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TRUSTED BY LANSDOWNE, MD HOMEOWNERS

  • Average homeowner rating star icon4.3
    Average homeowner rating
  • Verified reviews icon27
    Verified structural engineering services reviews

Find Structural engineers in Lansdowne

Avatar for JES Foundation Repair

JES Foundation Repair

8361 Town Center Court
3.33(
18
)
Approved Pro

JES Foundation Repair

8361 Town Center Court
3.33(
18
)
Approved Pro
32 local quotes requested
32 years of experience

Established in 1993, JES stands as a trusted subsidiary of Groundworks, a distinguished family of companies renowned for delivering unparalleled solutions. From foundation repair, structural reinforcement, crawl space encapsulation, basement waterproofing, and concrete lifting, we provide comprehensive services tailored to meet your needs. With our coverage spanning across the state of Virginia and Maryland, we bring our local expertise closer to you. JES proudly holds accreditation from the Better Business Bureau, a testament to our unwavering commitment to excellence. Drawing from decades of collective experience, extensive industry knowledge, and ongoing specialized training, our dedicated team is poised to safeguard your residential property against water damage, concrete sinking, and foundation instability. At JES, we are not just builders; we are guardians of your peace of mind. Contact us today for a FREE estimate! 410516000653 (DC) | 50637 (MD) | WV027473 (WV)

"I hired JES to install a trench and sump system into the basement of a new house I purchased. After the job was completed, I noticed the cellar stairwell was pooling water. They returned and said that they didn't think that the drain was run direct to the sump as it should have been but they needed to open the concrete to verify. I also asked why there was no water in the sumps. They ran tests with water for 2 hours and didn't see water and tried to explain to me that it was expected since the water was running out around the drainage under the foundation. They even had a supervisor try to explain to me over the phone when I questioned it. It took them several weeks to return to fix the cellar drain and sure enough, the pipe was just run to under the foundation and not directed into the trench/sump. A repair team came out and busted up the concrete to correct it. In doing so, they saw that their trench was also not connected to the sumps at all, which is why I never saw water in the sumps and not the mysterious theory they tried to convince me of weeks prior. This is terrible that there is no inspection of work prior to covering it totally with concrete. Or further, there was no physical test of running water in the system to verify the sump works. The repair team that came out were wonderful and did everything correct. After this, I called 3 times and asked for a manager to call me to discuss this and never received a response. The salesman stopped answering my calls. As a note, after spending $30K on this upgrade to my house, it was in worse risk than prior to JES so if you choose them, be careful."

Rob S on October 2025

Established in 1993, JES stands as a trusted subsidiary of Groundworks, a distinguished family of companies renowned for delivering unparalleled solutions. From foundation repair, structural reinforcement, crawl space encapsulation, basement waterproofing, and concrete lifting, we provide comprehensive services tailored to meet your needs. With our coverage spanning across the state of Virginia and Maryland, we bring our local expertise closer to you. JES proudly holds accreditation from the Better Business Bureau, a testament to our unwavering commitment to excellence. Drawing from decades of collective experience, extensive industry knowledge, and ongoing specialized training, our dedicated team is poised to safeguard your residential property against water damage, concrete sinking, and foundation instability. At JES, we are not just builders; we are guardians of your peace of mind. Contact us today for a FREE estimate! 410516000653 (DC) | 50637 (MD) | WV027473 (WV)

"I hired JES to install a trench and sump system into the basement of a new house I purchased. After the job was completed, I noticed the cellar stairwell was pooling water. They returned and said that they didn't think that the drain was run direct to the sump as it should have been but they needed to open the concrete to verify. I also asked why there was no water in the sumps. They ran tests with water for 2 hours and didn't see water and tried to explain to me that it was expected since the water was running out around the drainage under the foundation. They even had a supervisor try to explain to me over the phone when I questioned it. It took them several weeks to return to fix the cellar drain and sure enough, the pipe was just run to under the foundation and not directed into the trench/sump. A repair team came out and busted up the concrete to correct it. In doing so, they saw that their trench was also not connected to the sumps at all, which is why I never saw water in the sumps and not the mysterious theory they tried to convince me of weeks prior. This is terrible that there is no inspection of work prior to covering it totally with concrete. Or further, there was no physical test of running water in the system to verify the sump works. The repair team that came out were wonderful and did everything correct. After this, I called 3 times and asked for a manager to call me to discuss this and never received a response. The salesman stopped answering my calls. As a note, after spending $30K on this upgrade to my house, it was in worse risk than prior to JES so if you choose them, be careful."

