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Engineer structural pros in Ashburn

Avatar for OGV Structural Engineering
OGV Structural Engineering
4951 Webbed Foot Way
5.00(
15
)
Approved Pro
OGV Structural Engineering
4951 Webbed Foot Way
5.00(
15
)
Approved Pro
Super Service Award
Customers say: True professional
32 local quotes requested
10 years of experience

OGV offers property condition assessments, due diligence, and existing conditions surveys. In addition to structural evaluations and investigations, as a Professional Structural Engineer License Holder (P.E.), we help and provide peer review, required documents and permit inquiries for counties and local agencies.

"Omid showcased professionalism and expertise by responding quickly, even with limited notice. He provided a detailed explanation of a specific item requiring special attention to meet current code standards. Furthermore, Omid certified the deck structure and delivered a thorough report and letter for the county permit reviewer. I wholeheartedly recommend Omid to anyone seeking a dependable and highly skilled structural engineer."

Wilfredo F on April 2025

OGV offers property condition assessments, due diligence, and existing conditions surveys. In addition to structural evaluations and investigations, as a Professional Structural Engineer License Holder (P.E.), we help and provide peer review, required documents and permit inquiries for counties and local agencies.

"Omid showcased professionalism and expertise by responding quickly, even with limited notice. He provided a detailed explanation of a specific item requiring special attention to meet current code standards. Furthermore, Omid certified the deck structure and delivered a thorough report and letter for the county permit reviewer. I wholeheartedly recommend Omid to anyone seeking a dependable and highly skilled structural engineer."

Wilfredo F on April 2025


Avatar for LOUDOUN SEPTIC TANK SVC
LOUDOUN SEPTIC TANK SVC
105 DELAWARE AVE
4.75(
40
)
Approved Pro
LOUDOUN SEPTIC TANK SVC
105 DELAWARE AVE
4.75(
40
)
Approved Pro
Customers say: Quick response
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
16 local quotes requested

Loudoun Septic Tank Service Inc. is based in Hamilton, Virginia, and has more than 25 years of experience providing septic tank pumping, installation of septic systems, repair of septic systems and home sale inspections through out the area. We are a family-owned-and-operated company. Loudoun Septic Tank Service Inc. prides itself on always being on time, providing personalized services, and emphasizing attention to detail. Contact us today to schedule a full-service cleaning for your septic system. **For EMERGENCIES please call 571-233-9306**

"Loudoun Septic just left after pumping our septic system today. They were prompt, professional and answered all my questions. I recommend! Shout out to Danny Gray and John Stein V who did the work today. Thank you."

Shawn C on September 2019

Loudoun Septic Tank Service Inc. is based in Hamilton, Virginia, and has more than 25 years of experience providing septic tank pumping, installation of septic systems, repair of septic systems and home sale inspections through out the area. We are a family-owned-and-operated company. Loudoun Septic Tank Service Inc. prides itself on always being on time, providing personalized services, and emphasizing attention to detail. Contact us today to schedule a full-service cleaning for your septic system. **For EMERGENCIES please call 571-233-9306**

"Loudoun Septic just left after pumping our septic system today. They were prompt, professional and answered all my questions. I recommend! Shout out to Danny Gray and John Stein V who did the work today. Thank you."

Shawn C on September 2019


Avatar for Great Falls Septic Service Inc
Great Falls Septic Service Inc
380 Burnt Factory Rd
4.63(
99
)
Approved Pro
Great Falls Septic Service Inc
380 Burnt Factory Rd
4.63(
99
)
Approved Pro
Customers say: Quality work
93 local quotes requested
72 years of experience

With 70 years of experience, Great Falls Septic Service offers comprehensive commercial and residential septic services. From brand new installs, repairs and maintenance-preventative or emergency, you can count on us to take care of all things septic. Additionally, we offer roll off containers and perform lot clearing. Our team of skilled servicemen provide quality workmanship and excellent customer service to ensure your septic system is well-maintained and fully functional. If you're looking for a company that provides outstanding service and quality work at an affordable price, then look no further than Great Falls Septic Service. We will do everything possible to cater to our clients. Family owned & operated. Phone number(s) 540-545-7075 or 703-444-5600. Fax number 540-545-7077

"On time, friendly, effective."

