Civil Engineering & Site Development

  • Existing Conditions Surveying

  • Site Grading Design

  • Stormwater Management Design

  • Land Disturbance & Demolition Permits

  • Construction Stakeout Surveys

  • Site Work Package


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Every engineering plan depends on accurate survey data. Let's see what we have to work with by making an Existing Conditions Plan for your site.... Click to Read More!


Are you excited about your Architect's building plans? We'll create the full Site Plan set for your new home or building.... Click to Read More!


Managing a construction project can be time-consuming and overwhelming. Let our experts handle it for you.... Click to Read More!


Who We Are

With a combination of engineering and construction services under one roof, we have the capability to handle your project from the day your property is acquired to the day of your final occupancy permit. 

Our mission is to provide our clients with a high level of service they can depend on daily to keep their projects running smoothly. In an age of same-day shipping and instant electronic data interchange, we believe in communicating just as fast. When a client calls or emails DeMarr, they know we will always answer promptly. Doing our job well, with pride, with honesty, and with efficiency are the simple core qualities that make our company great. 


Areas We Serve

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DeMarr Construction, LLC provides Site Work services to the Northern Virginia metro area:
  • Fairfax County
  • Arlington County
  • City of Alexandria
  • City of Falls Church
  • Town of Vienna
*Due to the logistics of large trucks and heavy earth-moving machinery, we like to focus our Site Development Services on the Northern Virginia market. Therefore, we currently don't offer site work packages for Washington, DC and Maryland. However, our Civil Engineering Division does provide consulting services for Washington, DC and Maryland. 
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DeMarr Engineering, PLLC provides Civil Engineering services to the Northern Virginia metro area:
  • Fairfax County
  • Arlington County
  • City of Alexandria
  • City of Falls Church
  • Town of Vienna
  • Washington, DC
  • Loudoun County
  • Montgomery County, MD
*Our Consulting and Civil Engineering services support a larger area since these services are office-based.


Request For Proposal

For any inquiries, questions or commendations, please fill out the following form below: 

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Mailing Address

DeMarr Engineering, PLLC

DeMarr Construction, LLC

1069 West Broad Street, Suite# 915

Falls Church, VA 22046-4610



Tel: 703-214-7220


To apply for a job with DEMARR Engineering, please send a cover letter together with your C.V. to: careers@demarr.dev

Talk to a Civil Engineer: 
(703) 214-7220