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TRUSTED BY LEXINGTON, MA HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon29
    Verified structural engineering services reviews

Find Structural engineers in Lexington

Avatar for AJA Engineering, LLC

AJA Engineering, LLC

4.97(
111
)
Approved Pro

AJA Engineering, LLC

4.97(
111
)
Approved Pro
Super Service Award
Customers say: True professional
18 years of experience
Emergency services offered

Your Trusted Partner in Structural Engineering and Architecture Design Dear Customer, AJA Engineering LLC is your premier choice for all structural engineering and architectural services in the area. We understand that customer satisfaction is paramount to a successful business, and we take pride in having one of the highest satisfaction rates around. If you're seeking top-quality work at competitive prices, look no further than the professionals at AJA Engineering LLC. We are fully licensed and insured across several states, including Arizona, Florida, Georgia, Maine, Maryland, Massachusetts, North Carolina, Rhode Island, Texas, and Vermont. Please note that our verbal site consultation fee is $500. Feel free to reach out to me directly on my cell at 339-222-7594 or contact our office at 781-536-8624. Best regards, Aboud AJA Engineering LLC

"AJA showed up in a timely manner and got right to the heart of the structural issue we are having on a commercial building. Aboud was able to provide a report within a short period of time and suggested corrective work that needs to take place. These folks really know what they are doing and I would hire them again without hesitation. "

Jordan S on January 2026

Your Trusted Partner in Structural Engineering and Architecture Design Dear Customer, AJA Engineering LLC is your premier choice for all structural engineering and architectural services in the area. We understand that customer satisfaction is paramount to a successful business, and we take pride in having one of the highest satisfaction rates around. If you're seeking top-quality work at competitive prices, look no further than the professionals at AJA Engineering LLC. We are fully licensed and insured across several states, including Arizona, Florida, Georgia, Maine, Maryland, Massachusetts, North Carolina, Rhode Island, Texas, and Vermont. Please note that our verbal site consultation fee is $500. Feel free to reach out to me directly on my cell at 339-222-7594 or contact our office at 781-536-8624. Best regards, Aboud AJA Engineering LLC

"AJA showed up in a timely manner and got right to the heart of the structural issue we are having on a commercial building. Aboud was able to provide a report within a short period of time and suggested corrective work that needs to take place. These folks really know what they are doing and I would hire them again without hesitation. "

Jordan S on January 2026


Taddonio Engineering, LLC

4.87(
323
)
Approved Pro

Taddonio Engineering, LLC

4.87(
323
)
Approved Pro
Customers say: True professional
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
10 years of experience

Taddonio Engineering, LLC is a locally owned and operated company, that values honesty, integrity and treats your home as if it were our own. You will find us to be competitively priced, while still paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction. Give us a call today to get your project started!

"Adam provided us with an excellent structural design plan for the basement of our wicked old house to reinforce the existing structure. Great communication. Punctual. Professional. I definitely recommend and would hire again! "

Nick K on January 2026

Taddonio Engineering, LLC is a locally owned and operated company, that values honesty, integrity and treats your home as if it were our own. You will find us to be competitively priced, while still paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction. Give us a call today to get your project started!

"Adam provided us with an excellent structural design plan for the basement of our wicked old house to reinforce the existing structure. Great communication. Punctual. Professional. I definitely recommend and would hire again! "

Nick K on January 2026


Berdi Consulting

4.79(
138
)
Approved Pro

Berdi Consulting

4.79(
138
)
Approved Pro
Customers say: True professional
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
32 years of experience

Berdi Consulting provides structural engineering and architectural services in greater Boston area. We do comprehensive structural engineering analysis, architectural design, specifications and reporting.

"Stas was great, provessional, knowledgable. I highly recommend his work. His assistant Pavel, was not."

Matthew T on December 2024

Berdi Consulting provides structural engineering and architectural services in greater Boston area. We do comprehensive structural engineering analysis, architectural design, specifications and reporting.

"Stas was great, provessional, knowledgable. I highly recommend his work. His assistant Pavel, was not."

Matthew T on December 2024


Avatar for Harsini, Inc.

Harsini, Inc.

5.00(
6
)
Approved Pro

Harsini, Inc.

5.00(
6
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
7 years of experience

We pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all of our projects, no matter how big or small. We are experts in our field and will always keep you informed on your particular task or project in a manner that is understandable to you. We look forward to earning your business!