Rob S on October 2025


Avatar for AA Action Waterproofing Inc

AA Action Waterproofing Inc

805 Barkwood Court
4.82(
352
)
Approved Pro

AA Action Waterproofing Inc

805 Barkwood Court
4.82(
352
)
Approved Pro
Customers say: Quick response
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
11 local quotes requested

We strive to exceed your expectations in waterproofing, mold remediation and foundation repair. We take pride in our work, that’s why we don’t employ subcontractors. We understand there are a lot of choices out there when choosing a certified installer – we hope you choose us! Protect your home and health from mold and mildew invaders. In our 28 years of experience, we have never encountered a wet basement, crawlspace encapsulation or mold removal condition that we couldn’t handle. Give us a call today for a free, no obligation inspection and professional basement waterproofing system tailored for your home or commercial project. AA Action Waterproofing is licensed, insured and bonded with a A+ Rating with the BBB. Please call us and we’ll happily supply you with references.

"Our 25+ year-old French drain system in our 100-year-old basement was showing signs of failure, so we contacted several companies to get advice on what to do. Jason of AA Action was very professional and helpful when he performed his initial inspection of our basement, and had very good ideas on what needed to be done. The price he quoted for the work was also, based on what we had read, reasonable. We ended up going with another company recommended by Angi, but only because it brought up a couple of options that we had not thought of, and we felt comfortable with them doing the extra work. We were not at all unhappy with AA Action's suggestions or pricing - it's just that the other company's additional ideas made sense for our circumstances."

John A on June 2024

We strive to exceed your expectations in waterproofing, mold remediation and foundation repair. We take pride in our work, that’s why we don’t employ subcontractors. We understand there are a lot of choices out there when choosing a certified installer – we hope you choose us! Protect your home and health from mold and mildew invaders. In our 28 years of experience, we have never encountered a wet basement, crawlspace encapsulation or mold removal condition that we couldn’t handle. Give us a call today for a free, no obligation inspection and professional basement waterproofing system tailored for your home or commercial project. AA Action Waterproofing is licensed, insured and bonded with a A+ Rating with the BBB. Please call us and we’ll happily supply you with references.

"Our 25+ year-old French drain system in our 100-year-old basement was showing signs of failure, so we contacted several companies to get advice on what to do. Jason of AA Action was very professional and helpful when he performed his initial inspection of our basement, and had very good ideas on what needed to be done. The price he quoted for the work was also, based on what we had read, reasonable. We ended up going with another company recommended by Angi, but only because it brought up a couple of options that we had not thought of, and we felt comfortable with them doing the extra work. We were not at all unhappy with AA Action's suggestions or pricing - it's just that the other company's additional ideas made sense for our circumstances."

John A on June 2024


Avatar for Best Buy Waterproofing, LLC

Best Buy Waterproofing, LLC

8950 State Route 108
4.93(
43
)
Approved Pro

Best Buy Waterproofing, LLC

8950 State Route 108
4.93(
43
)
Approved Pro
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
32 local quotes requested

With over 30 years experience in Basement Waterproofing and Mold Remediation services, Andrew A. Altman, Sr. Is a top rated veteran with a proven record beyond belief! In fact the certified, professional Staff has a combined experience of over 60 years. When you hire Best Buy Waterproofing, you are hiring the very best in the industry! They have the WIT attitude ( Whatever It Takes ) and customer satisfaction is their #1 priority as they are "Comitted To Excellence!" Best Buy Waterproofing is licensed, bonded, insured, and certified. They have earned the reputation of standing behind their incredible work and customer satisfaction. They offer free estimates and the very best financing available. They even have No payments & No Interest for 18 months! Best Buy Waterproofing stands behind their lifetime of the structure warranty on their systems. Also on all sump pump systems and their intelligent battery back ups! Best Buy is the ONLY company who offers this kind of warranty on those services as Strength is their Foundation! If you need a dry basement certificate, call us immediately. We are operational 24/7 365!