David F on May 2023

With 70 years of experience, Great Falls Septic Service offers comprehensive commercial and residential septic services. From brand new installs, repairs and maintenance-preventative or emergency, you can count on us to take care of all things septic. Additionally, we offer roll off containers and perform lot clearing. Our team of skilled servicemen provide quality workmanship and excellent customer service to ensure your septic system is well-maintained and fully functional. If you're looking for a company that provides outstanding service and quality work at an affordable price, then look no further than Great Falls Septic Service. We will do everything possible to cater to our clients. Family owned & operated. Phone number(s) 540-545-7075 or 703-444-5600. Fax number 540-545-7077

"On time, friendly, effective."

David F on May 2023


Avatar for Thomas Custom Builders Inc
Thomas Custom Builders Inc
9058 Euclid Ave
4.76(
89
)
Approved Pro
Thomas Custom Builders Inc
9058 Euclid Ave
4.76(
89
)
Approved Pro
Customers say: Quality work
247 local quotes requested
21 years of experience

Whether you want to remodel your existing home or build a brand new one, Thomas Custom Builders can help. Our 70+ years of combined experience as Northern Virginia general contractors and our commitment to quality ensures your custom construction or design-build project will be a success. Be it a master suite, custom kitchen or home addition, we dig deep to learn what’s making you spend your time and resources on this particular project. We honestly discuss the costs associated with your goals, then we deliver what we do best: excellence in custom remodeling. The only thing that counts is finishing your job exactly the way you want it. No compromise.

"From initial design meeting to project completion Thomas Custom Builders kept promises, delivered outstanding work on time and on budget and exceeded our expectations in every way. Their on site team did everything they could to keep the work place clean and tidy so as disrupt our home life as little as possible. Team leadership kept us informed and made sure our questions were answered promptly. They are excellent tradesmen with exceptional skills. I’d give them 10 stars if I could."

Calvin S on March 2025

Whether you want to remodel your existing home or build a brand new one, Thomas Custom Builders can help. Our 70+ years of combined experience as Northern Virginia general contractors and our commitment to quality ensures your custom construction or design-build project will be a success. Be it a master suite, custom kitchen or home addition, we dig deep to learn what’s making you spend your time and resources on this particular project. We honestly discuss the costs associated with your goals, then we deliver what we do best: excellence in custom remodeling. The only thing that counts is finishing your job exactly the way you want it. No compromise.

"From initial design meeting to project completion Thomas Custom Builders kept promises, delivered outstanding work on time and on budget and exceeded our expectations in every way. Their on site team did everything they could to keep the work place clean and tidy so as disrupt our home life as little as possible. Team leadership kept us informed and made sure our questions were answered promptly. They are excellent tradesmen with exceptional skills. I’d give them 10 stars if I could."

Calvin S on March 2025


Avatar for Benitez Landscape & Design
Benitez Landscape & Design
Po Box 1225
4.51(
43
)
Approved Pro
Benitez Landscape & Design
Po Box 1225
4.51(
43
)
Approved Pro
Customers say: Quality work
150 local quotes requested
32 years of experience

At Benitez Landscape and Design we pride ourselves on giving you the best service at the best possible price. Whether you are a homeowner, developer or commercial property owner, we look forward to meeting with you to discuss your landscaping needs. We also want to warmly thank those customers who have helped to grow our business by their referrals year after year. Owner operated with over 30 years experience since 1993.

"Very punctual and efficient. Respectful of property."

Robert C on February 2025

At Benitez Landscape and Design we pride ourselves on giving you the best service at the best possible price. Whether you are a homeowner, developer or commercial property owner, we look forward to meeting with you to discuss your landscaping needs. We also want to warmly thank those customers who have helped to grow our business by their referrals year after year. Owner operated with over 30 years experience since 1993.

