Burying utilities is a one-time chance to get the layout right. We dig the trenches for overhead lines going underground, joint trenches on new builds and conduit runs across a property, laid out so the next person who digs doesn't have to guess.
Underground Utilities in Boise and the Treasure Valley
Once a line is buried, nobody sees it again until something goes wrong or someone digs into it. That's why we think about underground utility work as layout first and trenching second. Where the line runs, how deep it sits, what's spare and what's recorded all matter for decades.
We do this work in Boise, Eagle, Meridian, Star, Kuna and Nampa, along with the rest of the valley. Some jobs are one line to a new shop. Others are every service on a new home, or an older property finally getting its overhead wires taken down. The planning is the same either way.
Moving Overhead Lines Underground
Plenty of homes in the North End, the Bench and the Vista area still have a service drop strung from a pole to the house. Owners bury them to clear the view, get wires out of big trees, or stop worrying about wind and ice storms pulling them down. It also frees up space for trees to grow and for a boom lift or roofer to work near the house without dodging a live wire.
Idaho Power handles its side and sets its requirements, and your electrician handles the meter base and the house side. Phone and cable drops follow their own provider's rules. Our part is the trench from the pole or transformer to the house, dug to their specs. Older lots tend to have mature trees along that route, so we hand dig near big roots and plan around them where we can.
Joint Trenches on New Builds
On a new home, power and communications often share one trench, and sometimes gas does too, each at the depth and spacing its utility requires. Water and sewer usually get their own routes. The hard part isn't digging, it's timing. The trench has to be open when each trade and inspector needs it, and closed before it sits through a rainstorm. We work from your utility layout and schedule backfill around the last inspection. For general utility digging, see our utility excavation page, and for the sewer side of a new build, sewer line trenching.
Conduit, Sweeps and Pull Boxes
Conduit lets wire be pulled out and replaced later without digging. The electrical code limits how many bends a run can have between pull points, so long runs and routes with several turns get a pull box along the way. Long-radius sweeps at each end make pulling easier. We dig the pull box spots your electrician or the utility marks and leave room to set the box at grade.
The cheapest upgrade on any utility trench is an empty spare conduit with a pull string in it. A future EV charger, a fiber line to the shop or power to a gate can go through it with no new trench.
Planning a Utility Corridor Across Your Property
On acreage around Star, Kuna and Middleton, lines tend to get added one at a time over the years, and the result is a tangle of trenches nobody remembers. A better approach is a single corridor, usually along a fence line or the edge of the driveway, that power, water and communications can follow.
Think about the next 20 years when you pick the route. Anything built over a line makes it hard to reach, and anything dug nearby risks hitting it. Keep the corridor clear of:
- A future pool, shop or addition. See swimming pool excavation if one is on the list.
- The septic tank and drain field. See septic system installation.
- Large trees and the spots you'd plant new ones.
- Irrigation ditches, which usually need the ditch owner's OK to cross.
As-Built Notes So You Know Where Lines Are
Digline only marks lines that belong to a utility. Everything on your side of the meter is your responsibility to find. The easiest time to record where a line runs is while the trench is still open. Before it gets backfilled, it's worth writing down:
- Measurements to each line from fixed points like house corners and fence posts
- Depth at key spots
- Photos of the open trench with a tape in the frame
Warning tape above the lines and tracer wire on plastic pipe help a locator find them later. Keep the notes with your house records, and the next contractor won't be guessing. Plastic pipe with no tracer wire can be close to impossible to find without digging, so a few dollars of wire now can save a lot of searching later.
Lining Up the Utility, the Trades and the Trench
Most of the waiting on an underground utility job isn't on the trench. The power company has to review the request and set its requirements, the electrician has to be ready at the meter, and inspectors have their own calendars. Start with the utility, since its specs decide the depth, the conduit and sometimes the route. Once you have those, call us, and we'll set the dig so the trench is open when the trades need it and backfilled soon after the last inspection.
Finding Private Lines Before We Dig
We request a Digline (811) locate at least two business days before every job, as Idaho law requires. Private lines don't get marked: power to a shop, a gas line from the meter to a detached garage, well lines, sprinkler mains. Before we dig near them, we look for old plans and permit records, ask you what's been added, and recommend a private locating company when the property has a lot of unknowns. Where a crossing is likely, we expose it by hand first.
Why Hire Ultimate Excavation LLC
We're an Idaho registered contractor (RCE-65836) with a 5.0 rating on Google. Reviewers say we "value communication and arrive on time," which matters when the utility, the electrician and the inspector all need the trench on their schedule. Call (208) 697-2429 or request a free estimate.