"Dan was highly professional and offered an excellent evaluation of my needs. He actually went into the crawl space to better understand my needs. A good neighbor and a person to know. Thank you."

Arsalan S on November 2024

With over 30 years experience in Basement Waterproofing and Mold Remediation services, Andrew A. Altman, Sr. Is a top rated veteran with a proven record beyond belief! In fact the certified, professional Staff has a combined experience of over 60 years. When you hire Best Buy Waterproofing, you are hiring the very best in the industry! They have the WIT attitude ( Whatever It Takes ) and customer satisfaction is their #1 priority as they are "Comitted To Excellence!" Best Buy Waterproofing is licensed, bonded, insured, and certified. They have earned the reputation of standing behind their incredible work and customer satisfaction. They offer free estimates and the very best financing available. They even have No payments & No Interest for 18 months! Best Buy Waterproofing stands behind their lifetime of the structure warranty on their systems. Also on all sump pump systems and their intelligent battery back ups! Best Buy is the ONLY company who offers this kind of warranty on those services as Strength is their Foundation! If you need a dry basement certificate, call us immediately. We are operational 24/7 365!

"Dan was highly professional and offered an excellent evaluation of my needs. He actually went into the crawl space to better understand my needs. A good neighbor and a person to know. Thank you."

Arsalan S on November 2024


Area Engineering, Inc.

1456 W. PULASKI HWY
4.72(
147
)
Approved Pro

Area Engineering, Inc.

1456 W. PULASKI HWY
4.72(
147
)
Approved Pro
Customers say: True professional
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
17 years of experience

Area Engineering, Inc. is a full service structural engineering company providing investigation, assessment, design, expert testimony, and forensic reports for existing buildings, new construction, and remodeling projects. We have over 10 yrs of experience in structural design and documentation of residential, commercial, industrial, and municipal building structure conditions. Typically, a verbal structural site inspection cost is $450, and a follow-up structural letter, documenting our findings, is $150 additional. Engineering design, reports, and testimony vary in cost. Please call us today for more details! Thank you.

"They were very professional and knew there stuff. They were very nice."

Prissie C on November 2024

Area Engineering, Inc. is a full service structural engineering company providing investigation, assessment, design, expert testimony, and forensic reports for existing buildings, new construction, and remodeling projects. We have over 10 yrs of experience in structural design and documentation of residential, commercial, industrial, and municipal building structure conditions. Typically, a verbal structural site inspection cost is $450, and a follow-up structural letter, documenting our findings, is $150 additional. Engineering design, reports, and testimony vary in cost. Please call us today for more details! Thank you.

"They were very professional and knew there stuff. They were very nice."

Prissie C on November 2024


James B Sullivan, P.E.

Located In Annapolis, MD
5.00(
2
)

James B Sullivan, P.E.

Located In Annapolis, MD
5.00(
2
)
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Our mission is to be a provider that brings back the personal touch with our customers. We will build a relationship that will last a lifetime once you see our quality work. We're passionate about delivering an exceptional experience. When you hire us, you're hiring a team of professionals who are trained and skilled to deliver lasting value to your home. As a locally owned and operated business we feel invested in our clients and constantly strive for customer satisfaction. We won't leave until the job is done right! Call or click to schedule an estimate today!

"It went very well. He was very responsive and knowledgeable."

Phil C on January 2023

Our mission is to be a provider that brings back the personal touch with our customers. We will build a relationship that will last a lifetime once you see our quality work. We're passionate about delivering an exceptional experience. When you hire us, you're hiring a team of professionals who are trained and skilled to deliver lasting value to your home. As a locally owned and operated business we feel invested in our clients and constantly strive for customer satisfaction. We won't leave until the job is done right! Call or click to schedule an estimate today!

"It went very well. He was very responsive and knowledgeable."

Phil C on January 2023


We are a full service company that can handle any day to day project to major renovations, We specialize in waterproofing, window washing and power washing.


