Not all projects in Northern Virginia require a county approved grading plan and land disturbance permit if the project land disturbance is under 2,500 Square Feet. However, a Civil Engineering plan may still be necessary to properly fix a drainage issue and provide guidance to the site contractor. When drainage issues arise or when a contractor needs clear direction to provide pricing and/or execute work correctly; a Contractor Guidance Plan can be the perfect solution.
In these cases, DeMarr Engineering provides Land Surveying and Civil Engineering services for projects that don’t require county review but still demand professional‑grade design.
Do I Need a Contractor Guidance Site Plan?
Property drainage problems can cause everything from soggy backyards to foundation issues. Many homeowners, HOAs, and contractors want a reliable fix, but don’t want to trigger a larger, more expensive permitting process unless absolutely necessary.
A Contractor Guidance Site Plan fills the gap:
- It delineates the limits of disturbance under 2,500 Square Feet on a surveyed Site Plan document for contractors to follow to avoid the need for a county Grading Permit. Without clear direction and knowledge of the rules, a contractor or homeowner can accidentally trigger a stop work order and county violation if a project land disturbance exceeds 2,500 SF.
- It provides engineered direction and one set of bid documents. Rather than rely on one contractor to figure out a drainage solution that may or may not work, you can use our Site Plan to send the project out for competitive bid between 2-3 contractors.
- It provides options to choose from and clarifies exactly what the contractor will build such as a non-structural retaining wall (under 3-feet tall) or a permeable paver walking path.
- It documents existing and proposed site conditions to help HOA boards, neighbors, and homeowners understand the proposed improvements.
- The site plan serves as the basis for us to consult our clients in making the best decision, within their budget, for fixing small drainage issues.
- Any questions raised during construction can be answered over phone calls or email.
This makes it a highly efficient, cost‑effective approach.
Who Typically Needs Site Plans for Land Disturbance Under 2,500 Square Feet?
While they’re useful for homeowners and contractors as the client, the most common clients are:
Homeowners Associations (HOAs)
HOAs often need:
- An engineered site plan to present to board members for project decisions and funding approval.
- Documented Existing Conditions and Proposed Solutions for drainage complaints.
- Multiple design options to compare and choose from; tailored to the project’s budget and the level of desired fix.
- Bid Documents with a clear scope of work for contractors to provide competitive pricing.
Since HOAs must authorize funding for common area improvements, they rely on accurate surveys and site plan documents to make informed decisions.
Read about our project with the Springfield Station HOA.
Our Process for Contractor Guidance Site Plans
Every project begins with understanding the site, and the smartest way to improve it without triggering unnecessary permits.
1. Existing Conditions / Topographic Survey
We start by surveying the property to document:
- Existing Conditions of area to be improved
- Existing topography
- Key drainage features
- Structures, fences, and hardscapes
- Affected Trees and vegetation
- Site constraints that affect design
This becomes the foundation of the engineering plan.
2. Schematic Design Phase
We develop a schematic design that:
- Conceptual level of design for recommended improvements with options to choose from.
- Identifies flow paths and drainage improvement strategies
- Includes a clearly delineated project limits of disturbance (demonstrating compliance under 2,500 SF)
This step determines whether the project can proceed without county permitting. If it cannot, DeMarr Engineering can upgrade the design plans for county submission.
3. Contractor Guidance Site Plan with Multiple Design Options to Review
HOA boards and property owners appreciate choices, so we typically provide 2–3 solution options, such as:
- Swale regrading
- Surface drainage redirection
- Underground drainage systems
- Minor grading adjustments
- Downspout extensions or infiltration enhancements
- Permeable Pavement for walkways, driveways, and recreational areas
- Non-Structural Retaining Walls (Under 3-feet tall)
We explain the pros and cons of each option so decision‑makers can choose with confidence.
4. Plan Revisions and Finalization
After the HOA review, we can revise the design based on feedback of the HOA board and/or the contractor.
These revisions are billed hourly to a budgeted Revisions Phase keep costs fair and flexible.
Once finalized, the Site Plan document becomes the contractor’s roadmap for construction.
Optional Add‑On Services
Depending on project needs, we can provide support services to the client and contractor during construction:
- Construction Layout Surveying
Stakeout & Flagging to physically mark the Limits of Disturbance as well as exact locations and elevations for installation of proposed improvements. We provide a fixed-fee change order estimate for this service upon request. - Construction Advisory Services
Professional guidance during construction, including answering technical questions, reviewing contractor shop drawing submittals, and advising the client to help ensure a smooth and successful installation. This service is billed hourly on an as-needed basis. - As‑Built Surveying
Precise measurements of the final installed work to confirm and document that it matches the approved design. As‑builts are especially useful for HOA records, long‑term maintenance, and property value protection.
Why Choose DeMarr Engineering?
As a small, specialized firm, we bring:
- Efficient turnaround times for Land Surveying and Civil Engineering Services.
- Attention to detail on small projects that larger firms don’t have the time for.
- Clear communication with HOAs, homeowners, and contractors
- Feasibility Study Reports if you are unsure if a project is even feasible and how to proceed if it is.
- Single Point of Contact for Land Surveying and Civil Engineering ensures that clients have one firm managing all the technical aspects of their project.
- Hands-on Construction Experience that translates to the Contractor Guidance Site Plans with pragmatic solutions.
- Construction Advisory Support to advise the client and contractor after plans are issued.
This makes us uniquely positioned to deliver high‑quality Contractor Guidance Plans that solve problems without overcomplicating the process or budget.
Need Help With a Drainage or Grading Issue?
If you’re an HOA, homeowner, or contractor looking for a straightforward, engineered solution that avoids unnecessary county submissions, a Contractor Guidance Plan may be exactly what you need.
Contact DeMarr Engineering today to discuss your project.
