Precedence Engineering Consulting, PLLC (PEC) is a multidisciplinary engineering and design firm based in Aldie, Virginia, serving clients across Virginia, Washington D.C., and Maryland. With over 15 years of experience, PEC specializes in providing comprehensive architectural and MEP (Mechanical, Electrical, and Plumbing) design solutions tailored to both residential and light commercial projects
17 customer reviews
Smokikabobsfairfax Llc
I had a very good experience with you thank you very much for your excellent service and job.
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sohrab samadi
Best company to work with very responsible and reliable 👏
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Marwa Abdulrazzaq
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Julio Cesar Estay
We hired Precedence Engineering for the development of the plans for our event venue with the goal of obtaining county permits, and the experience was excellent. From the beginning, Wisam and his team demonstrated a high level of professionalism. They worked closely with us and maintained constant communication with the county, addressing every requirement in a timely and responsible manner. We especially appreciate their patience, clear communication, and willingness to explain each step of the process, which made a significant difference in what is usually a complex and stressful procedure. Thanks to the support and commitment of Wisam and his team, we were able to move forward and successfully reach our goal. We highly recommend them for their professionalism, experience, and quality of work. More...
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Malcolm Temple
I hired Precedence in November 2024 to help me develop architectural and MEP plans for my first home renovation in DC, and they made the process feel easy. Wisam was responsive, took the time to really listen, and helped navigate feedback from the DOB without a hitch. I recommend them if you're looking for thoughtful, hands-on support from start to finish. More...
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D&J Lloyd
Although it took longer than expected for me to receive the plans back Once we receive them and submitted them, there were no change orders everything was correct and done. I will definitely use them again. I have already recommended them to a few of my other partners. More...
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Hareglossstudio
Wisam's expertise in DC building codes and regulations was instrumental in securing approval for the conversion of my commercial space from retail to a beauty salon. His team also provided exceptional support, working late hours with me. I highly recommend.thank you. More...
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Hussein Wajdi
Great service, professional and very responsive. Definitely recommend.
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Taha Tokhi
Wisam was great to work with! He was very helpful and willing to make any/all adjustments we needed as hurdles arose. Highly recommend!!
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Bailey's Childcare and Learning Center
Wisam is incredibly knowledgeable and has been a great asset to our school over the past two years. He has assisted us with several important drawings, all of which were completed with precision and professionalism. He did an outstanding job, and we will definitely continue working with him on any future projects. I highly recommend Wisam and his team—110%! Wisam, we truly appreciate your hard work and dedication. Thank you! More...
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Ameen Jumaily
I've had the pleasure of working with Wissam at Precedence Engineering Consulting on multiple projects, and his expertise has been invaluable. His attention to detail, problem-solving skills, and deep understanding of structural engineering ensure that every project runs smoothly. Wissam is always responsive, professional, and committed to delivering top-quality results. Highly recommend him and his team for any engineering consulting needs! More...
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sami hajjar
Precedence Engineering exceeded expectations in accuracy and professionalism. Definitely best destination for my MEP projects.
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Ahmad Alzyod
Great guys specially WISAM he did perfect job and act like his own project, highly recommend this offic
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Katie Laczko
Wisam is amazing to work with. He helped us with permits for our restaurant. With his help we were able to get through all the red tape. He was responsive and quick to assist if there were any questions. He is very knowledgeable and thorough. I intend to use him for any future projects! More...
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Maribel Carrillo Arevalo
Wisam was very helpful. We will use him for all our projects
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DJ Muller
Good man, works hard, calls back.
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Katie Laczko
Architectural Services
He was amazing!! Recommend 1000%. Professional and thorough.
What do you love most about your job?
I enjoy helping clients turn ideas into buildable projects by combining architectural design with MEP engineering, simplifying codes, coordination, and permitting into clear, practical solutions.
What inspired you to start your own business?
I was inspired to start my business to apply my architectural and engineering experience in a more direct, efficient way—providing practical, permit-ready designs without unnecessary complexity.
Why should our clients choose you?
Clients choose me for my combined architectural and engineering expertise, strong code knowledge, and proven ability to deliver permit-ready designs efficiently.
Can you provide your services online or remotely? If so, please add details.
Yes. I provide architectural and engineering services remotely through virtual meetings, digital site information, and online plan coordination. When required, on-site visits can also be arranged.
What changes have you made to keep your customers safe from Covid-19?
I offer virtual meetings and remote services whenever possible and take appropriate precautions during site visits to ensure everyone’s safety.
Architectural Service,MEP, Structural Design
PEC provides Architectural, MEP, and Structural Design services for residential and commercial projects. We prepare code-compliant permit drawings, engineering calculations, signed and sealed plans, and coordinated design packages to support permitting, construction, and project approval.
Building Assessment Services
PEC provides building assessment services to evaluate existing building conditions, identify visible deficiencies, and provide professional recommendations for repairs, upgrades, renovation planning, and code compliance.
Forensic Engineering Services
PEC provides forensic engineering services to investigate building damage, defects, failures, and performance issues in residential and commercial properties. Our services focus on identifying the likely cause of the problem and providing practical engineering recommendations for repair, correction, or further evaluation.
Construction Administration Services
PEC provides construction administration services to support the project during construction, including RFI responses, submittal review, site observations, field coordination, inspection support, and general coordination between the owner, contractor, and design team.