"Very punctual and efficient. Respectful of property."

Robert C on February 2025


Avatar for Before & After Home Improvement Co
Before & After Home Improvement Co
2825 Noble Fir Ct
4.85(
26
)
Approved Pro
Before & After Home Improvement Co
2825 Noble Fir Ct
4.85(
26
)
Approved Pro
Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
655 local quotes requested

Before & After Home Improvement Co. is a residential contracting company serving the Prince William County, VA area. Contact us today for expert advice on your next project. We offer only the best quality services and products. Additional email - rickfish108@aol.com.

"Disgusted Customers Rick Fisher d.b.a. Before and After Home Improvement I am only giving a 1 star because I cannot go any lower. If you want professional and courteous service that also includes communication about delays and crew no shows, do not hire Rick Fisher and Before and After Home Improvement. My wife and I hired Rick Fisher and his company in the latter part of June 2018, to build a stamped concrete patio; a small composite deck; and a pergola with the electrical kit for the ceiling fan. The project finally began on August 7, 2018, and was completed around August 28, 2018. We paid Rick approximately $26,000 in 3 timely installments according to the contract. We exceeded our budget on this project because we were impressed with the pictures of Rick’s previous projects and his reviews. “Don’t believe the hype”. It all started with Rick not being able to obtain the county permit for the pergola due to his drawing which lacked specificity to the dimensions and materials used so the structure would be able to withstand strong winds. Rick advised me the permit office required him to hire an engineer which I would need to pay for him to subcontract to provide that information for his drawing to resubmit to the county permit office. Rick never mentioned this to us before we signed the contract, nor was it stipulated in the contract. Rick’s solution was pay for an engineer or don’t do the pergola. I took initiative to contact the permit office and speak with the manager to arrange a meeting with her and Rick. She was able to assist Rick and get the permit approved without the need for an engineer which would have been at my expense. During the course of this project, my wife and I spent entirely too much time, energy, and efforts addressing issues with Rick relative to his lack of responsiveness and doing the job he said he would. These issues were within his span of control and frankly he failed miserably. The materials are of a decent quality, which is why the pictures look great on the web, however; the customer service, commitment to doing the job right is a serious problem. Rick says he only does one job at a time and he will be on the job site everyday to ensure things are done to standard. This was simply not true. Rick has a lot of projects going on and he rarely came by our home. He was not responsive to my calls or text messages regarding his presence and multiple other issues that required communication. Rick told me the job was going fine because he saw the pictures of what was being done. I demanded that he come by my home to physically inspect the progress. He came by and some adjustments were required. Rick does not give you specific days or times when he will come by even when you are requesting a specific day or time. I had to send multiple text messages and calls to get him to do what he initially said he would do. The project was completed on August 28, 2018. On October 7, 2018, I contacted Rick regarding the rust on the staples holding down the electric cord on top of the pergola. Instead of utilizing galvanized staples or some material that does not rust as a result of inclement weather, his crew used regular staples to hold down the electric cord. Now I have rust running along the top of this expensive pergola that we paid Rick about $8,500 to build. The electrical kit was an additional $1,500 approximately. Rick has not come by my home to take care of this issue as of yet. We have a manufactures warranty on the material but nothing from Rick covering us on the workmanship of the project. On October 18, 2018, he sent someone allegedly from his crew to resolve the issue, however; the worker was not prepared to resolve the issue and was going to replace the staples with more of the same staples. Complete Nonsense! I advised Rick this was unacceptable. The deficiency would not take more than 2 hours to resolve, but Rick refuses to come out and take care of it. It’s such a small job, I cannot get another company to come out to do the repair because it’s not feasible. One reputable contractor said he cannot believe the company who did the work did not have the professional common courtesy to fix the problem. In addition to this, when Rick’s crew excavated the yard to lay the patio, they were supposed to leave a trench sufficient for water to flow into the storm drain. Now we have standing water in the yard when it rains. The yard had a trench before they began excavating and we had no issues with standing water. It’s going to cost me $1,000 to have this problem resolved. Perhaps it’s all in the name: Before and After Home Improvement. Beware, you will need repairs Before and After Home Improvement allegedly completes your project!"

