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Top-Rated Addition to existing structure builders in Collins - Updated Nov 2026

Scott's Home Renewal
4.6(
177
)
Addition to Existing Structure - Build

Serving Collins, IA and surrounding areas

Approved

In business since 1994

Free estimates

Customers say: True professional

"I used Scott's Home Renewal for a first floor renovation about three years ago, was pleased and hired them again for this. Not the cheapest contractor, but definitely the best I have used here. First class professionals; first rate subs, especially the tile and glass people The custom glass door arrived with the wrong specs, and the glass contractor got the factory to make a new one with only one day of waiting.. If you want it done right, contact Scott's."
5 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for DLR Construction
DLR Construction
4.9(
16
)
Addition to Existing Structure - Build

Serving Collins, IA and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"We had them come out to quote installation of windows and ended up purchasing new doors as well. Then we had them quote new siding. They did an awesome job installing the windows we had and removing/re-installing the new entrance and screen doors. Then we had them remove existing siding, install new siding which turned out fantastic. We wanted a couple of things changed and Jose was quick to fix any issues we had or changes we made. We liked DLR enough that we are having them add to our existing deck and do some custom deck building. Jose and his crew show up when promised and will make sure you are completely satisfied with the job before moving on. Absolutely recommend DLR for most any project."
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+22

Response time2 days
Response rate99%
1 neighbors recently requested a quote
Avatar for GDI LLC
GDI LLC
4.2(
7
)
Addition to Existing Structure - Build

Serving Collins, IA and surrounding areas

Approved

In business since 2017

Free estimates

Credit card accepted

GDI 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.

Add on deck
Deck
Deck and Staining
Bathroom Remodel
Remodeling kitchen

+10

2 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for deWit Construction & Remodeling
deWit Construction & Remodeling
4.8(
26
)
Addition to Existing Structure - Build

Serving Collins, IA and surrounding areas

In business since 2008

Free estimates

Emergency services offered

"They did a good job. They were timely. I did not like that Neil kept giving me a hard time about an add on that I did not want. I already had all the materials and he was upset that they were not able to mark them up. I really liked that they offered to come right away to do the project after I had two other companies bail."
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+8

Recommended by95%of homeowners
Avatar for Addition Doctors
Addition Doctors
4.7(
22
)
Addition to Existing Structure - Build

Serving Collins, IA and surrounding areas

In business since 1985

Free estimates

"My husband and I had spent 13 years remodeling our 1873 house by ourselves. When it came time to do our dream project of adding a sunroom, finding a contractor to do the work instead of doing it ourselves was a very important decision to us. We met with several contractors and knew instantly that John and his son Nate at Addition Doctors were the people we wanted taking on this project. John and Nate were so great to work with. They were the only company we met with who gave us a computer generated model of what the project would look like so we had a very clear vision of the end product. They were the only company to quote us the project under the budget we told them we had to work with. They kept us up to date at every step of the project and there were never any surprises about cost or timing. They had great ideas for the project when we weren't exactly sure what should or could be done. We love our finished sunroom. The quality of work and service they gave was excellent. We would highly recommend Addition Doctors for anyone who is looking to have quality work done to their home."
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Need a Cabin?
Enjoy the Porch

+18

Recommended by100%of homeowners
Avatar for Daughenbaugh Construction & Restoration
Daughenbaugh Construction & Restoration
4.5(
37
)
Addition to Existing Structure - Build

Serving Collins, IA and surrounding areas

In business since 2002

Free estimates

"From the first phone call to David(Daughenbaugh Restoration owner) to the closing of our project we are so pleased with his services and his whole team. David was always there to answer questions promptly. His team was very professional and very skilled tradesman! Which now days you really have to worry about that. We would hire Daughenbaugh Restoration again without a hesitation. We are actually talking about adding a addition already and David will be doing that project for us as well!"
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+2

Recommended by90%of homeowners
Avatar for Essence Construction, LLC
Essence Construction, LLC
4.4(
52
)
Addition to Existing Structure - Build

Serving Collins, IA and surrounding areas

In business since 2000

Free estimates

"Our 100+ year old house had some very real structural problems (some of which couldnâ t be totally evaluated until some walls were opened up) but Scott was very honest when presenting what needed to be done. He was accurate on the timeline, and he and his crew showed up every day. Communication was good - we always knew at what stage the project was at, and anytime there was something unexpected that came up, we always knew about it. I felt that the pricing was more than fair and I would definitely use Essence Construction in the future."
Deck
Deck
Deck
Deck
Fence post

+968

Response time8 hrs
Response rate93%
Recommended by100%of homeowners
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FAQs for addition to existing structure building service projects in Collins, IA

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 Collins, IA 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.