Existing Property Solutions
Practical engineering solutions for drainage and stormwater concerns on existing properties.
Additions, garages, patios, pools, driveways, and other improvements can create new stormwater requirements on properties that were developed long ago. Drainage problems can also develop over time. Standing water, erosion, wet yards, concentrated runoff, failing drainage systems, and water flowing toward buildings can result from existing site conditions, changes to nearby properties, or systems that no longer function as intended.
Elsa Associates evaluates existing drainage conditions, identifies how water is moving through the property, and develops practical solutions suited to the site and the applicable requirements.
New to stormwater management? Read our Stormwater Management Basics for Homeowners guide.
Stormwater for Home Improvements
Adding a garage, addition, patio, pool, or driveway can trigger your municipality’s stormwater requirements, even on a property that has never had a drainage problem. Elsa Associates reviews the applicable ordinance, the history of improvements on your property, and the proposed project to determine what is actually required, including whether an exemption or simplified process applies.
When stormwater management is required, Elsa Associates designs a practical solution, often an underground infiltration facility that preserves usable yard space, and prepares the plans and supporting documents needed for municipal approval. See how this worked for a residential addition in Manheim Township.


Drainage Evaluation & Solutions
Understanding how water moves across your property is the first step toward developing an appropriate solution. Elsa Associates evaluates site grades, runoff patterns, existing drainage features, adjacent conditions, and other factors that may contribute to ponding, erosion, concentrated flows, or water near buildings. Based on those conditions, improvements may include regrading, swales, yard drains, storm piping, infiltration facilities, outlet improvements, or a combination of measures suited to your property.
When improvements require a contractor or municipal approval, Elsa Associates can prepare plans showing proposed grading, drainage facilities, elevations, details, and other information needed to clearly communicate the work. The design can also be coordinated with contractors and adjusted as necessary when existing conditions are encountered during construction.
Existing Stormwater Facility Inspections
Existing stormwater facilities may require periodic inspection, maintenance, and documentation as part of municipal requirements or an operation and maintenance program. Elsa Associates can inspect detention and infiltration facilities, drainage systems, and other stormwater improvements; document existing conditions; and provide inspection reports and recommendations for maintenance or corrective work when appropriate.

Planning an Improvement or Fixing a Drainage Problem?
Elsa Associates can review your property and the applicable requirements, identify practical solutions, and develop a plan for your improvement or drainage problem.