Paul B on December 2018

Before & After Home Improvement Co. is a residential contracting company serving the Prince William County, VA area. Contact us today for expert advice on your next project. We offer only the best quality services and products. Additional email - rickfish108@aol.com.

"Disgusted Customers Rick Fisher d.b.a. Before and After Home Improvement I am only giving a 1 star because I cannot go any lower. If you want professional and courteous service that also includes communication about delays and crew no shows, do not hire Rick Fisher and Before and After Home Improvement. My wife and I hired Rick Fisher and his company in the latter part of June 2018, to build a stamped concrete patio; a small composite deck; and a pergola with the electrical kit for the ceiling fan. The project finally began on August 7, 2018, and was completed around August 28, 2018. We paid Rick approximately $26,000 in 3 timely installments according to the contract. We exceeded our budget on this project because we were impressed with the pictures of Rick’s previous projects and his reviews. “Don’t believe the hype”. It all started with Rick not being able to obtain the county permit for the pergola due to his drawing which lacked specificity to the dimensions and materials used so the structure would be able to withstand strong winds. Rick advised me the permit office required him to hire an engineer which I would need to pay for him to subcontract to provide that information for his drawing to resubmit to the county permit office. Rick never mentioned this to us before we signed the contract, nor was it stipulated in the contract. Rick’s solution was pay for an engineer or don’t do the pergola. I took initiative to contact the permit office and speak with the manager to arrange a meeting with her and Rick. She was able to assist Rick and get the permit approved without the need for an engineer which would have been at my expense. During the course of this project, my wife and I spent entirely too much time, energy, and efforts addressing issues with Rick relative to his lack of responsiveness and doing the job he said he would. These issues were within his span of control and frankly he failed miserably. The materials are of a decent quality, which is why the pictures look great on the web, however; the customer service, commitment to doing the job right is a serious problem. Rick says he only does one job at a time and he will be on the job site everyday to ensure things are done to standard. This was simply not true. Rick has a lot of projects going on and he rarely came by our home. He was not responsive to my calls or text messages regarding his presence and multiple other issues that required communication. Rick told me the job was going fine because he saw the pictures of what was being done. I demanded that he come by my home to physically inspect the progress. He came by and some adjustments were required. Rick does not give you specific days or times when he will come by even when you are requesting a specific day or time. I had to send multiple text messages and calls to get him to do what he initially said he would do. The project was completed on August 28, 2018. On October 7, 2018, I contacted Rick regarding the rust on the staples holding down the electric cord on top of the pergola. Instead of utilizing galvanized staples or some material that does not rust as a result of inclement weather, his crew used regular staples to hold down the electric cord. Now I have rust running along the top of this expensive pergola that we paid Rick about $8,500 to build. The electrical kit was an additional $1,500 approximately. Rick has not come by my home to take care of this issue as of yet. We have a manufactures warranty on the material but nothing from Rick covering us on the workmanship of the project. On October 18, 2018, he sent someone allegedly from his crew to resolve the issue, however; the worker was not prepared to resolve the issue and was going to replace the staples with more of the same staples. Complete Nonsense! I advised Rick this was unacceptable. The deficiency would not take more than 2 hours to resolve, but Rick refuses to come out and take care of it. It’s such a small job, I cannot get another company to come out to do the repair because it’s not feasible. One reputable contractor said he cannot believe the company who did the work did not have the professional common courtesy to fix the problem. In addition to this, when Rick’s crew excavated the yard to lay the patio, they were supposed to leave a trench sufficient for water to flow into the storm drain. Now we have standing water in the yard when it rains. The yard had a trench before they began excavating and we had no issues with standing water. It’s going to cost me $1,000 to have this problem resolved. Perhaps it’s all in the name: Before and After Home Improvement. Beware, you will need repairs Before and After Home Improvement allegedly completes your project!"

