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TRUSTED BY WHIPPANY, NJ HOMEOWNERS

  • Average homeowner rating star icon4.8
    Average homeowner rating
  • Verified reviews icon20
    Verified structural engineering services reviews

Find Structural engineers in Whippany

"I called five different companies from the Angi list before finding Colonna Consulting. When I called and I explained my situation to Nick (the owner), I immediately knew he was the one. Despite his tight schedule, he managed to fit me in on the same day. We hired Colonna and Nick to inspect our residential structural foundation. Nick responded promptly to my requests and explained everything clearly during the inspection. He completed the report within the same day. Working with him was a pleasure, and his professionalism made the process smooth and stress-free. Thank you very much Nick, for your fast response."

May S on August 2025

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. We provide professional structural inspection, design, drawing, permit support, and consulting.

"I called five different companies from the Angi list before finding Colonna Consulting. When I called and I explained my situation to Nick (the owner), I immediately knew he was the one. Despite his tight schedule, he managed to fit me in on the same day. We hired Colonna and Nick to inspect our residential structural foundation. Nick responded promptly to my requests and explained everything clearly during the inspection. He completed the report within the same day. Working with him was a pleasure, and his professionalism made the process smooth and stress-free. Thank you very much Nick, for your fast response."

May S on August 2025


Avatar for StructuralMD

StructuralMD

4.80(
133
)
Approved Pro

StructuralMD

4.80(
133
)
Approved Pro
Customers say: Quality work
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
18 years of experience

StructuralMD is a structural engineering company that specializes in structural remediation, consulting, design and inspections as well as water management, mold remediation and basement dig-outs. It is a division of Lallygone, LLC, which was formed in 2008 by an structural engineer with extensive experience in civil engineering, structural remediation, and general construction.

"Yes, great professional service."

Will M on June 2024

StructuralMD is a structural engineering company that specializes in structural remediation, consulting, design and inspections as well as water management, mold remediation and basement dig-outs. It is a division of Lallygone, LLC, which was formed in 2008 by an structural engineer with extensive experience in civil engineering, structural remediation, and general construction.

"Yes, great professional service."

Will M on June 2024


Avatar for Cigano Engineering LLC

Cigano Engineering LLC

4.94(
8
)
Approved Pro

Cigano Engineering LLC

4.94(
8
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
9 years of experience

Cigano Engineering LLC, is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers interests, and make their concerns the basis of our business.

"Cigano identified a number of important changes to my architectural drawings to strengthen my structure (a car port). The changes recommended and implemented to my plans ensured my Town would issue a building permit. The Town had rejected my initial drawings and required its review and approval by a structural engineer or architect. Cigano really came through and its owner was easy to work with and highly professional. I would highly recommend Cigano."

David C on October 2023

Cigano Engineering LLC, is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers interests, and make their concerns the basis of our business.

"Cigano identified a number of important changes to my architectural drawings to strengthen my structure (a car port). The changes recommended and implemented to my plans ensured my Town would issue a building permit. The Town had rejected my initial drawings and required its review and approval by a structural engineer or architect. Cigano really came through and its owner was easy to work with and highly professional. I would highly recommend Cigano."

David C on October 2023


"Gave us some great advise during our foundation inspection and saved us a bunch of money!"

Jason Y on March 2024

Structural Workshop is a Structural Engineering and Building Consulting Firm. We are the leading provider of Residential Structural and Foundation Inspections and Repairs in New Jersey.

"Gave us some great advise during our foundation inspection and saved us a bunch of money!"

Jason Y on March 2024


SEAS Designs

4.72(
38
)
Approved Pro

SEAS Designs

4.72(
38
)
Approved Pro
Customers say: Quality work
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
35 years of experience

Solving your building?s problems and providing innovative cost effective designs for homes and buildings. SEAS Designs, is a unique engineering firm specializing in the technical aspects of buildings and their systems. We have expertise in building science, structural engineering, diagnostics and forensics, energy efficient design and construction techniques. Our company has over 17 years of engineering experience solving building problems and creating practical, cost effective designs. We specialize in small and medium size projects and enjoy working at all levels with homeowners, building owners, contractors, architects and engineers. SEAS Designs, is fully equipped to solve your building problems. We maintain a suite of calibrated test equipment and can perform infrared analysis, laser testing, blower door testing, duct testing, combustion testing and moisture testing as required for your project.

