Running underground power to a home typically costs $1,500-$6,000 for a short, straightforward connection, with longer utility extensions or difficult excavation reaching $10,000 or more. The cost depends mainly on distance, trench conditions, utility requirements, service size, and whether the work includes a new meter or panel.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Underground power run | $1,500 | $3,500 | $10,000+ | Short residential connection to a longer extension |
| Trenching | $5 per linear ft | $12 per linear ft | $30+ per linear ft | Higher for rock, pavement, or difficult access |
| Conduit and conductors | $4 per linear ft | $9 per linear ft | $18+ per linear ft | Depends on capacity and utility specifications |
| Electrician labor | $75 per hour | $100 per hour | $150 per hour | Regional rates and project complexity vary |
What a 100-foot underground power run usually costs
A 100-foot residential run often totals $2,000-$5,000 when the route is accessible, the soil is workable, and the existing electrical panel can serve the home. A basic job may cost less if the utility handles part of the installation; a longer service extension, panel replacement, or paved route can push the quote above $6,000.
For early budgeting, allow roughly $20-$50 per linear foot installed. That estimate assumes standard residential service, ordinary soil, and no major electrical upgrades. Utility-owned work may be priced separately or covered under the utility’s service policy.
Assumptions: Typical U.S. residential labor, standard conduit and conductors, normal access, and no rock excavation or panel replacement.
How trenching, conduit, and electrician labor shape the quote
Contractors may quote one installed price or itemize excavation, materials, electrical work, and restoration. Comparing line items helps identify whether the quote includes utility coordination, backfilling, inspection, and repair of disturbed landscaping.
| Quote component | Typical price | What changes the charge |
|---|---|---|
| Trenching and backfill | $5-$30+ per linear ft | Soil, depth, access, and surface restoration |
| Conduit and wire | $4-$18+ per linear ft | Service capacity, conductor size, and utility specifications |
| Electrician labor | $75-$150 per hour | Connections, grounding, testing, and service changes |
| Permits and inspection | $50-$500 | Local fees and required inspections |
| Removal or surface repair | $200-$2,000+ | Old wiring, concrete, asphalt, or landscaping damage |
Ask whether the quote includes both utility-side work and the electrician’s connection at the house. These can be separate scopes, with separate charges and scheduling.
Why distance, service size, and soil change the price
Distance is a major cost driver: adding 50 feet can add about $1,000-$2,500 at common installed rates, before unusual excavation or equipment charges. A 200- to 300-foot extension may therefore cost several thousand dollars more than a short connection.
Service capacity matters too. A typical 100- or 200-amp residential service uses different conductor sizes depending on load and run length; a longer run can require larger conductors to manage voltage drop. Rock, tree roots, steep grades, or a route beneath a driveway can add $10-$30 or more per foot compared with open, workable soil.
Confirm the required trench depth and materials with the utility and local inspector before work starts. Requirements vary by installation type and jurisdiction, so assumptions based on another property may not apply.
How many labor hours does a residential power trench take
A straightforward 100-foot installation may take a small crew about one day for excavation and conduit placement, followed by electrician work for connections and testing. Hand digging, restricted access, utility coordination, or inspection delays can extend the project to several days or longer.
At $75-$150 per electrician hour, 8-16 hours of electrical labor represents about $600-$2,400, excluding excavation crew charges and materials. A useful estimate check is Labor example: 12 hours × $100 per hour = $1,200.
How regional labor and utility rules affect underground rates
Urban markets with higher labor costs may run 15%-30% above a typical suburban quote, while rural properties can incur extra charges for long distances, travel, or utility line extensions. Local soil and climate also matter: rocky ground can raise excavation costs, and frost-related rules may affect required burial depth.
Utility policies can change the customer’s share substantially. Some utilities cover part of a standard service connection, while others charge for extensions beyond a defined distance or require a customer-paid trench. Request the utility’s written scope and fee estimate before comparing contractor bids.
Which extra charges can appear beyond the buried cable
Budget separately for panel or meter work, old-line removal, driveway boring, landscaping repair, and temporary power. Replacing a panel can add roughly $1,500-$4,000; boring beneath pavement may add $10-$40 per linear foot depending on length and access. Permit and inspection fees commonly add $50-$500.
Utility scheduling can also affect timing. A contractor may need to coordinate a service shutoff, inspection, and utility connection, so the trench should not be closed until the required checks are complete. Have the written estimate identify restoration, disposal, and utility charges rather than treating them as unspecified extras.
When overhead service costs less than underground power
Overhead service is often less expensive when poles and clear access already exist, but it may not be allowed or practical on a particular property. Underground installation avoids exposed wires and can suit a new build or a route where overhead lines would cross a driveway or open space, but trenching and surface repair add cost.
For a short, clear route, compare both options using the same service capacity and connection scope. If a trench is already planned for water, communications, or another utility, coordinated excavation may reduce equipment and mobilization charges, subject to required separation and inspection rules.
Ways to reduce the underground power installation bill
Keep the route as short and direct as utility rules allow, and ask whether the utility will perform or subsidize any portion of the work. Obtain at least three itemized bids that specify distance, trench method, conductor size, restoration, permits, and connection responsibilities.
Scheduling excavation alongside other permitted site work can avoid a separate mobilization, while choosing a route away from pavement and mature trees can limit restoration costs. Avoid selecting a smaller service or skipping required materials just to lower the quote; have the electrician and utility confirm the design first. The strongest savings usually come from controlling route length and excavation difficulty, not cutting required electrical work.