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Find Addition to existing structure builders in Goffstown

Avatar for iCornerstone, Inc.
iCornerstone, Inc.
4.9(
58
)
Addition to Existing Structure - Build

Serving Goffstown, NH and surrounding areas

Approved

In business since 1988

Customers say: True professional

"My wife and I were looking to have an addition built on our 2 bedroom / 1 bath home back in the winter of 2022. After a phone conversation with Richard, we decided to have him come out to the house. He was very clear with the iCornerstone process, and the benefits of using this process. He is meticulous in measuring and understanding the existing structure. There are no guesstimates and all cost projections are based on the actual materials and labor needed to complete the work. Having such clarity regarding costs before any work begins is not something I've seen in this industry prior to this experience. It was certainly a welcome change. We now have plans for a home addition and complete control over the project. We decide the scope and can customize the plan to our budget. We are grateful to have worked with Richard, and highly recommend him!"
Entertainment center
Entertainment center
Architectural details
computer room left
computer room right

+11

Response time8 hrs
Response rate100%
Recommended by91%of homeowners
Avatar for MMP Construction Inc
MMP Construction Inc
4.6(
222
)
Addition to Existing Structure - Build

Serving Goffstown, NH and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"We had a very small roof area need to be repaired. I sent request to multiple company to give a service quote. Few of them sent me replies and stated that they are too busy to come. Matt of MMP Consturction's contacted me promptly, scheduled an on-site visit and gave us a quote right away. The work was then scheduled and finished quickly. Matt did great job on reaching out, effective communication, and always arriving on-time. He also gave an evaluation on our roof condition. Also, Eric and Don did excellent job on finishing the project. They are all very polite, knowledgeable, and showed their professionalism. We would like to express our sincere appreciation to Matt and his crew. We are very grateful for having them arriving on-time before the winter storm to prevent potential damage of the house. From their react, we see a warm heart. No job is big or small, all jobs are equally important. Understanding the difficulties of others, for the people, been appreciated by the people. Thank you again for your high quality service. We definitively recommend MMP Construction Inc. to anyone for any related home project."
Additional Photos
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Additional Photos

+154

Recommended by89%of homeowners
Ayotte Home Improvements
4.5(
88
)
Addition to Existing Structure - Build

Serving Goffstown, NH and surrounding areas

Approved

Super Service Award Winner

In business since 2005

Free estimates

Warranties offered

"Bob was great- this was our first renovation as new homeowners and he helped us through the process, answering all of our questions and listening to what we wanted. We absolutely love the end result!"
Before
After
After
Additional Photos
Response time5 days
9 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for O'Regan Construction
O'Regan Construction
4.5(
37
)
Addition to Existing Structure - Build

Serving Goffstown, NH and surrounding areas

Approved

Super Service Award Winner

In business since 1988

Free estimates

Customers say: Quick response

"Paul and team did an amazing job. They assisted with the full project from design, to permitting, to building and inspection. They were responsive to any adjustments we wanted to make along the way all while providing reliable, high quality construction on the established project budget."
Completed projects
Completed projects
Completed projects
Completed projects
Completed projects

+311

Response time2 days
13 neighbors recently requested a quote
Recommended by75%of homeowners
Avatar for St. James Construction, LLC
St. James Construction, LLC
5.0(
5
)
Addition to Existing Structure - Build

Serving Goffstown, NH and surrounding areas

Approved

Super Service Award Winner

Free estimates

Warranties offered

Customers say: True professional

"Corey and his team are great to work with. He is a prompt communicator and is very organized. He also has a great attention to detail and ensures the project is perfect before claiming he is done. He is easy to work with and was able to make our ideas a reality. We have used him for several projects already and have him lined up for another. I highly recommend St. James Construction."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+7

1 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Twin Timber Construction
Twin Timber Construction
5.0(
8
)
Addition to Existing Structure - Build

Serving Goffstown, NH and surrounding areas

Approved

In business since 2025

Free estimates

Offers commercial services

"Michael built a single family home in Laconia and his work was thoughtful, tasteful, and overall very well done. He was very responsive and quick to make any requested adjustments. I highly recommend Michael and his team for any renovations, improvements or building a home from start to finish!"
Laconia Custom Home
Laconia Custom Home
Laconia Custom Home
13 neighbors recently requested a quote
Avatar for On Task Construction LLC
On Task Construction LLC
5.0(
9
)
Addition to Existing Structure - Build

Serving Goffstown, NH and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

We are 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.\n\nTrip charge $100 will be taken off the contracted amount once agreement is signed.

Spray foam
Spray foam
Spray foam
Deck build
Deck build

+4

2 neighbors recently requested a quote
Recommended by33%of homeowners
Avatar for Freedom Framing and More, LLC
Freedom Framing and More, LLC
4.3(
14
)
Addition to Existing Structure - Build

Serving Goffstown, NH and surrounding areas

Approved

In business since 2014

Free estimates

Warranties offered

"The project is underway and will be completed on time. Mathew is very personable and easy to work with. He has kept me informed about every step thus far. I’m looking forward to having our new space completed and ready to use."
Before
During
Wrapping up
Finished
Prep

+34

Response time2 days
Response rate95%
Recommended by84%of homeowners
Avatar for RD Horizon Builders LLC
RD Horizon Builders LLC
5.0(
2
)
Addition to Existing Structure - Build

Serving Goffstown, NH and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

"What really sets them apart is communication and reliability. They showed up when they said they would, kept us informed every step of the way, and handled any changes or questions quickly and professionally. No surprises, no excuses ? just great service and great results. If you?re looking for a remodeling company that is skilled, trustworthy, and truly cares about the outcome of your home, this is the team to hire. We will absolutely be using them again and recommending them to everyone we know."
Full bathroom Remodel
Full bathroom Remodel
Siding
Siding
Siding

+23

3 neighbors recently requested a quote
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FAQs for addition to existing structure building service projects in Goffstown, NH

You can typically raise your roof by four to eight feet, depending on your home's structure and roof design. The exact amount depends on factors like roof slope and framing support. Raising the roof creates additional interior space, enhances natural light, and increases your home's value. Consult a professional to determine the feasible height increase for your home.

Yes, you need a building permit to raise your roof. Obtaining a building permit ensures your project complies with local building codes and safety regulations. A professional contractor can assist with the permit and inspection process and ensure all legal and safety requirements are met. Your contractor will be familiar with building codes in your area, which can differ between cities or states.

While it's possible to raise a flat roof, it requires extensive structural modifications. Flat roofs lack the attic space and support structures of pitched roofs, so raising them involves significant engineering to ensure safety and durability. This process can be complex and costly, so professional assessment is essential before undertaking a project of this magnitude.

The Goffstown, NH homeowners’ guide to addition to existing structure building services

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