Building Permit applications are completed online. Please go to the ePermits Online Portal and enter the information directly into the County's Permitting System.


The following plans are required when applying for a Patio Permit:

  • Site/Plot plans indicating the location
  • Structural plans

Patio Construction

Patios are considered open-air leisure areas. Structures built from brick, block, pavers, stone or concrete (masonry) are classified as patios.
Patios are usually built at grade. For construction of a patio built at existing grade (and less than 500 square feet), a permit is not required for construction. If the lot is served by a private well and/or septic, an at-grade patio must be reviewed by the Quality and Septic Systems Program to ensure that access for septic tank maintenance is provided.

Building Permit Requirements

If you intend to construct a patio over 500 sq. ft., a Building Permit is required, and site plans showing the existing and proposed structure location(s), including well and/or septic (if applicable), must be submitted. Structural plans also are required.
If the home is located in a subdivision with a Homeowner’s Association (HOA), a separate approval from the HOA may be necessary. Unless erected by the homeowner, all home improvement projects require that a licensed contractor by the Maryland Home Improvement Commission is used.