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Find Engineer structural pros in Washington DC

Zign Consulting Engineers, LLC

5.00(
3
)
•Approved Pro

Zign Consulting Engineers, LLC

5.00(
3
)
•Approved Pro
Super Service Award
26 local quotes requested
11 years of experience

Structural design for residential and commercial. New , renovation, addition and underpinning. Licensed professional Engineer in DC, MD and VA We take great pride in our experience, expertise, quality and customer service that we provide to meet every consumer's needs. It is our mission to provide excellent customer service from start to completion of a project. To understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a personal and professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

"Working with Zign Consulting has been the bright spot in an otherwise complex construction project. From the beginning, Zign Consulting was everything you hope for: honest, direct, highly capable, and urgent. After months of delays and complications caused by a previous architect, Zign Consulting stepped in and immediately brought clarity and direction. They swiftly got our plans completed and approved by DCRA—something the original architect struggled with for nearly a year. Their communication was transparent, their timelines were accurate, and their professionalism was unmatched. If you're looking for an architectural consultant who will advocate for your project and get things done the right way, Zign Consulting is the firm to hire. I can't recommend them enough."

Kameron F on July 2025

Structural design for residential and commercial. New , renovation, addition and underpinning. Licensed professional Engineer in DC, MD and VA We take great pride in our experience, expertise, quality and customer service that we provide to meet every consumer's needs. It is our mission to provide excellent customer service from start to completion of a project. To understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a personal and professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

"Working with Zign Consulting has been the bright spot in an otherwise complex construction project. From the beginning, Zign Consulting was everything you hope for: honest, direct, highly capable, and urgent. After months of delays and complications caused by a previous architect, Zign Consulting stepped in and immediately brought clarity and direction. They swiftly got our plans completed and approved by DCRA—something the original architect struggled with for nearly a year. Their communication was transparent, their timelines were accurate, and their professionalism was unmatched. If you're looking for an architectural consultant who will advocate for your project and get things done the right way, Zign Consulting is the firm to hire. I can't recommend them enough."

Kameron F on July 2025

Avatar for A & A Structures LLC

A & A Structures LLC

4.95(
10
)
•Approved Pro

A & A Structures LLC

4.95(
10
)
•Approved Pro
Customers say: Quick response
10 years of experience
Emergency services offered

Welcome to A & A Structures LLC, proudly servicing Bethesda and the surrounding areas. We provide Structural Engineering services for residential buildings, which include: modification to the building structures, structural damage assessment and solution, structural plans for building permits, and similar projects.

"Yahya is a total pro! Highly recommended him."

steven k on October 2025

Welcome to A & A Structures LLC, proudly servicing Bethesda and the surrounding areas. We provide Structural Engineering services for residential buildings, which include: modification to the building structures, structural damage assessment and solution, structural plans for building permits, and similar projects.

"Yahya is a total pro! Highly recommended him."

steven k on October 2025

Kamran Ohi P E

4.82(
155
)
•Approved Pro

Kamran Ohi P E

4.82(
155
)
•Approved Pro
Customers say: True professional
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
25 local quotes requested

Small business, self employed, use subcontractors that I can trust, minimum consultation and visit fee $295. That includes, site visit, inspection, and a verbal on site report and follow up with contractors as needed . The fee for site visit and inspection is a flat fee, basically it is the charge to drive to your location and provide a verbal report. This fee does not include a written formal report. A written report is approximately an additional $300. I work evenings and weekends as needed, structural, architectural and mechanical design, inspections and reports, fronsic, expert witness. Please contact by phone or email: Kamran@ohi-group.com. I will be on Vacation from July 9th till July 25th

"Kamran was easy to coordinate with and schedule the inspection. He was prompt and thorough with his review. His write-up was completed in a couple of days without any follow-up being required."

Andrew C on May 2025

Small business, self employed, use subcontractors that I can trust, minimum consultation and visit fee $295. That includes, site visit, inspection, and a verbal on site report and follow up with contractors as needed . The fee for site visit and inspection is a flat fee, basically it is the charge to drive to your location and provide a verbal report. This fee does not include a written formal report. A written report is approximately an additional $300. I work evenings and weekends as needed, structural, architectural and mechanical design, inspections and reports, fronsic, expert witness. Please contact by phone or email: Kamran@ohi-group.com. I will be on Vacation from July 9th till July 25th

"Kamran was easy to coordinate with and schedule the inspection. He was prompt and thorough with his review. His write-up was completed in a couple of days without any follow-up being required."

