Cost to Install a Septic System in Charlotte [2025 Data]

Over half of the homes in North Carolina rely on septic systems to dispose of wastewater, and urban centers like Charlotte are mostly on municipal sewers. However, if you live in a rural neighborhood in one of the surrounding areas, you might need a septic system. On average, the cost to install a septic system in Charlotte is $4,276, and most homeowners pay between $2,135 and $6,845 to complete this project. 

Septic System Installation Cost Factors 

If you’re installing a septic tank in Charlotte, the main factors that will affect the cost include the size, material, type of septic system, and site prep. These average costs can give you a good idea of the total, and consulting with a pro can give you an accurate estimate.

Tank Size

The septic tank size you need will depend on the number of bedrooms your home has. For a three- or four-bedroom home, you’d need a 1,000-gallon septic tank, which costs $900 to $1,500 for the tank alone.

Larger houses have more sinks, toilets, bathtubs, and other wastewater sources that flow into the septic tank. As tank size increases, so do costs.

Materials

Septic tanks are commonly made of plastic, concrete, or fiberglass, with fiberglass being the most expensive. Here’s how much a tank costs based on each material.

Type of Septic System

Each type of septic system comes with its own set of pros and cons. While anaerobic systems are relatively low-maintenance, they aren’t great for small properties. Similarly, anaerobic systems can do well in small spaces but require extra work.

• Anaerobic: Anaerobic systems are more common and cost $3,000–$8,000. They’re less costly than aerobic systems and don’t need extra power or chemicals, but they’re less efficient and require a larger leach field. A pipe runs from the house to the septic tank, where another pipe runs into the leach field. Anaerobic bacteria break down solid waste before the system distributes the wastewater into the soil. 

• Aerobic: Aerobic septic systems utilize oxygen pumped into the tank to activate bacteria that feed on the solid waste. They’re more expensive at $10,000–$20,000 but are more efficient and work well on smaller properties. They require additional power to run, so hook yours up to a power generator in case of a power outage. Otherwise, these systems can plug into your property’s main power source.

Site Prep

In Charlotte, you’ll have to get a soil test before you can install a septic tank. You’re required to submit a site plan detailing the scope of the project, and a land survey will ensure you’re staying within your property lines. You’ll also need to consider the cost of a percolation test as well as the actual leach field installation after the permit is granted. 

• Land Survey: You’ll need to get a land survey before installing a septic system to ensure your plans fall within property lines. Expect to spend $330–$900 to hire a licensed land surveyor.

• Percolation Test: Before the installation, you need a local perc test pro to perform a percolation test. The test measures water drainage in the soil, soil type, and the height of each sediment layer on your property to determine the best type of septic system for you. The cost to test your soil is $700–$2,000.

• Leach Field Installation: Septic tank systems consist of a septic tank and a trench referred to as a leach field or drain field. This section of the system transports the wastewater back to the soil. Drain field installation costs $5,000–$12,000.

Septic System Installation Pro Costs

Some soil types in the area aren’t suitable for septic tanks. Sandy soil allows water to drain from the system too quickly, while clay soil doesn’t drain quickly enough, and wastewater can pool. A septic tank installer in Charlotte, North Carolina, can determine whether your home is eligible for this type of waste disposal system. Your pro will also walk you through the permitting process and make sure you’re getting the required inspections. 

Labor 

Labor to install a septic system in Charlotte includes excavating the site of the tank and the leach field, installing the tank and pipes, and connecting the system to the home’s plumbing. Labor makes up between 50% and 70% of the total cost, and a local septic tank company can give you an accurate quote after assessing your property and the type of system you want to install.   

Permits

In Mecklenburg County, where Charlotte is located, a permit is required for installing a new septic system, repairs, soil tests and improvements, and when using an existing septic system. Fees are as follows:

• New residential septic system (including permits and inspections): $650

• Soil test and improvement for new residential septic systems: $250

• Septic system alteration: $300

• Use existing system: $100

• Modify plot plan: $100

Does a Septic System Increase Home Value?

According to the U.S. Environmental Protection Agency (EPA), an unusable septic system can reduce property value. Additionally, you may be responsible for repairing or replacing the septic system before you sell. 

Septic system maintenance costs between $250 and $500 every three to five years, but keeping your system in working order is less costly than a major repair or replacement. A well-maintained septic tank allows for independence from the public system and can help maintain home values—especially in areas around Charlotte that don't have the option of connecting to the public sewer and need a waste management system. 

How Angi Gets Its Cost Data

Home is the most important place on earth, which is why Angi has helped more than 150 million homeowners transform their houses into homes they adore. To help homeowners with their next project, Angi provides readers with the most accurate cost data and upholds strict editorial standards. We survey real Angi customers about their project costs to develop the pricing data you see, so you can make the best decisions for you and your home. We pair this data with research from reputable sources, including the U.S. Bureau of Labor Statistics, academic journals, market studies, and interviews with industry experts—all to ensure our prices reflect real-world projects. 

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