Paul B on December 2018


Avatar for Marks-Woods Construction Services, LLC
Marks-Woods Construction Services, LLC
205 S Union St
4.89(
161
)
Approved Pro
Marks-Woods Construction Services, LLC
205 S Union St
4.89(
161
)
Approved Pro
Customers say: True professional
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
1064 local quotes requested

Marks-Woods Construction Services is a full service general contractor serving Virginia and Washington, DC located in Historic Old Town Alexandria, VA. We have a complete array of services and project types to serve our diverse clientele, including residential and commercial construction. Teamwork is emphasized in our project management style. MW strives for positive collaboration with our clients to achieve all project goals. Customer service and successful communication contribute to our high percentage of repeat clients. Our service is what separates us from our competition. Our company's growth has been consistent, yet conservative by design. MW carefully selects projects that match our resources and skill set to ensure jobs are completed successfully, within budget, and on schedule. MW provides premium quality at a competitive cost with proven reliable performance, while maintaining a safe work environment. MW self performs the majority of its work, rather than using subcontractors. This allows MW to pass along significant cost savings to our clients, along with also providing a higher quality project, in a more aggressive time frame. Ready to discuss your project with the Marks-Woods team? We'd love to chat. For immediate assistance, please visit www.markswoods.com/contact and fill out the Contact Us form today!

"Excellent. We selected Marks-Woods Construction because they worked with us to create a proposal and contract that met our most important goals and stayed within our budget. We enjoyed working with the designers to come up with the details on what we wanted. The construction was done by the MW team of professionals. They know what they are doing, and it shows in the high quality results."

Alan S on March 2021

Marks-Woods Construction Services is a full service general contractor serving Virginia and Washington, DC located in Historic Old Town Alexandria, VA. We have a complete array of services and project types to serve our diverse clientele, including residential and commercial construction. Teamwork is emphasized in our project management style. MW strives for positive collaboration with our clients to achieve all project goals. Customer service and successful communication contribute to our high percentage of repeat clients. Our service is what separates us from our competition. Our company's growth has been consistent, yet conservative by design. MW carefully selects projects that match our resources and skill set to ensure jobs are completed successfully, within budget, and on schedule. MW provides premium quality at a competitive cost with proven reliable performance, while maintaining a safe work environment. MW self performs the majority of its work, rather than using subcontractors. This allows MW to pass along significant cost savings to our clients, along with also providing a higher quality project, in a more aggressive time frame. Ready to discuss your project with the Marks-Woods team? We'd love to chat. For immediate assistance, please visit www.markswoods.com/contact and fill out the Contact Us form today!

"Excellent. We selected Marks-Woods Construction because they worked with us to create a proposal and contract that met our most important goals and stayed within our budget. We enjoyed working with the designers to come up with the details on what we wanted. The construction was done by the MW team of professionals. They know what they are doing, and it shows in the high quality results."

Alan S on March 2021


Avatar for Yard By Yard Makeovers LLC
Yard By Yard Makeovers LLC
7304 Carroll Ave
4.78(
95
)
Approved Pro
Yard By Yard Makeovers LLC
7304 Carroll Ave
4.78(
95
)
Approved Pro
Customers say: Quality work
144 local quotes requested
27 years of experience

Brian David Mahan, Master Gardener, and his expert crew have been helping homeowners in Silver Spring and Takoma Park, Maryland since 1993. We can reshape and beautify neglected yards, or any yards. Our creative expertise can provide you with a basic plan compatible with your needs and budget

"Excellent workers that cleared a thick growth of bamboo from yard."

Amaris J on February 2023

Brian David Mahan, Master Gardener, and his expert crew have been helping homeowners in Silver Spring and Takoma Park, Maryland since 1993. We can reshape and beautify neglected yards, or any yards. Our creative expertise can provide you with a basic plan compatible with your needs and budget

"Excellent workers that cleared a thick growth of bamboo from yard."