"Mahyar was knowledgeable and a great communicator. His report was clear and helpful. He was also prompt in responding. All-around pleasant to work with. Highly recommend this firm."

Liz G on April 2023

We pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all of our projects, no matter how big or small. We are experts in our field and will always keep you informed on your particular task or project in a manner that is understandable to you. We look forward to earning your business!

"Mahyar was knowledgeable and a great communicator. His report was clear and helpful. He was also prompt in responding. All-around pleasant to work with. Highly recommend this firm."

Liz G on April 2023


Avatar for Veitas and Veitas Engineers

Veitas and Veitas Engineers

5.00(
5
)
Approved Pro

Veitas and Veitas Engineers

5.00(
5
)
Approved Pro
22 years of experience

Building projects are rarely stress free. They can be more involved and complex than expected, often leading to confusion and frustration. We know. We've been there ourselves. We have houses and families. We've built additions for in-law apartments and removed bearing walls to make our kitchens bigger. We've had water in our basements, built and re-built decks, repaired retaining walls and and renovated old properties. We know what building projects can be like because we've done them too. Our goal is to provide our clients with step by step, start to finish engineering guidance that results in peace of mind and confidence in a job done right. We take great pride and care in working to understand the needs and expectations of our individual clients, and bringing our experience and expertise to bear on their specific, nuanced needs. Our reputation is based on service, safety and quality, regardless of how large or small the job. Call us today - we're here to help!

"Very responsive and fast in the evaluation, proposal, and project work they did for me. "

John P on January 2026

Building projects are rarely stress free. They can be more involved and complex than expected, often leading to confusion and frustration. We know. We've been there ourselves. We have houses and families. We've built additions for in-law apartments and removed bearing walls to make our kitchens bigger. We've had water in our basements, built and re-built decks, repaired retaining walls and and renovated old properties. We know what building projects can be like because we've done them too. Our goal is to provide our clients with step by step, start to finish engineering guidance that results in peace of mind and confidence in a job done right. We take great pride and care in working to understand the needs and expectations of our individual clients, and bringing our experience and expertise to bear on their specific, nuanced needs. Our reputation is based on service, safety and quality, regardless of how large or small the job. Call us today - we're here to help!

"Very responsive and fast in the evaluation, proposal, and project work they did for me. "

John P on January 2026


Avatar for d. a. kinsella company

d. a. kinsella company

4.39(
29
)
Approved Pro

d. a. kinsella company

4.39(
29
)
Approved Pro
Customers say: Quick response
36 years of experience
Free onsite estimate

d. a. kinsella company has been under the same creative management since 1990 and has completed hundreds of residential and commercial projects for private sector clients, including home and business owners, property managers, developers and local government. As an architectural firm, d. a. kinsella company offers architectural and construction management services, which include the preparation of: home and house plans, home designs, residential architecture, interior design and planning; construction plans and construction management services, cost estimates and construction management.

"From the very first meeting through the entire work they did they were very professional. I had a roof repair and other construction work done and I am very pleased with the quality of their work. I will definitely hire them agian and in the process of going over window replacement with them. Excellent job!"

John H on November 2021

d. a. kinsella company has been under the same creative management since 1990 and has completed hundreds of residential and commercial projects for private sector clients, including home and business owners, property managers, developers and local government. As an architectural firm, d. a. kinsella company offers architectural and construction management services, which include the preparation of: home and house plans, home designs, residential architecture, interior design and planning; construction plans and construction management services, cost estimates and construction management.

"From the very first meeting through the entire work they did they were very professional. I had a roof repair and other construction work done and I am very pleased with the quality of their work. I will definitely hire them agian and in the process of going over window replacement with them. Excellent job!"

John H on November 2021


Avatar for RENE MUGNIER ASSOCIATES, INC.

RENE MUGNIER ASSOCIATES, INC.

5.00(
3
)
Approved Pro

RENE MUGNIER ASSOCIATES, INC.

