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Verified Reviews for Structural Engineering pros in Windham, NH

*The Angi rating for Structural Engineering companies in Windham, NH is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Structural Engineering needs.

*The HomeAdvisor rating for Structural Engineering companies in Windham, NH is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Structural Engineering needs.

Last update on December 06, 2025

Find Structural engineers in Windham

Avatar for Groundworks

Groundworks

4.07(
164
)
•Approved Pro

Groundworks

4.07(
164
)
•Approved Pro
Customers say: Super punctual
41 years of experience
Free onsite estimate

Groundworks, previously Busy Dog Basement Technologies, specializes in helping homeowners with their waterproofing, foundation repair, crawl space, and remodeling needs. Our top priority is providing high-quality home repair solutions and personalized service across Massachusetts and Rhode Island. With fully trained technicians, industry-leading products, and nationally backed warranties, Groundworks is here to restore your foundation or basement. MA HIC 164895

"I had the annual maintenance on our Water Grabber system performed today by service technician Archie Boone. Archie as always great customer service, communication and professionalism. It is always a pleasure to see him. He has been servicing our system the past several years. I highly recommend Groundworks and Archie for their services."

Mike S on October 2025

Groundworks, previously Busy Dog Basement Technologies, specializes in helping homeowners with their waterproofing, foundation repair, crawl space, and remodeling needs. Our top priority is providing high-quality home repair solutions and personalized service across Massachusetts and Rhode Island. With fully trained technicians, industry-leading products, and nationally backed warranties, Groundworks is here to restore your foundation or basement. MA HIC 164895

"I had the annual maintenance on our Water Grabber system performed today by service technician Archie Boone. Archie as always great customer service, communication and professionalism. It is always a pleasure to see him. He has been servicing our system the past several years. I highly recommend Groundworks and Archie for their services."

Mike S on October 2025

J.R. Welding & Fabrication

No reviews yet

J.R. Welding & Fabrication

No reviews yet

J.R. Welding & Fabrication is a full service welding shop, servicing all of the North Shore and southern NH. We specialize in ornamental hand railings, new metal fabrication, and light structural steel. We also tackle a wide variety of welding repairs. Hand railings, dumpsters, dump truck bodies, trailers, and others! Whatever it may be, we have 2,800 sq ft of shop space to accommodate your project, as well as mobile welding capabilities. We hold 15 years experience welding various types of projects in multiple industries. Please inquire with us today, and join our list of happy customers!

J.R. Welding & Fabrication is a full service welding shop, servicing all of the North Shore and southern NH. We specialize in ornamental hand railings, new metal fabrication, and light structural steel. We also tackle a wide variety of welding repairs. Hand railings, dumpsters, dump truck bodies, trailers, and others! Whatever it may be, we have 2,800 sq ft of shop space to accommodate your project, as well as mobile welding capabilities. We hold 15 years experience welding various types of projects in multiple industries. Please inquire with us today, and join our list of happy customers!

Avatar for Ivan Filev

Ivan Filev

No reviews yet

Ivan Filev

No reviews yet
39 years of experience

Structural Engineer based in Boston, providing consulting services to architects, developers, contractors, builders, institutions, and property owners throughout New England, New York, New Jersey, Pennsylvania, Florida and California.

Structural Engineer based in Boston, providing consulting services to architects, developers, contractors, builders, institutions, and property owners throughout New England, New York, New Jersey, Pennsylvania, Florida and California.

Nick Burtt Home Improvements LLC

5.00(
2
)

Nick Burtt Home Improvements LLC

5.00(
2
)
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Family owned and operated general contractor. Providing all levels of construction from foundation to finish. Professional, on time and on budget. Call us today for a free estimate to start your next project.

Family owned and operated general contractor. Providing all levels of construction from foundation to finish. Professional, on time and on budget. Call us today for a free estimate to start your next project.

EHM

4.50(
16
)

EHM

4.50(
16
)
Customers say: Quality work
71 years of experience

EHM is a structural moving and elevating company that also specializes in foundation repair and replacement. We have been working in the Midwest since the Great Floods of 1993. We specialize in severely comprised foundation issues. We can elevate, level, pier or replace a wall or your entire foundation. We do not do mudjacking, waterproofing or minor crack repair.

"I did not get the service that we originally talked about I am very unhappy"

Donna S on August 2021

EHM is a structural moving and elevating company that also specializes in foundation repair and replacement. We have been working in the Midwest since the Great Floods of 1993. We specialize in severely comprised foundation issues. We can elevate, level, pier or replace a wall or your entire foundation. We do not do mudjacking, waterproofing or minor crack repair.

"I did not get the service that we originally talked about I am very unhappy"

Donna S on August 2021

JJ Calnan and sons Contractors

4.25(
4
)

JJ Calnan and sons Contractors

4.25(
4
)
Customers say: Terrific value
39 years of experience

JJ Calnan and sons Contractors is a family owned and operated business. With our total time in the construction industry, working for others and in business for ourselves, we have over 100 years experience. Our employees are longtime. loyal, dedicated and highly skilled. We can provide hundreds of references from homeowners, business owners, industry, religious institutions & municipalities. We are fully insured and liscensed. Our prices are very competitive and fair. We honor our Veterans who receive 10% discount. Contact John at [email protected]

JJ Calnan and sons Contractors is a family owned and operated business. With our total time in the construction industry, working for others and in business for ourselves, we have over 100 years experience. Our employees are longtime. loyal, dedicated and highly skilled. We can provide hundreds of references from homeowners, business owners, industry, religious institutions & municipalities. We are fully insured and liscensed. Our prices are very competitive and fair. We honor our Veterans who receive 10% discount. Contact John at [email protected]

Structural Engineering questions, answered by experts

Yes. Foundation walls are always load-bearing.

Costs depend on furniture type, size, complexity, and whether additional modifications are needed.

A 4-inch-thick concrete slab can support around 4,000 pounds per square foot if a contractor reinforces the slab with rebar, while that same slab without reinforcements will support closer to 1,000 pounds. For the purposes of a patio, 4 inches in thickness without reinforcement should suffice unless you’re installing heavy kitchen equipment or a hot tub on it. In those cases, reinforcing your slab and sticking with 4 inches of thickness should provide plenty of strength.

The National Association of Home Builders requires repair of any foundation crack of more than one quarter of an inch, although local regulations may vary. In general, any visible crack that is growing in size, allowing water through, or that you have just noticed, is a good reason to call a structural engineer. Cracks can be a sign of a sinking foundation, so an inspection is a good idea for your peace of mind.

In many areas, advice from a structural engineer or an architect will be required by your building department before you can remove a wall, but even if it’s not necessary, it’s a good idea. Accidentally removing a load-bearing wall—even if a general contractor advises that it’s safe—can cause major structural damage, putting you and your family at risk and potentially costing thousands or tens of thousands of dollars in property damage.

The Windham, NH homeowners’ guide to structural engineering services

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

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