Amaris J on February 2023


Avatar for Recinos Landscape and Hardscape
Recinos Landscape and Hardscape
5.00(
6
)
Approved Pro
Recinos Landscape and Hardscape
5.00(
6
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
970 local quotes requested

Landscaping, hardscaping and pavers services available. Give us a call or click to request a quote today!

"Eric and his crew were amazing. Great evaluation of our patio and walkway. They were easy to schedule. Work completed as estimated, even during grueling heat!! Cost was very reasonable. Would recommend."

Larry J on August 2024

Landscaping, hardscaping and pavers services available. Give us a call or click to request a quote today!

"Eric and his crew were amazing. Great evaluation of our patio and walkway. They were easy to schedule. Work completed as estimated, even during grueling heat!! Cost was very reasonable. Would recommend."

Larry J on August 2024


Avatar for Divine Landscaping Inc
Divine Landscaping Inc
PO Box 5272
4.89(
28
)
Approved Pro
Divine Landscaping Inc
PO Box 5272
4.89(
28
)
Approved Pro
Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
505 local quotes requested

Divine Landscaping Inc is a full service landscape company. Our professional design team can help you from start to finish with ALL your landscape needs. From custom stone work, retaining walls, patios and walkways to carpentry, landscape lighting, water features, landscape design and installation. We give free estimates on all our work.

"Jaime and his crew did an outstanding job. True professionals and hard workers and I have found my long term lawn and landscaping company for good. Highly recommended and 5 stars all the way"

CJ H on September 2021

Divine Landscaping Inc is a full service landscape company. Our professional design team can help you from start to finish with ALL your landscape needs. From custom stone work, retaining walls, patios and walkways to carpentry, landscape lighting, water features, landscape design and installation. We give free estimates on all our work.

"Jaime and his crew did an outstanding job. True professionals and hard workers and I have found my long term lawn and landscaping company for good. Highly recommended and 5 stars all the way"

CJ H on September 2021

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Engineer structurals FAQs

You should bring in a structural engineer any time you’re adding or removing something that carries weight—think new construction, a major remodel, or moving a load‑bearing wall. Call one during a real‑estate deal, after storm damage, or when you spot cracks in the foundation, beams, or chimney. An engineer’s report confirms that the structure is sound and tells your contractor exactly what fixes—or reinforcements—are needed to keep the home safe long‑term.

Who you hire depends on the task. Hire an architect to shape the look and layout of your home. Call a structural engineer to verify that load‑bearing elements—walls, beams, foundation—can handle the plan or to diagnose structural issues. Bring in a home inspector for a broad health check during a sale, after a storm, or for an appraisal. Matching the pro to the job keeps costs down and problems in check.

During the visit, the engineer checks your foundation, framing, walls, roof, and insulation, then compares what they see to any existing plans. If the structure matches the specs, you get the all‑clear; if not, the engineer outlines the fixes. Their sign‑off is what lets the next phase of work move forward, so expect clear notes on what’s solid and what needs attention.

Civil engineering is the broad field that covers roads, bridges, and other infrastructure. Structural engineers focus on the loads and forces inside a building or bridge—foundations, beams, and walls—while mechanical engineers design and keep power systems running, from elevators and turbines to HVAC equipment. In short, civil handles the big picture, structural makes sure it stands up, and mechanical keeps everything moving.

Most structural engineers offer free quotes. They’ll look at your home’s size and the scope of work to decide whether a flat fee or hourly rate makes sense. Simple inspections are usually priced by square footage; bigger, more complex jobs require a site visit and a detailed written estimate. Getting that number up front lets you nail down a budget before any drawings or inspections begin.

The engineer reviews every load‑bearing part of the home—floors, foundation, walls, roof, and major beams—along with insulation and the soil around the structure. They also factor in local weather risks and nearby water sources. The goal is to confirm that the materials and construction can handle day‑to‑day loads and extreme events alike, and to flag any spots that need reinforcement.

The homeowners guide to engineer structurals
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