5.00(
3
)
Approved Pro
Super Service Award
11 years of experience
Free onsite estimate

Rene Mugnier Associates, Inc. is a structural engineering firm based in Cambridge, MA that specializes in the investigation, forensic, and rehabilitation of residential and commercial houses and buildings. Founded in 1973 by Rene Mugnier, our company focuses on helping in the purchase, sale, and with how to fix your home. We also provide full structural services for the preparation of structural plans for all constructions (home and commercial). With our structural investigations we aim to educate you on the existing potential or future problems which could occur pertaining to the structure of any kind of building

"I am a contractor that does structural repairs. I get hired by homeowners to work on their property and am often hired after they’ve consulted with Rene Mugnier and Associates. The engineers at this offices are extremely well versed in what they do, thorough and available. I recommend them to customers and friends and the time and I look forward to working on sites they are managing. I know the work is going to be top notch and professional. "

Don I on September 2025

Rene Mugnier Associates, Inc. is a structural engineering firm based in Cambridge, MA that specializes in the investigation, forensic, and rehabilitation of residential and commercial houses and buildings. Founded in 1973 by Rene Mugnier, our company focuses on helping in the purchase, sale, and with how to fix your home. We also provide full structural services for the preparation of structural plans for all constructions (home and commercial). With our structural investigations we aim to educate you on the existing potential or future problems which could occur pertaining to the structure of any kind of building

"I am a contractor that does structural repairs. I get hired by homeowners to work on their property and am often hired after they’ve consulted with Rene Mugnier and Associates. The engineers at this offices are extremely well versed in what they do, thorough and available. I recommend them to customers and friends and the time and I look forward to working on sites they are managing. I know the work is going to be top notch and professional. "

Don I on September 2025


Bob Dennis

No reviews yet

Bob Dennis

No reviews yet
25 years of experience

Also Registered Structural Engineer, Determine size beams, review and stamp house plans, Review and stamp building permit appliciations

Also Registered Structural Engineer, Determine size beams, review and stamp house plans, Review and stamp building permit appliciations


Avatar for Flynn Roofing Co LLC

Flynn Roofing Co LLC

4.98(
53
)

Flynn Roofing Co LLC

4.98(
53
)
Customers say: Quality work
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers

Flynn Roofing Co. was established in 1997 by Stephen Flynn. We are a small family-operated company that specializes in residential and commercial roofing, both asphalt shingles and rubber roofing. Some of our non-residential customers have included a nursing home, motel, town hall building, condo associations, a Mason lodge, and multiple office buildings. Our goal is to provide our customers with outstanding customer service and complete satisfaction. We pledge to return every phone call in a timely manner and address every question completely. We have an extensive listing of references showing our satisfied customers. We are not satisfied with your job until you are satisfied. We serve the Greater Boston area, the South Shore and Metro West. We are fully insured, including workers compensation and we use absolutely NO subcontractors, which is almost unheard of in this industry. The company you hire to do your job will be the company that arrives at your home. We pledge to install your roof as quickly as possible, while maintaining our strict quality standards. We work on one roof at a time and will be at your home daily (weather permitting) until your roof is completed. We work in an efficient and orderly manner, leaving your yard as we found it at the start of the job (some customers have said even better!). Flynn Roofing Co. is a Certainteed Select Shingle Roofer company, enabling us to offer our customers who choose Certainteed shingles a five-star warranty. This warranty includes a 15 or 20 year workmanship guarantee, along with the standard materials warranty. We purchase this warranty for ALL of our customers. We are also a GAF Authorized Installer. We are a proud member of the Northeast Roofing Contractors Association and the Better Business Bureau. We have had 0 complaints reported to the Better Business Bureau since we joined on 1/4/05.

"What I thought was going to be a painful process turned into a pleasant experience. Mr. Flynn was very timely in giving me a quote, supplying information about the materials, paperwork such as insurance certificate , and not subbing out the job. Mr. Flynn's crew was here at 7:50 AM. Stopped for lunch at 11:30 returned to work promptly at 12:30 and was finished with the job by 3. They were all very professional and courteous. The clean up was impeccable. Mr. Flynn and his crew know how to run a business. Kudos to Robyn too for all her help. Great Company!"