Andrew C on May 2025

Long Fence

3.88(
226
)

Long Fence

3.88(
226
)
Customers say: Quality work
80 years of experience

500 employees. Cost is determined by the job. Travel charges may apply. Ask about Angie's List discount. Financing available. Additional locations - 2520 Urbana Pk, Ijamsville, Maryland 21754; 1910 Betson Ct, Odenton, MD 21113; 42521 John Mosby Hwy, Chantilly, Virginia 20152. Additional phone numbers - (301) 662-1600, (410) 793-0600 & (703) 471-0960. Additional fax numbers - (301) 874-5706, (301) 261-0643 & (703) 478-3545.

"Initial rep was great and informative. Felt comfortable with initial sale. Hardly had any contact from customer service except for the payments. There were several delays that we were not informed about unless we called to ask. Took 7 months before they showed up to begin project. Only 1 person was sent to build steps. Took a week. Hard worked, hardly took a break. Had to call again to see when they would come to pour patio. Never knew when they were coming, they just showed up. Hardly spoke with the homeowners. Inspection paperwork was just left on porch. Additional paperwork that is "required by the County" had to be completed by homeowner and taken to Court house to be notarized and filed and also provide a copy back to Long Fence. Time sensitive materials which added to homeowners to-do list. Gave this contract to LF on the surface of their history and appearance of a 'good local company' but should have stayed with original contactors in VA. Puddle of water forms when it rains"

Anissa B on February 2024

500 employees. Cost is determined by the job. Travel charges may apply. Ask about Angie's List discount. Financing available. Additional locations - 2520 Urbana Pk, Ijamsville, Maryland 21754; 1910 Betson Ct, Odenton, MD 21113; 42521 John Mosby Hwy, Chantilly, Virginia 20152. Additional phone numbers - (301) 662-1600, (410) 793-0600 & (703) 471-0960. Additional fax numbers - (301) 874-5706, (301) 261-0643 & (703) 478-3545.

"Initial rep was great and informative. Felt comfortable with initial sale. Hardly had any contact from customer service except for the payments. There were several delays that we were not informed about unless we called to ask. Took 7 months before they showed up to begin project. Only 1 person was sent to build steps. Took a week. Hard worked, hardly took a break. Had to call again to see when they would come to pour patio. Never knew when they were coming, they just showed up. Hardly spoke with the homeowners. Inspection paperwork was just left on porch. Additional paperwork that is "required by the County" had to be completed by homeowner and taken to Court house to be notarized and filed and also provide a copy back to Long Fence. Time sensitive materials which added to homeowners to-do list. Gave this contract to LF on the surface of their history and appearance of a 'good local company' but should have stayed with original contactors in VA. Puddle of water forms when it rains"

Anissa B on February 2024

Potomac Run

5.00(
3
)

Potomac Run

5.00(
3
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

12 years of experience in cabinet making & furniture design.

12 years of experience in cabinet making & furniture design.

MLB Home Improvements

No reviews yet

MLB Home Improvements

No reviews yet
30 years of experience

Free estimates

Free estimates

Qualis Construction Inc.

4.33(
3
)

Qualis Construction Inc.

4.33(
3
)
Customers say: Quality work
20 years of experience

Qualis Construction is a Maryland state licensed and insured home improvement company with over 20 years of combined experience. We specialize in residential home improvements and construction projects. Our company is conviniently based in Bowie, MD located centrally between the Baltimore and Washington, DC metropolitan areas. Our keys to success are: Unparalleled quality on all of our material and services because at Qualis our name means “Quality”. Understanding our clients' unique home improvement desires while providing them with creative and cost effective solutions. Consistently maintaining a high level of integrity, respect, cleanliness, and punctuality when it comes to our customers as we strive for 100% customer satisfaction.

Qualis Construction is a Maryland state licensed and insured home improvement company with over 20 years of combined experience. We specialize in residential home improvements and construction projects. Our company is conviniently based in Bowie, MD located centrally between the Baltimore and Washington, DC metropolitan areas. Our keys to success are: Unparalleled quality on all of our material and services because at Qualis our name means “Quality”. Understanding our clients' unique home improvement desires while providing them with creative and cost effective solutions. Consistently maintaining a high level of integrity, respect, cleanliness, and punctuality when it comes to our customers as we strive for 100% customer satisfaction.