"They assessed project, did preliminary design, got helical pile subcontractor. We paid for soil and test drilling, and for topological survey as requested. The sub contractor hired to do scaffolding never did it, so we had to arrange that. So after 4 months of all the prep and 3 or 4 site visits by the engineer, we were ready to go. They never produced the design. After 2 months of emailing and calling we never got a single response. So we were out a couple grand engineering fee, and lost the entire build season. Had to start all over. (This was for a collapsing Livingroom on piers, so it was kind of urgent.) Trying to decide if it is worth going to small claims court to recover our feet. But the big problem is it just did not get done and the engineer just ghosted us, very unprofessional."

BRIAN C on October 2023

Solving your building?s problems and providing innovative cost effective designs for homes and buildings. SEAS Designs, is a unique engineering firm specializing in the technical aspects of buildings and their systems. We have expertise in building science, structural engineering, diagnostics and forensics, energy efficient design and construction techniques. Our company has over 17 years of engineering experience solving building problems and creating practical, cost effective designs. We specialize in small and medium size projects and enjoy working at all levels with homeowners, building owners, contractors, architects and engineers. SEAS Designs, is fully equipped to solve your building problems. We maintain a suite of calibrated test equipment and can perform infrared analysis, laser testing, blower door testing, duct testing, combustion testing and moisture testing as required for your project.

"They assessed project, did preliminary design, got helical pile subcontractor. We paid for soil and test drilling, and for topological survey as requested. The sub contractor hired to do scaffolding never did it, so we had to arrange that. So after 4 months of all the prep and 3 or 4 site visits by the engineer, we were ready to go. They never produced the design. After 2 months of emailing and calling we never got a single response. So we were out a couple grand engineering fee, and lost the entire build season. Had to start all over. (This was for a collapsing Livingroom on piers, so it was kind of urgent.) Trying to decide if it is worth going to small claims court to recover our feet. But the big problem is it just did not get done and the engineer just ghosted us, very unprofessional."

BRIAN C on October 2023


Avatar for Domus Company, LLC

Domus Company, LLC

5.00(
5
)
Approved Pro

Domus Company, LLC

5.00(
5
)
Approved Pro
4 years of experience
Free onsite estimate

Domus Company, LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"Job was done correctly and the city accepted the drawings without revision. very efficient service."

Yaset E on September 2025

Domus Company, LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"Job was done correctly and the city accepted the drawings without revision. very efficient service."

Yaset E on September 2025


Blackstone Engineering, PLLC

5.00(
3
)
Approved Pro

Blackstone Engineering, PLLC

5.00(
3
)
Approved Pro
2 years of experience
Free onsite estimate

We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.


VERIDIAN ENGINEERING LLC

5.00(
2
)
Approved Pro

VERIDIAN ENGINEERING LLC

5.00(
2
)
Approved Pro
1 years of experience
Free onsite estimate

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of General Contractor services that are customizable to each individual project. You will find us to be competitively priced, 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!

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of General Contractor services that are customizable to each individual project. You will find us to be competitively priced, 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!


Lahita Engineering, LLC

New on AngiNew on Angi
Approved Pro

Lahita Engineering, LLC

New on AngiNew on Angi
Approved Pro
16 years of experience
Free onsite estimate

Welcome to Lahita Engineering, LLC! Lahita Engineering, LLC, is your link to the best structural engineering design services and analysis in New Jersey. With over 8 years of experience, we offer custom design solutions for any commercial, residential, or industrial construction project.