Zign Consulting

21226 Hickory Forest Way
5.00(
12
)

Zign Consulting

21226 Hickory Forest Way
5.00(
12
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

We are structural Engineers, our expertise include new building design, addition. Alteration, deck construction and underpinning of foundation and related works. We also provide inspections and permitting services Minimum Consultation fee including site visit is $400.00. This fee includes on site verbal finding and recommendation. For a written report signed and sealed by Professional Engineer, we charge additional fee starting from $500.00depending on scope of work. Structural design and drawing preparation fees vary based on the scope of work. We prepare permit ready drawings per the jurisdiction code requirement. We also provide permit expediting service for additional fee.

"Prior to any demolition work, I called on Zign Consulting to help me figure it out whether it would be simple or complicated to remove two walls that were separating the kitchen and living space. I really appreciated Sit's communication and responsiveness throughout; the day of the site visit she inspected the first floor and basement and provided sound advice. Based off of her recommendations, I removed the two walls without any issue and am currently enjoying my new open floor plan. I am happy to support a woman-owned, woman-run business and will call upon Sit and her team again for future projects."

Sandi T on February 2021

We are structural Engineers, our expertise include new building design, addition. Alteration, deck construction and underpinning of foundation and related works. We also provide inspections and permitting services Minimum Consultation fee including site visit is $400.00. This fee includes on site verbal finding and recommendation. For a written report signed and sealed by Professional Engineer, we charge additional fee starting from $500.00depending on scope of work. Structural design and drawing preparation fees vary based on the scope of work. We prepare permit ready drawings per the jurisdiction code requirement. We also provide permit expediting service for additional fee.

"Prior to any demolition work, I called on Zign Consulting to help me figure it out whether it would be simple or complicated to remove two walls that were separating the kitchen and living space. I really appreciated Sit's communication and responsiveness throughout; the day of the site visit she inspected the first floor and basement and provided sound advice. Based off of her recommendations, I removed the two walls without any issue and am currently enjoying my new open floor plan. I am happy to support a woman-owned, woman-run business and will call upon Sit and her team again for future projects."

Sandi T on February 2021


Transportation/Utility Design, Traffic, Land Development and Planning, Surveying, Right-of-way Acquisition, Environmental, Construction Engineering and Inspection, Structural, Litigation Support


Tri-Kelly Construction, Inc.

3948 Addison Woods Rd
No reviews yet

Tri-Kelly Construction, Inc.

3948 Addison Woods Rd
No reviews yet
21 years of experience

Hailing from the Frederick, Maryland area Tri-Kelly Construction is a full service construction and remodeling company. We have decades of experience working with clients looking to remodel or build commercial companies, restaurants, dispensaries and even government institutions. We pull from a vast network of contractors who believe in quick and accurate design and installation which we re happy to provide.

Hailing from the Frederick, Maryland area Tri-Kelly Construction is a full service construction and remodeling company. We have decades of experience working with clients looking to remodel or build commercial companies, restaurants, dispensaries and even government institutions. We pull from a vast network of contractors who believe in quick and accurate design and installation which we re happy to provide.


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Structural Engineering questions, answered by experts

A few hours for inspection, with a detailed report following in a week.

The standard thickness for an LVL beam is between 1.75 inches and 7 inches. However, you can order LVL beams in non-standard sizes as well. When you work with a contractor, they can source beams that are the appropriate size for your project for you after assessing your blueprints.

Structural engineers typically conduct inspections during a home sale or renovation, looking for signs of structural damage in various structures throughout the building, such as load-bearing walls, joists, beams, roofing trusses, foundations, and chimneys. Some of the warning signs that structural engineers check for include:

  • Dry rot

  • Infestation

  • Shifting or cracking foundations

  • Erosion

  • Water damage

  • Sagging, shifting, or damaged walls, ceilings, or roofing support

It depends on the bank and the extent of the issue. Some banks will lend against homes with minor foundation damage, but most won’t if the issue is structural since the home acts as collateral for the mortgage. Banks that offer renovation loans might still finance a home with structural problems. More minor issues like settling cracks and intermittent problems with humidity are unlikely to stop a bank from financing.

Yes, floor joists are essential structural components. They support the weight of floors and everything on them, transferring loads to the foundation and walls. Properly installed joists are necessary for maintaining strength, stability, and structural integrity.

The Lansdowne, MD homeowners’ guide to structural engineering services

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