Cost of Adding a Second Breaker Box 2026
Buying a second breaker box, or subpanel, is a common home electrical upgrade. The price depends on panel size, wiring complexity, and local permit rules, with the exact cost fluctuating by region and contractor rates. This article breaks down the typical cost, per-unit prices, and realistic ranges readers can expect for a second breaker box installation.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Subpanel size (60A) | $350 | $800 | $1,400 | Panel plus enclosure |
| Labor to install subpanel | $600 | $1,200 | $2,000 | Includes wiring and conduit |
| Materials & breakers | $100 | $250 | $500 | Breaker(s), feeders, lugs |
| Permits & inspections | $100 | $250 | $500 | Local codes vary |
| Delivery/ disposal | $20 | $60 | $150 | Average small job |
| Contingency | $50 | $150 | $400 | Unforeseen fixes |
Assumptions: Midwest labor rates, standard 60–100 amp feeder, normal access, no major panel upgrades.
Typical Price Range for a Subpanel Install
Readers typically pay a total of $1,000-$2,500 for adding a 60A subpanel, including panel, breakers, and basic wiring. A larger 100A setup can range from $1,800-$4,000 depending on run length and existing service. Total project cost reflects panel type, feeder wire, and local permit requirements, with regional labor differences the biggest swing factor.
Major Cost Components in a Second Breaker Box
The quote usually breaks into four to six parts: Subpanel enclosure and main breaker (if required), feeder conductors, breakers for circuits, labor, permits, and possible disposal or delivery fees. $1,000-$2,500 for labor and enclosure on typical 60–100 amp installations.
| Component | Low | Average | High | Notes |
|---|---|---|---|---|
| Materials & breakers | $100 | $250 | $500 | Feeders, lugs, and breakers |
| Labor | $600 | $1,200 | $2,000 | Wiring, mounting, and connections |
| Permits | $100 | $250 | $500 | Based on local jurisdiction |
| Delivery/Disposal | $20 | $60 | $150 | Materials handling |
| Contingency | $50 | $150 | $400 | Unexpected fixes |
Key Variables That Change the Quote
Two strong drivers are feeder length and service amperage. Longer feeder runs increase wire and conduit costs, often adding $10-$20 per foot in materials and more labor time. A change from 60A to 100A can add roughly $600-$1,200 in materials and $400-$1,200 in labor depending on routing and panel type. Site accessibility and panel location also shift time and trips, with remote locations adding labor premiums.
Ways to Cut Overall Cost on a Subpanel Addition
Control scope by prioritizing essential circuits, reuse existing conduits where code allows, and choose standard, non-specialty panels. Scheduling during off-peak times or bundling with other electrical work can lower mobilization fees. DIY prep and site readiness reduces labor hours, but major connections should be done by a licensed electrician to meet code. Example: reusing a current 1/2-inch conduit can save installation time and material costs.
Regional Price Variations for Electrical Subpanels
Prices vary by region due to labor market and permit costs. In the Northeast, expect closer to the higher end of ranges; in the Southeast, midpoints are common. A reasonable regional delta is ±20%. Assumptions: urban area, standard 60–100 amp feeder, single-story residence.
Labor Time and Crew Size Impact
Most projects need a two-person crew for a full day or less. A 2-person crew for 6–8 hours typically yields a $800-$1,600 labor range for a 60A subpanel. If the job requires additional trenching, long conduit runs, or attic access, labor can rise to the $2,000 level. Labor time scales with run length and complexity.
Material and Equipment Choices That Drive Price
Choosing higher-quality panels, faster feeders, or expanded circuit capacity increases upfront cost. A 60A standard subpanel with 4–6 spaces costs less than a 100A, 12-space model with a main breaker-ready option. Typical per-unit costs: $100-$250 for a single 2-pole breaker, $350-$700 for a 100A subpanel enclosure with main lugs. Materials choice affects long-term reliability and future expansion.
Permits and Inspections Costs by Jurisdiction
Permits commonly add $100-$500 to the project, with inspection fees following the same range. Some jurisdictions bundle permit and inspection into a single charge; others bill separately. Always verify local rules, as some areas require a full meter-base upgrade when adding a subpanel. Expect higher costs in regions with strict electrical codes or high permit taxes.