Welcome to Lahita Engineering, LLC! Lahita Engineering, LLC, is your link to the best structural engineering design services and analysis in New Jersey. With over 8 years of experience, we offer custom design solutions for any commercial, residential, or industrial construction project.


Avatar for Duane Mainardi Builders LLC

Duane Mainardi Builders LLC

4.97(
127
)

Duane Mainardi Builders LLC

4.97(
127
)
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers

At Duane Mainardi Roofing & Builders, we specialize in outstanding quality remodeling services for roofing, siding, windows and much more! Our courteous, detail oriented installation crews offer the kind of workmanship you can count on. We're GAF Master Elite Certified, Angie's list Super Service award winning, BBB A+ rating, and a NRCA (national roofing contractor association) member. FOR AN IMMEDIATE RESPONSE, PLEASE CALL (609) 923-4548 OR EMAIL US AT [email protected]

"After years of working with various contractors on major home improvements, we finally found our dream team with Duane Mainardi Builders! From the moment we reached out, Duane and his crew impressed us with their honesty and clear communication. Duane was always available throughout the project, and Keith, the site foreman, was simply incredible. He was onsite every step of the way and made the entire experience smooth and enjoyable. When we asked for changes after work had started, they welcomed every request with a genuine commitment to getting it just right. The siding crew was professional, skilled, and worked tirelessly. What we anticipated to be a four day job was impressively completed in just two and a half days. The final result? Gorgeous vinyl siding that has completely transformed our home?s look. We wholeheartedly recommend Duane Mainardi Builders if you want high quality siding done right by a team that truly stands behind their work. Michael and Vicki Sneed"

Vicki _ on September 2025

At Duane Mainardi Roofing & Builders, we specialize in outstanding quality remodeling services for roofing, siding, windows and much more! Our courteous, detail oriented installation crews offer the kind of workmanship you can count on. We're GAF Master Elite Certified, Angie's list Super Service award winning, BBB A+ rating, and a NRCA (national roofing contractor association) member. FOR AN IMMEDIATE RESPONSE, PLEASE CALL (609) 923-4548 OR EMAIL US AT [email protected]

"After years of working with various contractors on major home improvements, we finally found our dream team with Duane Mainardi Builders! From the moment we reached out, Duane and his crew impressed us with their honesty and clear communication. Duane was always available throughout the project, and Keith, the site foreman, was simply incredible. He was onsite every step of the way and made the entire experience smooth and enjoyable. When we asked for changes after work had started, they welcomed every request with a genuine commitment to getting it just right. The siding crew was professional, skilled, and worked tirelessly. What we anticipated to be a four day job was impressively completed in just two and a half days. The final result? Gorgeous vinyl siding that has completely transformed our home?s look. We wholeheartedly recommend Duane Mainardi Builders if you want high quality siding done right by a team that truly stands behind their work. Michael and Vicki Sneed"

Vicki _ on September 2025

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Structural Engineering questions, answered by experts

The costs depend on the type of wood, labor, roofing material, permits, and whether additional storage or enclosed walls are included.

Yes, ceiling joists are typically load-bearing. However, their primary function is to support the weight of the ceiling and loads applied to it, like lighting fixtures and ceiling fans. They can also help support the roof, especially if they’re part of truss systems. Remember, the load-bearing capacity of ceiling joists depends on the material, size, and space between them. 

It's safe to assume that all exterior walls are load-bearing, or at least have load-bearing characteristics. Some older homes feature porches or bump-outs that don't rest on the home's foundation. However, they still must carry the weight of the roof section they support. Walls containing floor-to-ceiling glass or other non-structural elements must use post and beam configurations to meet load-bearing criteria.

All foundations have footers, including monolithic slabs. In some cases, the foundation itself acts as the footer, as in the case of a floating slab and a monolithic slab. With a monolithic slab, the footers—which are just the bottom-most portion of the foundation that distributes loads down to stable soil—are a part of the main slab and are constructed with a single pour.

Proper licensing and experience in residential and commercial structural projects.

The Whippany, NJ homeowners’ guide to structural engineering services

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