Perc Test CostSoil evaluation planner
Maryland local fee guide

Perc-test cost in Montgomery County.

The official agency calls this Soils Testing / Percolation Test. It publishes 9 separate official fee entries, shown separately from private testing costs.

Published government fees

Water-table visit

$547.24

Conventional perc test per lot / visit

$970.11

Mound test per lot / visit

$1,305.91

Sewage-disposal permit

$1,492.47

Subdivision or record-plat revision per lot

$634.30

Minor-subdivision plan review

$466.40

Partial soil survey

$292.28

Septic-system repair

$466.40

Permit extension

$211.43

FY 2027 estimated county fees by service

What the published fee includes.

The published FY 2027 county amount for the single test, visit, plan, permit, repair, or extension service selected.

What it does not establish.

Unselected county services, applicant-arranged excavation, private contractor work, additional visits, private septic design, and installation.

Do not add blindly: These are alternative or stage-specific county services, not one total; the schedule says amounts are estimates pending final calculation.

Next steps.

  1. Confirm which one of the listed testing, plan-review, permit, repair, or extension services applies.
  2. Arrange the applicant-provided excavation described by the county before the scheduled field visit.
  3. Treat the schedule as an estimate until the county calculates the final fee.

Verify the fee with Montgomery County Department of Permitting Services ↗

Check another location and the national benchmark →