Perc Test Cost: State Fees, Who Does It, Failed Tests

If your land is not on a public sewer line, a home there will need a septic system. Before a septic permit is issued, someone has to check whether the soil can handle wastewater. Most people call that check a perc test. The result can decide whether a lot is buildable, and that has a big effect on what the land is worth.

This guide explains what a perc test is, who does it, and what it costs, using fees published by state agencies. It also covers what a failed test means for value and how to sell land that did not perc. Septic rules are set by each state and often by each county, so always confirm the current fee and process with your local health department.

What Is a Perc Test?

"Perc" is short for percolation, which means how water soaks down through soil. A septic system sends treated wastewater from a tank into a drainfield, where it moves down through the soil. If the soil drains too slowly, too fast, or sits on rock or a high water table, a standard system may not work.

A perc test, also called a soil test or site evaluation, looks at the soil on your lot to decide:

• Whether a septic system can go on the lot
• What type of system the site can support
• Where on the lot the system should go

The old method was to dig holes, fill them with water and time how fast the water dropped. Many places now also look closely at the soil itself in test pits or borings. Your state's rules decide which method is used. Delaware, for example, says the site evaluation determines what type of disposal system can be sited on the parcel under current rules (Delaware DNREC).

Who Does a Perc Test?

It depends on the state. In general, there are two paths.

• The local or state health department. In many states, county health department staff do the site evaluation as part of the septic permit. In Florida, county health department offices still handle septic permits and inspections, even though the program moved to the Department of Environmental Protection in 2021 (Florida DEP).
• A licensed private professional. Some states require or allow a licensed private evaluator to do the soil work, then the state reviews it. Delaware requires a licensed Class D soil scientist. Virginia accepts work from licensed onsite soil evaluators and professional engineers (Va. Code 32.1-164). Alabama suggests a professional engineer, land surveyor, geologist or soil classifier, and notes that county health department staff may also test or have past records (Alabama Department of Public Health). South Carolina keeps a map to help you find a Professional Soil Classifier.

When a private evaluator does the work, you pay two bills: the evaluator's charge and the government's fee. The government fee is published. The private charge is set by the evaluator and varies.

How Much Does a Perc Test Cost?

There is no single national price. Below are fees from three states that publish them in state rules or fee schedules. These are government fees only. They do not include a private evaluator, an engineer, a backhoe to dig test pits, or clearing brush so the evaluator can reach the site.

Florida

Florida's septic fees are set in Florida Administrative Code Rule 62-6.030.

So the state's site evaluation fee in Florida is $115. A new system permit adds its own application and inspection fees.

Virginia

Virginia's fees are in 12VAC5-620-70. The fee is lower when you bring work from a licensed onsite soil evaluator (OSE) or professional engineer (PE), because the health department does less of the work.

A certification letter says a lot can support a system. It is a common tool for owners who want to sell a lot as buildable. If you hire an OSE or PE, add their private charge to the fee above.

Delaware

Delaware's fees are on the DNREC permit fee schedule.

In Delaware, a licensed Class D soil scientist does the field work and submits the report. The $250 state fee is on top of the soil scientist's own charge.

Other States and Counties

Many states let each county health department set its own fees. Others, like Alabama, point you to private professionals. To find your cost:

1. Call or visit the environmental health section of your county health department.
2. Ask for the fee schedule for a site evaluation, soil evaluation or septic permit.
3. Ask whether you must hire a private evaluator, and get two or three quotes if so.
4. Ask whether the lot has an older test on file. A past result may help, though rules and soil conditions can change.

What Affects the Total Cost?

Beyond the published fee, the total can grow because of:

• Access. Thick brush or no road can mean clearing work before anyone can test.
• Test pits. Some sites need a backhoe or excavator.
• Retesting. A lot may need a second evaluation in another spot or season.
• System type. If the site needs an engineered or alternative system, design costs rise.
• Lot size. Small lots may not have room for a drainfield and a backup area.

What a Failed Perc Test Means

A failed test usually means the site does not qualify for a standard septic system in the spot tested. It does not always mean the land can never be built on.

Your Options After a Failed Test

• Test another spot. Soil can change across a lot. Florida even lists a separate fee for a site re-evaluation.
• Ask about an alternative system. The EPA lists several types of septic systems, including mound systems, aerobic treatment units and drip distribution. It notes that mound systems are an option where soil is shallow, groundwater is high, or bedrock is close to the surface. These systems often cost more to build and need more upkeep.
• Check for sewer. A nearby public sewer line may make septic unnecessary.
• Combine with a neighbor's lot. A larger combined parcel may have a better spot.
• Use the land another way. Recreation, hunting, timber, farming, storage or a neighbor's added yard may not need septic at all, subject to local zoning.

How a Failed Test Affects Value

Most buyers of small residential lots want to build. If a lot cannot get a septic permit, that pool of buyers shrinks. Buyers who remain, such as neighbors, hunters or investors, often pay less. Lenders may also be less willing to finance a lot that cannot be built on.

Large rural tracts are affected less, because buyers may plan other uses, or there may be another good site on the land. Lots that need a costly alternative system usually sell for less than lots that pass for a standard system, since a buyer will factor in the extra cost.

When you sell, share what you know about the test. Check your state's seller disclosure rules, and give buyers a copy of any report.

Selling Land That Did Not Perc

You have a few paths:

• List it for a non-building use. Market it for recreation, hunting or as extra land for a neighbor.
• Offer it to adjoining owners. A neighbor may want the space and does not need a septic permit.
• Fix it first. Pay for an engineered system design, then sell with a permit in hand. This costs money up front with no promise of a higher price.
• Sell to a cash land buyer. A direct buyer pays cash, so the sale does not depend on a buyer's loan.

Selling to EasyLotBuyer

EasyLotBuyer buys vacant land for cash. A failed or missing perc test does not stop you from asking us for an offer. We make a cash offer within 24 hours. There are no fees or commissions, and we pay the closing costs. We can close in as few as 7 days.

We also buy land with back taxes, liens, title issues or no road access, and land owned by heirs or estates. If back taxes are owed, they are paid at closing from the sale.

Start with our land value estimator, compare options with the offer calculator, or request a cash offer. For a full overview, see how to sell land.

FAQ

How much does a perc test cost?

It depends on the state and county. Published state fees include $115 for a site evaluation in Florida, $250 for a site evaluation in Delaware, and $225 to $425 for a Virginia sewage system construction permit. Private evaluator charges, if needed, are extra and vary.

Who does a perc test?

Either health department staff or a licensed private professional, depending on the state. Delaware requires a licensed Class D soil scientist. Virginia accepts licensed onsite soil evaluators and engineers. Florida county health department offices handle septic permits.

What happens if my land fails a perc test?

You cannot get a standard septic permit in that spot. You may be able to test another spot, use an alternative system, connect to sewer, or use the land for something that does not need septic.

Can I sell land that did not perc?

Yes. You can sell it for recreation, to a neighbor, or to a cash buyer. Share the test results with buyers. You can also request a cash offer from EasyLotBuyer.

Does a failed perc test lower land value?

Usually, yes, for lots where buyers want to build a home. It shrinks the number of buyers and can make loans harder to get. The effect is smaller for large rural tracts with other uses.

How long is a perc test good for?

It varies by state and county. Ask your health department whether an older test or permit can still be used.