Avatar for Renovations By Ed

Renovations By Ed

4.76(
17
)

Renovations By Ed

4.76(
17
)
Customers say: Quick response
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers

Renovations by Ed provides exceptional services in kitchen & bathroom remodeling, cabinets, additions, trim, basements finishing, decks and general contractor projects. No jobs is too big or too small! Call or email us today for Free Consultation! 301-662-1967

"First experience with Renovations by Ed; a fantastic first experience. Professional, wonderful craftsmanship. He and his contractors hav given me a great sense of trust for future work."

Grace B on January 2024

Renovations by Ed provides exceptional services in kitchen & bathroom remodeling, cabinets, additions, trim, basements finishing, decks and general contractor projects. No jobs is too big or too small! Call or email us today for Free Consultation! 301-662-1967

"First experience with Renovations by Ed; a fantastic first experience. Professional, wonderful craftsmanship. He and his contractors hav given me a great sense of trust for future work."

Grace B on January 2024

Stavropoulos Associates

No reviews yet

Stavropoulos Associates

No reviews yet
52 years of experience

Stavropoulos Associates Architects + Builders specializes in taking projects from conceptual design through construction management. We serve clients in a broad geographic area and offer comprehensive professional services. Stavropoulos Associates is committed to the highest professional standard and we regard design as a problem solving discipline undertaken and followed up by meticulous technical work. The results are timely, affordable, and practical, yet they often transcend the ordinary.

Stavropoulos Associates Architects + Builders specializes in taking projects from conceptual design through construction management. We serve clients in a broad geographic area and offer comprehensive professional services. Stavropoulos Associates is committed to the highest professional standard and we regard design as a problem solving discipline undertaken and followed up by meticulous technical work. The results are timely, affordable, and practical, yet they often transcend the ordinary.

Nissi Landscaping Services

No reviews yet

Nissi Landscaping Services

No reviews yet

We are a small family owned landscaping business and have been in business for 5 years and almost 10 years of experience. From gardening, hedge trimming, mowing lawns, planting flowers to small tree removal, power-washing, and more! Our main focus is to help you design, transform, and enjoy your home completely from the outside. We value our customers time tremendously and our goal is to help you maintain an excellent view of your property and leave customers happy and 100% satisfied. We provide best quality work and we are trustworthy. We are ready to service all your needs and love new challenges. Give us a call for a FREE estimate.

We are a small family owned landscaping business and have been in business for 5 years and almost 10 years of experience. From gardening, hedge trimming, mowing lawns, planting flowers to small tree removal, power-washing, and more! Our main focus is to help you design, transform, and enjoy your home completely from the outside. We value our customers time tremendously and our goal is to help you maintain an excellent view of your property and leave customers happy and 100% satisfied. We provide best quality work and we are trustworthy. We are ready to service all your needs and love new challenges. Give us a call for a FREE estimate.

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FAQs for engineer structural projects in Washington DC, DC

To determine if a wall is load-bearing, start by checking your home’s original plans or asking a structural engineer. Exterior walls always carry weight, but interior ones only do if they sit over a beam or run perpendicular to floor joists. If a wall lines up with posts in the basement or falls directly under the roof ridge, assume it’s load-bearing and call a professional before attempting to remove it with a sledgehammer.

Calculating the wall load and sizing the beam must be performed by experts to ensure structural safety. You need a structural engineer to evaluate all load aspects and determine the proper beam dimensions. A professional engineer performs precise calculations and advises on any necessary enhancements, such as larger footings for support. An inspector then verifies that the revised structure meets all safety and code regulations before the finishing work begins.

Hiring a structural engineer is essential for ensuring your home remains structurally sound during any major renovation. Their responsibility is to deliver expert assessments and design recommendations for load-bearing modifications. The average cost to hire a structural engineer is $500, with rates ranging from $350 to $800. Consulting a licensed, experienced engineer guarantees that every structural project, whether constructing a new home or remodeling an existing one, is completed safely and efficiently.

Almost all load-bearing wall removals require a permit as they support everything above it, and building departments want proof that the new beam can handle the weight. Pulling a permit triggers plan review and inspections that confirm the work meets local code and safety standards. Skipping this step can lead to fines or being forced to rebuild later, so have your contractor pull the permit before work starts.

Removing a load-bearing wall to create an entrance for a carport or covered patio is a task that comes with defined cost implications. This modification requires extra structural adjustments to ensure safety and proper integration with the adjoining space. When you convert a wall into an entryway, you can expect to pay between $3,200 and $9,500, with an average cost of $6,400. The additional work required for this conversion reinforces the home’s integrity and ensures compliance with applicable building codes.

The Washington DC, DC homeowners’ guide to engineer structurals

From average costs to expert advice, get all the answers you need to get your job done.

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