Barabara T on January 2021

Flynn Roofing Co. was established in 1997 by Stephen Flynn. We are a small family-operated company that specializes in residential and commercial roofing, both asphalt shingles and rubber roofing. Some of our non-residential customers have included a nursing home, motel, town hall building, condo associations, a Mason lodge, and multiple office buildings. Our goal is to provide our customers with outstanding customer service and complete satisfaction. We pledge to return every phone call in a timely manner and address every question completely. We have an extensive listing of references showing our satisfied customers. We are not satisfied with your job until you are satisfied. We serve the Greater Boston area, the South Shore and Metro West. We are fully insured, including workers compensation and we use absolutely NO subcontractors, which is almost unheard of in this industry. The company you hire to do your job will be the company that arrives at your home. We pledge to install your roof as quickly as possible, while maintaining our strict quality standards. We work on one roof at a time and will be at your home daily (weather permitting) until your roof is completed. We work in an efficient and orderly manner, leaving your yard as we found it at the start of the job (some customers have said even better!). Flynn Roofing Co. is a Certainteed Select Shingle Roofer company, enabling us to offer our customers who choose Certainteed shingles a five-star warranty. This warranty includes a 15 or 20 year workmanship guarantee, along with the standard materials warranty. We purchase this warranty for ALL of our customers. We are also a GAF Authorized Installer. We are a proud member of the Northeast Roofing Contractors Association and the Better Business Bureau. We have had 0 complaints reported to the Better Business Bureau since we joined on 1/4/05.

"What I thought was going to be a painful process turned into a pleasant experience. Mr. Flynn was very timely in giving me a quote, supplying information about the materials, paperwork such as insurance certificate , and not subbing out the job. Mr. Flynn's crew was here at 7:50 AM. Stopped for lunch at 11:30 returned to work promptly at 12:30 and was finished with the job by 3. They were all very professional and courteous. The clean up was impeccable. Mr. Flynn and his crew know how to run a business. Kudos to Robyn too for all her help. Great Company!"

Barabara T on January 2021


Avatar for NICK PORTNOY BUILDERS

NICK PORTNOY BUILDERS

5.00(
27
)

NICK PORTNOY BUILDERS

5.00(
27
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Nick Portnoy Builders LLC is a residential remodeling firm, based in Watertown, MA. Our focus is design-oriented small to medium sized projects. We can work in either a design/build capacity or simply as the general contractor, depending upon your needs. We do a variety of work, from the simple to the complex. We build the jobs ourselves with our own crew and work with a close-knit group of trade contractors, whom we believe to be among the best in the area. Our careful attention to detail, professional project management, and fine craftsmanship consistently delivers quality work and happy customers. If you’re considering having any work on your home done, we’d love to hear from you. 2 EMPLOYEES. USES SUBS FOR PLUMBING, ELECTRICAL, DRYWALL & TILE. COST IS DETERMINED BY THE JOB. NO TRAVEL CHARGES. NO SERVICE FEE. LICENSE NUMBER: 95634. MAY CONTACT THROUGH EMAIL.

Nick Portnoy Builders LLC is a residential remodeling firm, based in Watertown, MA. Our focus is design-oriented small to medium sized projects. We can work in either a design/build capacity or simply as the general contractor, depending upon your needs. We do a variety of work, from the simple to the complex. We build the jobs ourselves with our own crew and work with a close-knit group of trade contractors, whom we believe to be among the best in the area. Our careful attention to detail, professional project management, and fine craftsmanship consistently delivers quality work and happy customers. If you’re considering having any work on your home done, we’d love to hear from you. 2 EMPLOYEES. USES SUBS FOR PLUMBING, ELECTRICAL, DRYWALL & TILE. COST IS DETERMINED BY THE JOB. NO TRAVEL CHARGES. NO SERVICE FEE. LICENSE NUMBER: 95634. MAY CONTACT THROUGH EMAIL.

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Structural Engineering questions, answered by experts

The 10 10 rule describes the formula most contractors use to determine how much to charge for a job. Allowing for 10% overhead above the total projected cost to do the work and 10% profit sets a contractor up for success, even if there are delays or other problems on the project. This formula isn’t a hard-and-fast rule, but it is a ballpark figure to begin with when estimating your expenses on a job.

Foundation cracks that are 1/8 inch wide or less, aren’t uneven across the gap, and don’t continue widening over time are usually just normal settling cracks and don’t suggest structural issues. Horizontal cracks and stair-step cracks on foundation walls, any cracks that continue widening, are wider than 1/8 inch, or where one side juts out beyond the other, are often indicative of structural damage.

Building codes for spiral staircases will vary by your location. Most local codes will specify minimum tread width, riser height, handrail requirements, and headroom. These standards help ensure safety and accessibility for all users. Always check local codes before you begin the installation to ensure compliance and avoid costly modifications or fines.

Yes, walls on the top floor can be load-bearing if stacked on the floor’s foundation.

Indications include cracks in walls, uneven floors, and sticking doors or windows that suggest foundation movements.

The Lexington, MA homeowners’ guide to structural engineering services

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