installation. Permit costs vary by locality, typically $50–$300, with inspections adding up to $200–$400 in some areas. Some regions offer energy-efficiency or safety rebates that reduce net cost when upgrading to certain breaker types or surge protection.

Price At A Glance: A typical 100 amp sub panel install in the U.S. falls in the $1,000–$3,800 range, with high-end scenarios around $5,000 depending on run length, panel features, and local permit rules.

Assumptions: region, panel type, run length, labor rate, and finish work; costs exclude any major electrical upgrades or structural work.