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*The Angi rating for Excavation companies in Johnstonville, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Excavation needs.

*The HomeAdvisor rating for Excavation companies in Johnstonville, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Excavation needs.

Last update on June 02, 2026

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Excavating questions, answered by experts

Consultation with the local government helps identify necessary permits, avoid project delays or legal issues, and protect project integrity.

Generally, a trenchless sewer line is worth the cost. If your old system needs replacement, trenchless sewer repair or replacement can save you thousands on excavation costs. Every homeowner’s situation is different, but this method is definitely worth it in a lot of cases.

Yes. A metal detector is one of the quickest and easiest ways to find your septic tank. However, metal detectors can be too expensive (costing upward of $300 in some cases), and not everyone has a metal detector just lying around. If that’s the case for you, you can also take a long metal rod and poke it into the ground at regular intervals until you hit something—likely your septic tank lid.

It takes one hour to dig a 10-foot trench by hand. Use a trenching shovel with a sharp tip and a long head. Plan for more time if your soil is heavy or rocky. Consider renting a trencher if you’re digging a long or deep trench or if you have challenging soil or terrain. 

A perc test can take anywhere from one to eight hours to complete. The total time depends on factors like the amount of excavation required, the depth and width of the holes, and whether multiple test holes are needed. For a single hole, the process of filling it with water and monitoring the drainage rate usually takes less than an hour. Professionals can often complete the entire test in a single day. While it's possible to get results the same day, some companies may take a few days to provide the official report.

The Johnstonville, CA homeowners’ guide to excavation services

From average costs to expert advice, get all the answers you need to get your job done.

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