Full Septic System Installation in Northern California
Available 24 hours a day, 7 days a week; including weekends and holidays.
A Full Septic System Is the Foundation of Every Rural Property
Lee One Construction is a licensed excavation and septic contractor serving Anderson, Redding, and Northern California since 2020, with 25 years of hands-on field experience. A full septic system covers every piece of underground wastewater infrastructure a property needs to operate independently from municipal sewer, the tank, distribution box, leach field, and all connecting lines.
There are three situations where a full system installation becomes unavoidable. If you are building on undeveloped land with no municipal sewer connection, a permitted septic system is a legal requirement before the county will issue a building permit. If an existing system has failed beyond the point of repair, tank structural failure, a drain field saturated past recovery; full replacement is the only compliant path forward. And if a property changes use in a way that exceeds the capacity of the installed system, county code may require a full upgrade before occupancy is permitted. In every case, an undersized or incorrectly installed system is expensive to correct, can force a property to cease habitation until the violation is resolved, and creates a material obstacle for any future sale or refinancing.
The scope section below outlines every phase Lee One Construction handles under one contract or call us directly if you need to confirm what your specific site requires before moving forward.


Every Phase of Your Septic Project, Handled by One Crew
When property owners piece together separate contractors for design, permitting, excavation, and inspection, coordination gaps create delays, cost overruns, and accountability voids. Lee One Construction manages the full scope under a single contract and single CSLB license, so there is one crew, one schedule, and one point of contact from first assessment to final county sign-off.
Site Assessment and Perc Testing
Before any design begins, we assess the lot's soil profile and conduct percolation testing to confirm what system type and size the site can support. A failed perc test discovered late in a project delays every downstream step, identifying it first keeps the entire project on schedule.
Engineered System Design
The system design must meet Shasta County Environmental Health specifications. We prepare engineered drawings that satisfy the county's requirements on the first submission, avoiding the resubmission delays that cost property owners weeks on a time-sensitive project.
County Permit Application
We manage the permit application, submit all required documentation to Shasta County Environmental Health, and track approval status. You don't navigate the permit office; we do.
Excavation and Site Preparation
Once permits are issued, we excavate to the specified dimensions and grades. Precision here determines whether the system drains correctly for its working life, off-grade trenches cause premature system failure that requires full re-excavation to correct.
Tank Supply and Setting
We supply and set the concrete septic tank, positioning it at the correct depth and orientation relative to the inlet line and the distribution box. Tank placement errors discovered at inspection require costly re-setting before the permit can close.
Distribution Infrastructure
The distribution box and connecting lines are installed to spec, ensuring effluent is distributed evenly across the leach field rather than concentrating in one zone. Uneven distribution is one of the leading causes of premature drain field failure.
Leach Field Construction
We trench and install the leach field to the permitted design, using bedding material and pipe placement that meet county inspection requirements. The leach field is where most system failures originate, correct construction at this stage is what determines long-term performance.
Final Inspection and Backfill
County inspection is scheduled and completed before any backfill. Once the system passes, we backfill and compact in lifts to prevent trench settlement that would require rework later.
Three Situations That Call for a Full System Installation
Raw Land Buyers Building a New Home
You have purchased undeveloped land. No sewer connection is available. A full septic system is not optional, it is the legal requirement before the county will issue a building permit. Choosing a contractor who manages the full scope from perc test to final inspection removes one of the largest sources of new construction delay.
Developers Preparing Lots for Sale
A lot with a permitted, installed septic system commands a higher sale price and sells faster than a raw parcel. Developers who engage Lee One Construction for full system installation on multiple lots across a subdivision get consistent permitting, consistent timelines, and a single licensed contractor accountable for the ground work across the entire project.
Property Owners Whose System Has Failed Beyond Repair
When a septic system fails to the point where repair is not viable, tank structural failure, drain field saturation beyond recovery, or a system that no longer meets current code after a change-of-use, a full replacement is the only path forward. Delaying the work does not reduce the cost; it increases the risk of a public health violation and a county enforcement action.
CSLB Licensed
#1063228, verifiable through the California Contractors State License Board.
25 Years of Field Experience
Monroe Lee has completed full system installations across Shasta County and the wider Northern California region since 1999.
24/7 Availability
We take calls and can mobilise every day of the year, including weekends and holidays.
Common Questions About Full Septic System Installation
How long does a full septic system installation take from start to finish in Shasta County?
Most full septic system installations in Shasta County take between two and four weeks from initial site assessment to final county inspection. The permit review stage is the most variable, Shasta County Environmental Health typically takes one to three weeks to issue approval once a complete application is submitted. Lee One Construction manages that process on your behalf.
What determines the size of a septic system for a new home in Northern California?
System size is determined by the number of bedrooms in the structure, daily water use projections, and the soil's absorption capacity as measured in a percolation test. Shasta County Environmental Health uses these inputs to specify the minimum tank size and leach field area. No system can be designed or permitted until perc test results are on file.
Does Lee One Construction handle the Shasta County permit application for a full system?
Yes. We prepare the engineered system design, complete the permit application package, and submit it directly to Shasta County Environmental Health. We track the application through review and coordinate the required site inspections. Property owners don't have to navigate the permit office, that's part of the full-system service.
What is the difference between a full system installation and a septic repair?
A full system installation builds new wastewater infrastructure from the ground up, tank, distribution box, leach field, and all connecting lines. A septic repair addresses a specific failed component within an existing system. If the existing tank, field, or distribution infrastructure cannot be repaired to current code, a full system replacement is required.
Can a full septic system installation happen on a lot that hasn't passed a perc test yet?
No. A passing percolation test is a legal prerequisite before Shasta County will issue a septic permit. Lee One Construction performs the perc test as the first step of the full-system process. If a lot fails its perc test, we assess alternative system types, such as mound or low-pressure distribution systems that may still meet county approval.



Get Your Full Septic System Installed Right; the First Time
Lee One Construction delivers a complete, permitted, inspected septic system under one contract, site assessment, engineered design, county permitting, excavation, tank setting, leach field construction, and final inspection, all managed by the same licensed crew. CSLB #1063228. Every day you wait on a failed or absent system is another day of compliance risk and lost property value. Call now and we will get your assessment scheduled.
Available 24 hours a day, 7 days a week — including weekends and holidays. Lee One Construction, 17255 Olinda Road, Anderson, CA 96007.






